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AS_CASE([$host], [wasm64-*-emscripten], [ AS_VAR_APPEND([CFLAGS], [" -sMEMORY64=1"]) AS_VAR_APPEND([LDFLAGS], [" -sMEMORY64=1"]) ], ) if test "$ac_sys_system" = "Darwin" then # Compiler selection on MacOSX is more complicated than # AC_PROG_CC can handle, see Mac/README for more # information if test -z "${CC}" then found_gcc= found_clang= as_save_IFS=$IFS; IFS=: for as_dir in $PATH do IFS=$as_save_IFS if test -x "${as_dir}/gcc"; then if test -z "${found_gcc}"; then found_gcc="${as_dir}/gcc" fi fi if test -x "${as_dir}/clang"; then if test -z "${found_clang}"; then found_clang="${as_dir}/clang" fi fi done IFS=$as_save_IFS if test -n "$found_gcc" -a -n "$found_clang" then if test -n "`"$found_gcc" --version | grep llvm-gcc`" then AC_MSG_NOTICE([Detected llvm-gcc, falling back to clang]) CC="$found_clang" CXX="$found_clang++" fi elif test -z "$found_gcc" -a -n "$found_clang" then AC_MSG_NOTICE([No GCC found, use CLANG]) CC="$found_clang" CXX="$found_clang++" elif test -z "$found_gcc" -a -z "$found_clang" then found_clang=`/usr/bin/xcrun -find clang 2>/dev/null` if test -n "${found_clang}" then AC_MSG_NOTICE([Using clang from Xcode.app]) CC="${found_clang}" CXX="`/usr/bin/xcrun -find clang++`" # else: use default behaviour fi fi fi fi AC_PROG_CC AC_PROG_CPP AC_PROG_GREP AC_PROG_SED AC_PROG_EGREP dnl detect compiler name dnl check for xlc before clang, newer xlc's can use clang as frontend. dnl check for GCC last, other compilers set __GNUC__, too. dnl msvc is listed for completeness. AC_CACHE_CHECK([for CC compiler name], [ac_cv_cc_name], [ cat > conftest.c <conftest.out 2>/dev/null; then ac_cv_cc_name=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d ' '` else ac_cv_cc_name="unknown" fi rm -f conftest.c conftest.out ]) # checks for UNIX variants that set C preprocessor variables # may set _GNU_SOURCE, __EXTENSIONS__, _POSIX_PTHREAD_SEMANTICS, # _POSIX_SOURCE, _POSIX_1_SOURCE, and more AC_USE_SYSTEM_EXTENSIONS AC_SUBST(CXX) AC_SUBST(MAINCC) AC_MSG_CHECKING(for --with-cxx-main=) AC_ARG_WITH(cxx_main, AS_HELP_STRING([--with-cxx-main@<:@=COMPILER@:>@], [compile main() and link Python executable with C++ compiler specified in COMPILER (default is $CXX)]), [ case $withval in no) with_cxx_main=no MAINCC='$(CC)';; yes) with_cxx_main=yes MAINCC='$(CXX)';; *) with_cxx_main=yes MAINCC=$withval if test -z "$CXX" then CXX=$withval fi;; esac], [ with_cxx_main=no MAINCC='$(CC)' ]) AC_MSG_RESULT($with_cxx_main) preset_cxx="$CXX" if test -z "$CXX" then case "$CC" in gcc) AC_PATH_TOOL(CXX, [g++], [g++], [notfound]) ;; cc) AC_PATH_TOOL(CXX, [c++], [c++], [notfound]) ;; clang|*/clang) AC_PATH_TOOL(CXX, [clang++], [clang++], [notfound]) ;; icc|*/icc) AC_PATH_TOOL(CXX, [icpc], [icpc], [notfound]) ;; esac if test "$CXX" = "notfound" then CXX="" fi fi if test -z "$CXX" then AC_CHECK_TOOLS(CXX, $CCC c++ g++ gcc CC cxx cc++ cl, notfound) if test "$CXX" = "notfound" then CXX="" fi fi if test "$preset_cxx" != "$CXX" then AC_MSG_NOTICE([ By default, distutils will build C++ extension modules with "$CXX". If this is not intended, then set CXX on the configure command line. ]) fi AC_MSG_CHECKING([for the platform triplet based on compiler characteristics]) cat > conftest.c <=6) && defined(_MIPSEL) # if _MIPS_SIM == _ABIO32 mipsisa32r6el-linux-gnu # elif _MIPS_SIM == _ABIN32 mipsisa64r6el-linux-gnuabin32 # elif _MIPS_SIM == _ABI64 mipsisa64r6el-linux-gnuabi64 # else # error unknown platform triplet # endif # elif defined(__mips_hard_float) && defined(__mips_isa_rev) && (__mips_isa_rev >=6) # if _MIPS_SIM == _ABIO32 mipsisa32r6-linux-gnu # elif _MIPS_SIM == _ABIN32 mipsisa64r6-linux-gnuabin32 # elif _MIPS_SIM == _ABI64 mipsisa64r6-linux-gnuabi64 # else # error unknown platform triplet # endif # elif defined(__mips_hard_float) && defined(_MIPSEL) # if _MIPS_SIM == _ABIO32 mipsel-linux-gnu # elif _MIPS_SIM == _ABIN32 mips64el-linux-gnuabin32 # elif _MIPS_SIM == _ABI64 mips64el-linux-gnuabi64 # else # error unknown platform triplet # endif # elif defined(__mips_hard_float) # if _MIPS_SIM == _ABIO32 mips-linux-gnu # elif _MIPS_SIM == _ABIN32 mips64-linux-gnuabin32 # elif _MIPS_SIM == _ABI64 mips64-linux-gnuabi64 # else # error unknown platform triplet # endif # elif defined(__or1k__) or1k-linux-gnu # elif defined(__powerpc__) && defined(__SPE__) powerpc-linux-gnuspe # elif defined(__powerpc64__) # if defined(__LITTLE_ENDIAN__) powerpc64le-linux-gnu # else powerpc64-linux-gnu # endif # elif defined(__powerpc__) powerpc-linux-gnu # elif defined(__s390x__) s390x-linux-gnu # elif defined(__s390__) s390-linux-gnu # elif defined(__sh__) && defined(__LITTLE_ENDIAN__) sh4-linux-gnu # elif defined(__sparc__) && defined(__arch64__) sparc64-linux-gnu # elif defined(__sparc__) sparc-linux-gnu # elif defined(__riscv) # if __riscv_xlen == 32 riscv32-linux-gnu # elif __riscv_xlen == 64 riscv64-linux-gnu # else # error unknown platform triplet # endif # else # error unknown platform triplet # endif #elif defined(__FreeBSD_kernel__) # if defined(__LP64__) x86_64-kfreebsd-gnu # elif defined(__i386__) i386-kfreebsd-gnu # else # error unknown platform triplet # endif #elif defined(__gnu_hurd__) i386-gnu #elif defined(__APPLE__) darwin #elif defined(__VXWORKS__) vxworks #elif defined(__wasm32__) # if defined(__EMSCRIPTEN__) wasm32-emscripten # elif defined(__wasi__) wasm32-wasi # else # error unknown wasm32 platform # endif #elif defined(__wasm64__) # if defined(__EMSCRIPTEN__) wasm64-emscripten # elif defined(__wasi__) wasm64-wasi # else # error unknown wasm64 platform # endif #else # error unknown platform triplet #endif EOF if $CPP $CPPFLAGS conftest.c >conftest.out 2>/dev/null; then PLATFORM_TRIPLET=`grep -v '^#' conftest.out | grep -v '^ *$' | tr -d ' '` case "$build_os" in linux-musl*) PLATFORM_TRIPLET=`echo "$PLATFORM_TRIPLET" | sed 's/linux-gnu/linux-musl/'` ;; esac AC_MSG_RESULT([$PLATFORM_TRIPLET]) else AC_MSG_RESULT([none]) fi rm -f conftest.c conftest.out AC_MSG_CHECKING([for multiarch]) AS_CASE([$ac_sys_system], [Darwin*], [MULTIARCH=""], [FreeBSD*], [MULTIARCH=""], [MULTIARCH=$($CC --print-multiarch 2>/dev/null)] ) AC_SUBST([MULTIARCH]) AC_MSG_RESULT([$MULTIARCH]) if test x$PLATFORM_TRIPLET != x && test x$MULTIARCH != x; then if test x$PLATFORM_TRIPLET != x$MULTIARCH; then AC_MSG_ERROR([internal configure error for the platform triplet, please file a bug report]) fi elif test x$PLATFORM_TRIPLET != x && test x$MULTIARCH = x; then MULTIARCH=$PLATFORM_TRIPLET fi AC_SUBST(PLATFORM_TRIPLET) if test x$MULTIARCH != x; then MULTIARCH_CPPFLAGS="-DMULTIARCH=\\\"$MULTIARCH\\\"" fi AC_SUBST(MULTIARCH_CPPFLAGS) dnl Support tiers according to https://peps.python.org/pep-0011/ dnl dnl NOTE: Windows support tiers are defined in PC/pyconfig.h. dnl AC_MSG_CHECKING([for PEP 11 support tier]) AS_CASE([$host/$ac_cv_cc_name], [x86_64-*-linux-gnu/gcc], [PY_SUPPORT_TIER=1], dnl Linux on AMD64, any vendor, glibc, gcc [x86_64-apple-darwin*/clang], [PY_SUPPORT_TIER=1], dnl macOS on Intel, any version [i686-pc-windows-msvc/msvc], [PY_SUPPORT_TIER=1], dnl 32bit Windows on Intel, MSVC [x86_64-pc-windows-msvc/msvc], [PY_SUPPORT_TIER=1], dnl 64bit Windows on AMD64, MSVC [aarch64-apple-darwin*/clang], [PY_SUPPORT_TIER=2], dnl macOS on M1, any version [aarch64-*-linux-gnu/gcc], [PY_SUPPORT_TIER=2], dnl Linux ARM64, glibc, gcc+clang [aarch64-*-linux-gnu/clang], [PY_SUPPORT_TIER=2], [powerpc64le-*-linux-gnu/gcc], [PY_SUPPORT_TIER=2], dnl Linux on PPC64 little endian, glibc, gcc [x86_64-*-linux-gnu/clang], [PY_SUPPORT_TIER=2], dnl Linux on AMD64, any vendor, glibc, clang [aarch64-pc-windows-msvc/msvc], [PY_SUPPORT_TIER=3], dnl Windows ARM64, MSVC [armv7l-*-linux-gnueabihf/gcc], [PY_SUPPORT_TIER=3], dnl ARMv7 LE with hardware floats, any vendor, glibc, gcc [powerpc64le-*-linux-gnu/clang], [PY_SUPPORT_TIER=3], dnl Linux on PPC64 little endian, glibc, clang [s390x-*-linux-gnu/gcc], [PY_SUPPORT_TIER=3], dnl Linux on 64bit s390x (big endian), glibc, gcc [wasm32-unknown-emscripten/clang], [PY_SUPPORT_TIER=3], dnl WebAssembly Emscripten [wasm32-unknown-wasi/clang], [PY_SUPPORT_TIER=3], dnl WebAssembly System Interface [x86_64-*-freebsd*/clang], [PY_SUPPORT_TIER=3], dnl FreeBSD on AMD64 [PY_SUPPORT_TIER=0] ) AS_CASE([$PY_SUPPORT_TIER], [1], [AC_MSG_RESULT([$host/$ac_cv_cc_name has tier 1 (supported)])], [2], [AC_MSG_RESULT([$host/$ac_cv_cc_name has tier 2 (supported)])], [3], [AC_MSG_RESULT([$host/$ac_cv_cc_name has tier 3 (partially supported)])], [AC_MSG_WARN([$host/$ac_cv_cc_name is not supported])] ) AC_DEFINE_UNQUOTED([PY_SUPPORT_TIER], [$PY_SUPPORT_TIER], [PEP 11 Support tier (1, 2, 3 or 0 for unsupported)]) AC_CACHE_CHECK([for -Wl,--no-as-needed], [ac_cv_wl_no_as_needed], [ save_LDFLAGS="$LDFLAGS" AS_VAR_APPEND([LDFLAGS], [-Wl,--no-as-needed]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])], [NO_AS_NEEDED="-Wl,--no-as-needed" ac_cv_wl_no_as_needed=yes], [NO_AS_NEEDED="" ac_cv_wl_no_as_needed=no]) LDFLAGS="$save_LDFLAGS" ]) AC_SUBST(NO_AS_NEEDED) AC_MSG_CHECKING([for the Android API level]) cat > conftest.c <conftest.out 2>/dev/null; then ANDROID_API_LEVEL=`sed -n -e '/__ANDROID_API__/d' -e 's/^android_api = //p' conftest.out` _arm_arch=`sed -n -e '/__ARM_ARCH/d' -e 's/^arm_arch = //p' conftest.out` AC_MSG_RESULT([$ANDROID_API_LEVEL]) if test -z "$ANDROID_API_LEVEL"; then AC_MSG_ERROR([Fatal: you must define __ANDROID_API__]) fi AC_DEFINE_UNQUOTED(ANDROID_API_LEVEL, $ANDROID_API_LEVEL, [The Android API level.]) AC_MSG_CHECKING([for the Android arm ABI]) AC_MSG_RESULT([$_arm_arch]) if test "$_arm_arch" = 7; then BASECFLAGS="${BASECFLAGS} -mfloat-abi=softfp -mfpu=vfpv3-d16" LDFLAGS="${LDFLAGS} -march=armv7-a -Wl,--fix-cortex-a8" fi else AC_MSG_RESULT([not Android]) fi rm -f conftest.c conftest.out # Check for unsupported systems AS_CASE([$ac_sys_system/$ac_sys_release], [atheos*|Linux*/1*], [ AC_MSG_ERROR([m4_normalize([ This system \($ac_sys_system/$ac_sys_release\) is no longer supported. See README for details. ])]) ] ) AC_MSG_CHECKING([for --with-emscripten-target]) AC_ARG_WITH([emscripten-target], [AS_HELP_STRING([--with-emscripten-target=@<:@browser|node@:>@], [Emscripten platform])], [ AS_VAR_IF([ac_sys_system], [Emscripten], [ AS_CASE([$with_emscripten_target], [browser], [ac_sys_emscripten_target=browser], [node], [ac_sys_emscripten_target=node], dnl Debug builds with source map / dwarf symbols. Py_DEBUG builds easily dnl run out of stack space. Detached sybmols and map prohibit some dnl optimizations and increase file size. Options are undocumented so we dnl are free to remove them in the future. [browser-debug], [ac_sys_emscripten_target=browser-debug], [node-debug], [ac_sys_emscripten_target=node-debug], [AC_MSG_ERROR([Invalid argument: --with-emscripten-target=browser|node])] ) ], [ AC_MSG_ERROR([--with-emscripten-target only applies to Emscripten]) ]) ], [ AS_VAR_IF([ac_sys_system], [Emscripten], [ac_sys_emscripten_target=browser]) ]) AC_MSG_RESULT([$ac_sys_emscripten_target]) dnl On Emscripten dlopen() requires -s MAIN_MODULE and -fPIC. The flags dnl disables dead code elimination and increases the size of the WASM module dnl by about 1.5 to 2MB. MAIN_MODULE defines __wasm_mutable_globals__. dnl See https://emscripten.org/docs/compiling/Dynamic-Linking.html AC_MSG_CHECKING([for --enable-wasm-dynamic-linking]) AC_ARG_ENABLE([wasm-dynamic-linking], [AS_HELP_STRING([--enable-wasm-dynamic-linking], [Enable dynamic linking support for WebAssembly (default is no)])], [ AS_CASE([$ac_sys_system], [Emscripten], [], [WASI], [AC_MSG_ERROR([WASI dynamic linking is not implemented yet.])], [AC_MSG_ERROR([--enable-wasm-dynamic-linking only applies to Emscripten and WASI])] ) ], [ enable_wasm_dynamic_linking=missing ]) AC_MSG_RESULT([$enable_wasm_dynamic_linking]) AC_MSG_CHECKING([for --enable-wasm-pthreads]) AC_ARG_ENABLE([wasm-pthreads], [AS_HELP_STRING([--enable-wasm-pthreads], [Enable pthread emulation for WebAssembly (default is no)])], [ AS_CASE([$ac_sys_system], [Emscripten], [], [WASI], [AC_MSG_ERROR([WASI threading is not implemented yet.])], [AC_MSG_ERROR([--enable-wasm-pthreads only applies to Emscripten and WASI])] ) ], [ enable_wasm_pthreads=missing ]) AC_MSG_RESULT([$enable_wasm_pthreads]) AC_MSG_CHECKING([for --with-suffix]) AC_ARG_WITH([suffix], [AS_HELP_STRING([--with-suffix=SUFFIX], [set executable suffix to SUFFIX (default is empty, yes is mapped to '.exe')])], [ AS_CASE([$with_suffix], [no], [EXEEXT=], [yes], [EXEEXT=.exe], [EXEEXT=$with_suffix] ) ], [ AS_CASE([$ac_sys_system/$ac_sys_emscripten_target], [Emscripten/browser*], [EXEEXT=.js], [Emscripten/node*], [EXEEXT=.js], [WASI/*], [EXEEXT=.wasm], [EXEEXT=] ) ]) AC_MSG_RESULT([$EXEEXT]) # Test whether we're running on a non-case-sensitive system, in which # case we give a warning if no ext is given AC_SUBST(BUILDEXEEXT) AC_MSG_CHECKING(for case-insensitive build directory) if test ! -d CaseSensitiveTestDir; then mkdir CaseSensitiveTestDir fi if test -d casesensitivetestdir && test -z "$EXEEXT" then AC_MSG_RESULT(yes) BUILDEXEEXT=.exe else AC_MSG_RESULT(no) BUILDEXEEXT=$EXEEXT fi rmdir CaseSensitiveTestDir case $ac_sys_system in hp*|HP*) case $CC in cc|*/cc) CC="$CC -Ae";; esac;; esac AC_SUBST(LIBRARY) AC_MSG_CHECKING(LIBRARY) if test -z "$LIBRARY" then LIBRARY='libpython$(VERSION)$(ABIFLAGS).a' fi AC_MSG_RESULT($LIBRARY) # LDLIBRARY is the name of the library to link against (as opposed to the # name of the library into which to insert object files). 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EXPORTSYMS= EXPORTSFROM= AC_SUBST(EXPORTSYMS) AC_SUBST(EXPORTSFROM) AC_MSG_CHECKING(EXPORTSYMS) case $ac_sys_system in AIX*) EXPORTSYMS="Modules/python.exp" EXPORTSFROM=. # the main executable ;; esac AC_MSG_RESULT($EXPORTSYMS) # GNULD is set to "yes" if the GNU linker is used. If this goes wrong # make sure we default having it set to "no": this is used by # distutils.unixccompiler to know if it should add --enable-new-dtags # to linker command lines, and failing to detect GNU ld simply results # in the same behaviour as before. 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LDLIBRARY is the dynamic # library that we build, but we do not want to link against it (we # will find it with a -framework option). For this reason there is an # extra variable BLDLIBRARY against which Python and the extension # modules are linked, BLDLIBRARY. This is normally the same as # LDLIBRARY, but empty for MacOSX framework builds. if test "$enable_framework" then LDLIBRARY='$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)' RUNSHARED=DYLD_FRAMEWORK_PATH=`pwd`${DYLD_FRAMEWORK_PATH:+:${DYLD_FRAMEWORK_PATH}} BLDLIBRARY='' else BLDLIBRARY='$(LDLIBRARY)' fi # Other platforms follow if test $enable_shared = "yes"; then PY_ENABLE_SHARED=1 AC_DEFINE(Py_ENABLE_SHARED, 1, [Defined if Python is built as a shared library.]) case $ac_sys_system in CYGWIN*) LDLIBRARY='libpython$(LDVERSION).dll.a' DLLLIBRARY='libpython$(LDVERSION).dll' ;; SunOS*) LDLIBRARY='libpython$(LDVERSION).so' BLDLIBRARY='-Wl,-R,$(LIBDIR) -L. -lpython$(LDVERSION)' RUNSHARED=LD_LIBRARY_PATH=`pwd`${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}} INSTSONAME="$LDLIBRARY".$SOVERSION if test "$with_pydebug" != yes then PY3LIBRARY=libpython3.so fi ;; Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*|OpenBSD*|VxWorks*) LDLIBRARY='libpython$(LDVERSION).so' BLDLIBRARY='-L. -lpython$(LDVERSION)' RUNSHARED=LD_LIBRARY_PATH=`pwd`${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}} INSTSONAME="$LDLIBRARY".$SOVERSION if test "$with_pydebug" != yes then PY3LIBRARY=libpython3.so fi ;; hp*|HP*) case `uname -m` in ia64) LDLIBRARY='libpython$(LDVERSION).so' ;; *) LDLIBRARY='libpython$(LDVERSION).sl' ;; esac BLDLIBRARY='-Wl,+b,$(LIBDIR) -L. -lpython$(LDVERSION)' RUNSHARED=SHLIB_PATH=`pwd`${SHLIB_PATH:+:${SHLIB_PATH}} ;; Darwin*) LDLIBRARY='libpython$(LDVERSION).dylib' BLDLIBRARY='-L. -lpython$(LDVERSION)' RUNSHARED=DYLD_LIBRARY_PATH=`pwd`${DYLD_LIBRARY_PATH:+:${DYLD_LIBRARY_PATH}} ;; AIX*) LDLIBRARY='libpython$(LDVERSION).so' RUNSHARED=LIBPATH=`pwd`${LIBPATH:+:${LIBPATH}} ;; esac else # shared is disabled PY_ENABLE_SHARED=0 case $ac_sys_system in CYGWIN*) BLDLIBRARY='$(LIBRARY)' LDLIBRARY='libpython$(LDVERSION).dll.a' ;; esac fi if test "$cross_compiling" = yes; then RUNSHARED= fi AC_ARG_VAR([HOSTRUNNER], [Program to run CPython for the host platform]) if test -z "$HOSTRUNNER" then AS_CASE([$ac_sys_system/$ac_sys_emscripten_target], [Emscripten/node*], [ AC_PATH_TOOL([NODE], [node], [node]) HOSTRUNNER="$NODE" # bigint for ctypes c_longlong, c_longdouble # no longer available in Node 16 AC_CACHE_CHECK([for node --experimental-wasm-bigint], [ac_cv_tool_node_wasm_bigint], [ if $NODE -v --experimental-wasm-bigint > /dev/null 2>&1; then ac_cv_tool_node_wasm_bigint=yes else ac_cv_tool_node_wasm_bigint=no fi ]) AS_VAR_IF([ac_cv_tool_node_wasm_bigint], [yes], [ AS_VAR_APPEND([HOSTRUNNER], [" --experimental-wasm-bigint"]) ]) AS_VAR_IF([enable_wasm_pthreads], [yes], [ AS_VAR_APPEND([HOSTRUNNER], [" --experimental-wasm-threads"]) # no longer available in Node 16 AC_CACHE_CHECK([for node --experimental-wasm-bulk-memory], [ac_cv_tool_node_wasm_bulk_memory], [ if $NODE -v --experimental-wasm-bulk-memory > /dev/null 2>&1; then ac_cv_tool_node_wasm_bulk_memory=yes else ac_cv_tool_node_wasm_bulk_memory=no fi ]) AS_VAR_IF([ac_cv_tool_node_wasm_bulk_memory], [yes], [ AS_VAR_APPEND([HOSTRUNNER], [" --experimental-wasm-bulk-memory"]) ]) ]) AS_VAR_IF([host_cpu], [wasm64], [AS_VAR_APPEND([HOSTRUNNER], [" --experimental-wasm-memory64"])]) ], dnl TODO: support other WASI runtimes dnl wasmtime starts the proces with "/" as CWD. For OOT builds add the dnl directory containing _sysconfigdata to PYTHONPATH. [WASI/*], [HOSTRUNNER='wasmtime run --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt) --mapdir /::$(srcdir) --'], [HOSTRUNNER=''] ) fi AC_SUBST([HOSTRUNNER]) AC_MSG_CHECKING([HOSTRUNNER]) AC_MSG_RESULT([$HOSTRUNNER]) if test -n "$HOSTRUNNER"; then dnl Pass hostrunner variable as env var in order to expand shell expressions. PYTHON_FOR_BUILD="_PYTHON_HOSTRUNNER='$HOSTRUNNER' $PYTHON_FOR_BUILD" fi AC_MSG_RESULT($LDLIBRARY) # LIBRARY_DEPS, LINK_PYTHON_OBJS and LINK_PYTHON_DEPS variable AS_CASE([$ac_sys_system/$ac_sys_emscripten_target], [Emscripten/browser*], [LIBRARY_DEPS='$(PY3LIBRARY) $(WASM_STDLIB) python.html python.worker.js'], [LIBRARY_DEPS='$(PY3LIBRARY) $(EXPORTSYMS)'] ) LINK_PYTHON_DEPS='$(LIBRARY_DEPS)' if test "$PY_ENABLE_SHARED" = 1 || test "$enable_framework" ; then LIBRARY_DEPS="\$(LDLIBRARY) $LIBRARY_DEPS" if test "$STATIC_LIBPYTHON" = 1; then LIBRARY_DEPS="\$(LIBRARY) $LIBRARY_DEPS" fi # Link Python program to the shared library LINK_PYTHON_OBJS='$(BLDLIBRARY)' else if test "$STATIC_LIBPYTHON" = 0; then # Build Python needs object files but don't need to build # Python static library LINK_PYTHON_DEPS="$LIBRARY_DEPS \$(LIBRARY_OBJS)" fi LIBRARY_DEPS="\$(LIBRARY) $LIBRARY_DEPS" # Link Python program to object files LINK_PYTHON_OBJS='$(LIBRARY_OBJS)' fi AC_SUBST(LIBRARY_DEPS) AC_SUBST(LINK_PYTHON_DEPS) AC_SUBST(LINK_PYTHON_OBJS) # ar program AC_SUBST(AR) AC_CHECK_TOOLS(AR, ar aal, ar) # tweak ARFLAGS only if the user didn't set it on the command line AC_SUBST(ARFLAGS) if test -z "$ARFLAGS" then ARFLAGS="rcs" fi AC_CHECK_TOOLS([READELF], [readelf], [:]) if test "$cross_compiling" = yes; then case "$READELF" in readelf|:) AC_MSG_ERROR([readelf for the host is required for cross builds]) ;; esac fi AC_SUBST(READELF) case $MACHDEP in hp*|HP*) # install -d does not work on HP-UX if test -z "$INSTALL" then INSTALL="${srcdir}/install-sh -c" fi esac AC_PROG_INSTALL AC_PROG_MKDIR_P # Not every filesystem supports hard links AC_SUBST(LN) if test -z "$LN" ; then case $ac_sys_system in CYGWIN*) LN="ln -s";; *) LN=ln;; esac fi # For calculating the .so ABI tag. AC_SUBST(ABIFLAGS) ABIFLAGS="" # Check for --with-pydebug AC_MSG_CHECKING(for --with-pydebug) AC_ARG_WITH(pydebug, AS_HELP_STRING([--with-pydebug], [build with Py_DEBUG defined (default is no)]), [ if test "$withval" != no then AC_DEFINE(Py_DEBUG, 1, [Define if you want to build an interpreter with many run-time checks.]) AC_MSG_RESULT(yes); Py_DEBUG='true' ABIFLAGS="${ABIFLAGS}d" else AC_MSG_RESULT(no); Py_DEBUG='false' fi], [AC_MSG_RESULT(no)]) # Check for --with-trace-refs # --with-trace-refs AC_MSG_CHECKING(for --with-trace-refs) AC_ARG_WITH(trace-refs, AS_HELP_STRING( [--with-trace-refs], [enable tracing references for debugging purpose (default is no)]),, with_trace_refs=no) AC_MSG_RESULT($with_trace_refs) if test "$with_trace_refs" = "yes" then AC_DEFINE(Py_TRACE_REFS, 1, [Define if you want to enable tracing references for debugging purpose]) fi # Check for --enable-pystats AC_MSG_CHECKING([for --enable-pystats]) AC_ARG_ENABLE([pystats], [AS_HELP_STRING( [--enable-pystats], [enable internal statistics gathering (default is no)])],, [enable_pystats=no] ) AC_MSG_RESULT([$enable_pystats]) AS_VAR_IF([enable_pystats], [yes], [ AC_DEFINE([Py_STATS], [1], [Define if you want to enable internal statistics gathering.]) ]) # Check for --with-assertions. # This allows enabling assertions without Py_DEBUG. assertions='false' AC_MSG_CHECKING(for --with-assertions) AC_ARG_WITH(assertions, AS_HELP_STRING([--with-assertions],[build with C assertions enabled (default is no)]), [ if test "$withval" != no then assertions='true' fi], []) if test "$assertions" = 'true'; then AC_MSG_RESULT(yes) elif test "$Py_DEBUG" = 'true'; then assertions='true' AC_MSG_RESULT(implied by --with-pydebug) else AC_MSG_RESULT(no) fi # Enable optimization flags AC_SUBST(DEF_MAKE_ALL_RULE) AC_SUBST(DEF_MAKE_RULE) Py_OPT='false' AC_MSG_CHECKING(for --enable-optimizations) AC_ARG_ENABLE(optimizations, AS_HELP_STRING( [--enable-optimizations], [enable expensive, stable optimizations (PGO, etc.) (default is no)]), [ if test "$enableval" != no then Py_OPT='true' AC_MSG_RESULT(yes); else Py_OPT='false' AC_MSG_RESULT(no); fi], [AC_MSG_RESULT(no)]) if test "$Py_OPT" = 'true' ; then # Intentionally not forcing Py_LTO='true' here. Too many toolchains do not # compile working code using it and both test_distutils and test_gdb are # broken when you do manage to get a toolchain that works with it. People # who want LTO need to use --with-lto themselves. DEF_MAKE_ALL_RULE="profile-opt" REQUIRE_PGO="yes" DEF_MAKE_RULE="build_all" case $CC in *gcc*) AX_CHECK_COMPILE_FLAG([-fno-semantic-interposition],[ CFLAGS_NODIST="$CFLAGS_NODIST -fno-semantic-interposition" LDFLAGS_NODIST="$LDFLAGS_NODIST -fno-semantic-interposition" ]) ;; esac elif test "$ac_sys_system" = "Emscripten" -o "$ac_sys_system" = "WASI"; then dnl Emscripten does not support shared extensions yet. Build dnl "python.[js,wasm]", "pybuilddir.txt", and "platform" files. DEF_MAKE_ALL_RULE="build_wasm" REQUIRE_PGO="no" DEF_MAKE_RULE="all" else DEF_MAKE_ALL_RULE="build_all" REQUIRE_PGO="no" DEF_MAKE_RULE="all" fi AC_ARG_VAR(PROFILE_TASK, Python args for PGO generation task) AC_MSG_CHECKING(PROFILE_TASK) if test -z "$PROFILE_TASK" then PROFILE_TASK='-m test --pgo --timeout=$(TESTTIMEOUT)' fi AC_MSG_RESULT($PROFILE_TASK) # Make llvm-related checks work on systems where llvm tools are not installed with their # normal names in the default $PATH (ie: Ubuntu). They exist under the # non-suffixed name in their versioned llvm directory. llvm_bin_dir='' llvm_path="${PATH}" if test "${CC}" = "clang" then clang_bin=`which clang` # Some systems install clang elsewhere as a symlink to the real path # which is where the related llvm tools are located. if test -L "${clang_bin}" then clang_dir=`dirname "${clang_bin}"` clang_bin=`readlink "${clang_bin}"` llvm_bin_dir="${clang_dir}/"`dirname "${clang_bin}"` llvm_path="${llvm_path}${PATH_SEPARATOR}${llvm_bin_dir}" fi fi # Enable LTO flags AC_MSG_CHECKING(for --with-lto) AC_ARG_WITH(lto, AS_HELP_STRING([--with-lto=@<:@full|thin|no|yes@:>@], [enable Link-Time-Optimization in any build (default is no)]), [ case "$withval" in full) Py_LTO='true' Py_LTO_POLICY='full' AC_MSG_RESULT(yes) ;; thin) Py_LTO='true' Py_LTO_POLICY='thin' AC_MSG_RESULT(yes) ;; yes) Py_LTO='true' Py_LTO_POLICY='default' AC_MSG_RESULT(yes) ;; no) Py_LTO='false' AC_MSG_RESULT(no) ;; *) Py_LTO='false' AC_MSG_ERROR([unknown lto option: '$withval']) ;; esac ], [AC_MSG_RESULT(no)]) if test "$Py_LTO" = 'true' ; then case $CC in *clang*) LDFLAGS_NOLTO="-fno-lto" dnl Clang linker requires -flto in order to link objects with LTO information. dnl Thin LTO is faster and works for object files with full LTO information, too. AX_CHECK_COMPILE_FLAG([-flto=thin],[LDFLAGS_NOLTO="-flto=thin"],[LDFLAGS_NOLTO="-flto"]) AC_SUBST(LLVM_AR) AC_PATH_TOOL(LLVM_AR, llvm-ar, '', ${llvm_path}) AC_SUBST(LLVM_AR_FOUND) if test -n "${LLVM_AR}" -a -x "${LLVM_AR}" then LLVM_AR_FOUND="found" else LLVM_AR_FOUND="not-found" fi if test "$ac_sys_system" = "Darwin" -a "${LLVM_AR_FOUND}" = "not-found" then # The Apple-supplied ar in Xcode or the Command Line Tools is apparently sufficient found_llvm_ar=`/usr/bin/xcrun -find ar 2>/dev/null` if test -n "${found_llvm_ar}" then LLVM_AR='/usr/bin/xcrun ar' LLVM_AR_FOUND=found AC_MSG_NOTICE([llvm-ar found via xcrun: ${LLVM_AR}]) fi fi if test $LLVM_AR_FOUND = not-found then LLVM_PROFR_ERR=yes AC_MSG_ERROR([llvm-ar is required for a --with-lto build with clang but could not be found.]) else LLVM_AR_ERR=no fi AR="${LLVM_AR}" case $ac_sys_system in Darwin*) # Any changes made here should be reflected in the GCC+Darwin case below if test $Py_LTO_POLICY = default then LTOFLAGS="-flto -Wl,-export_dynamic" LTOCFLAGS="-flto" else LTOFLAGS="-flto=${Py_LTO_POLICY} -Wl,-export_dynamic" LTOCFLAGS="-flto=${Py_LTO_POLICY}" fi ;; *) if test $Py_LTO_POLICY = default then LTOFLAGS="-flto" else LTOFLAGS="-flto=${Py_LTO_POLICY}" fi ;; esac ;; *emcc*) if test "$Py_LTO_POLICY" != "default"; then AC_MSG_ERROR([emcc supports only default lto.]) fi LTOFLAGS="-flto" LTOCFLAGS="-flto" ;; *gcc*) if test $Py_LTO_POLICY = thin then AC_MSG_ERROR([thin lto is not supported under gcc compiler.]) fi dnl flag to disable lto during linking LDFLAGS_NOLTO="-fno-lto" case $ac_sys_system in Darwin*) LTOFLAGS="-flto -Wl,-export_dynamic" LTOCFLAGS="-flto" ;; *) LTOFLAGS="-flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none" ;; esac ;; esac if test "$ac_cv_prog_cc_g" = "yes" then # bpo-30345: Add -g to LDFLAGS when compiling with LTO # to get debug symbols. LTOFLAGS="$LTOFLAGS -g" fi CFLAGS_NODIST="$CFLAGS_NODIST ${LTOCFLAGS-$LTOFLAGS}" LDFLAGS_NODIST="$LDFLAGS_NODIST $LTOFLAGS" fi # Enable PGO flags. AC_SUBST(PGO_PROF_GEN_FLAG) AC_SUBST(PGO_PROF_USE_FLAG) AC_SUBST(LLVM_PROF_MERGER) AC_SUBST(LLVM_PROF_FILE) AC_SUBST(LLVM_PROF_ERR) AC_SUBST(LLVM_PROFDATA) AC_PATH_TOOL(LLVM_PROFDATA, llvm-profdata, '', ${llvm_path}) AC_SUBST(LLVM_PROF_FOUND) if test -n "${LLVM_PROFDATA}" -a -x "${LLVM_PROFDATA}" then LLVM_PROF_FOUND="found" else LLVM_PROF_FOUND="not-found" fi if test "$ac_sys_system" = "Darwin" -a "${LLVM_PROF_FOUND}" = "not-found" then found_llvm_profdata=`/usr/bin/xcrun -find llvm-profdata 2>/dev/null` if test -n "${found_llvm_profdata}" then # llvm-profdata isn't directly in $PATH in some cases. # https://apple.stackexchange.com/questions/197053/ LLVM_PROFDATA='/usr/bin/xcrun llvm-profdata' LLVM_PROF_FOUND=found AC_MSG_NOTICE([llvm-profdata found via xcrun: ${LLVM_PROFDATA}]) fi fi LLVM_PROF_ERR=no case $CC in *clang*) # Any changes made here should be reflected in the GCC+Darwin case below PGO_PROF_GEN_FLAG="-fprofile-instr-generate" PGO_PROF_USE_FLAG="-fprofile-instr-use=code.profclangd" LLVM_PROF_MERGER="${LLVM_PROFDATA} merge -output=code.profclangd *.profclangr" LLVM_PROF_FILE="LLVM_PROFILE_FILE=\"code-%p.profclangr\"" if test $LLVM_PROF_FOUND = not-found then LLVM_PROF_ERR=yes if test "${REQUIRE_PGO}" = "yes" then AC_MSG_ERROR([llvm-profdata is required for a --enable-optimizations build but could not be found.]) fi fi ;; *gcc*) case $ac_sys_system in Darwin*) PGO_PROF_GEN_FLAG="-fprofile-instr-generate" PGO_PROF_USE_FLAG="-fprofile-instr-use=code.profclangd" LLVM_PROF_MERGER="${LLVM_PROFDATA} merge -output=code.profclangd *.profclangr" LLVM_PROF_FILE="LLVM_PROFILE_FILE=\"code-%p.profclangr\"" if test "${LLVM_PROF_FOUND}" = "not-found" then LLVM_PROF_ERR=yes if test "${REQUIRE_PGO}" = "yes" then AC_MSG_ERROR([llvm-profdata is required for a --enable-optimizations build but could not be found.]) fi fi ;; *) PGO_PROF_GEN_FLAG="-fprofile-generate" PGO_PROF_USE_FLAG="-fprofile-use -fprofile-correction" LLVM_PROF_MERGER="true" LLVM_PROF_FILE="" ;; esac ;; *icc*) PGO_PROF_GEN_FLAG="-prof-gen" PGO_PROF_USE_FLAG="-prof-use" LLVM_PROF_MERGER="true" LLVM_PROF_FILE="" ;; esac # XXX Shouldn't the code above that fiddles with BASECFLAGS and OPT be # merged with this chunk of code? # Optimizer/debugger flags # ------------------------ # (The following bit of code is complicated enough - please keep things # indented properly. Just pretend you're editing Python code. ;-) # There are two parallel sets of case statements below, one that checks to # see if OPT was set and one that does BASECFLAGS setting based upon # compiler and platform. BASECFLAGS tweaks need to be made even if the # user set OPT. case $CC in *clang*) cc_is_clang=1 ;; *) if $CC --version 2>&1 | grep -q clang then cc_is_clang=1 else cc_is_clang= fi esac # Check if CC supports -Og optimization level _SAVE_VAR([CFLAGS]) CFLAGS="-Og" AC_CACHE_CHECK([if $CC supports -Og optimization level], [ac_cv_cc_supports_og], AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_cc_supports_og=yes ],[ ac_cv_cc_supports_og=no ]) ) _RESTORE_VAR([CFLAGS]) # Optimization messes up debuggers, so turn it off for # debug builds. PYDEBUG_CFLAGS="-O0" AS_VAR_IF([ac_cv_cc_supports_og], [yes], [PYDEBUG_CFLAGS="-Og"]) # tweak OPT based on compiler and platform, only if the user didn't set # it on the command line AC_SUBST(OPT) AC_SUBST(CFLAGS_ALIASING) if test "${OPT-unset}" = "unset" then case $GCC in yes) # For gcc 4.x we need to use -fwrapv so lets check if its supported if "$CC" -v --help 2>/dev/null |grep -- -fwrapv > /dev/null; then WRAP="-fwrapv" fi if test -n "${cc_is_clang}" then # Clang also needs -fwrapv WRAP="-fwrapv" # bpo-30104: disable strict aliasing to compile correctly dtoa.c, # see Makefile.pre.in for more information CFLAGS_ALIASING="-fno-strict-aliasing" fi case $ac_cv_prog_cc_g in yes) if test "$Py_DEBUG" = 'true' ; then OPT="-g $PYDEBUG_CFLAGS -Wall" else OPT="-g $WRAP -O3 -Wall" fi ;; *) OPT="-O3 -Wall" ;; esac case $ac_sys_system in SCO_SV*) OPT="$OPT -m486 -DSCO5" ;; esac ;; *) OPT="-O" ;; esac fi # WASM flags AS_CASE([$ac_sys_system], [Emscripten], [ dnl build with WASM debug info if either Py_DEBUG is set or the target is dnl node-debug or browser-debug. AS_VAR_IF([Py_DEBUG], [yes], [wasm_debug=yes], [wasm_debug=no]) dnl Start with 20 MB and allow to grow AS_VAR_APPEND([LDFLAGS_NODIST], [" -sALLOW_MEMORY_GROWTH -sTOTAL_MEMORY=20971520"]) dnl map int64_t and uint64_t to JS bigint AS_VAR_APPEND([LDFLAGS_NODIST], [" -sWASM_BIGINT"]) dnl Include file system support AS_VAR_APPEND([LDFLAGS_NODIST], [" -sFORCE_FILESYSTEM -lidbfs.js -lnodefs.js -lproxyfs.js -lworkerfs.js"]) AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [ AS_VAR_APPEND([LINKFORSHARED], [" -sMAIN_MODULE"]) ]) AS_VAR_IF([enable_wasm_pthreads], [yes], [ AS_VAR_APPEND([CFLAGS_NODIST], [" -pthread"]) AS_VAR_APPEND([LDFLAGS_NODIST], [" -sUSE_PTHREADS"]) AS_VAR_APPEND([LINKFORSHARED], [" -sPROXY_TO_PTHREAD"]) ]) AS_CASE([$ac_sys_emscripten_target], [browser*], [ AS_VAR_IF([ac_sys_emscripten_target], [browser-debug], [wasm_debug=yes]) AS_VAR_APPEND([LINKFORSHARED], [" --preload-file=\$(WASM_ASSETS_DIR)"]) WASM_ASSETS_DIR=".\$(prefix)" WASM_STDLIB="\$(WASM_ASSETS_DIR)/local/lib/python\$(VERSION)/os.py" dnl separate-dwarf does not seem to work in Chrome DevTools Support. WASM_LINKFORSHARED_DEBUG="-gsource-map --emit-symbol-map" ], [node*], [ AS_VAR_IF([ac_sys_emscripten_target], [node-debug], [wasm_debug=yes]) AS_VAR_APPEND([LDFLAGS_NODIST], [" -sALLOW_MEMORY_GROWTH -sNODERAWFS"]) AS_VAR_APPEND([LINKFORSHARED], [" -sEXIT_RUNTIME"]) WASM_LINKFORSHARED_DEBUG="-gseparate-dwarf --emit-symbol-map" ] ) AS_VAR_IF([wasm_debug], [yes], [ AS_VAR_APPEND([LDFLAGS_NODIST], [" -sASSERTIONS"]) AS_VAR_APPEND([LINKFORSHARED], [" $WASM_LINKFORSHARED_DEBUG"]) ], [ AS_VAR_APPEND([LINKFORSHARED], [" -O2 -g0"]) ]) ], [WASI], [ AC_DEFINE([_WASI_EMULATED_SIGNAL], [1], [Define to 1 if you want to emulate signals on WASI]) AC_DEFINE([_WASI_EMULATED_GETPID], [1], [Define to 1 if you want to emulate getpid() on WASI]) AC_DEFINE([_WASI_EMULATED_PROCESS_CLOCKS], [1], [Define to 1 if you want to emulate process clocks on WASI]) LIBS="$LIBS -lwasi-emulated-signal -lwasi-emulated-getpid -lwasi-emulated-process-clocks" echo "#define _WASI_EMULATED_SIGNAL 1" >> confdefs.h dnl increase initial memory and stack size, move stack first dnl https://github.com/WebAssembly/wasi-libc/issues/233 AS_VAR_APPEND([LDFLAGS_NODIST], [" -z stack-size=524288 -Wl,--stack-first -Wl,--initial-memory=10485760"]) ] ) AS_CASE([$enable_wasm_dynamic_linking], [yes], [ac_cv_func_dlopen=yes], [no], [ac_cv_func_dlopen=no], [missing], [] ) AC_SUBST(BASECFLAGS) AC_SUBST(CFLAGS_NODIST) AC_SUBST(LDFLAGS_NODIST) AC_SUBST(LDFLAGS_NOLTO) AC_SUBST([WASM_ASSETS_DIR]) AC_SUBST([WASM_STDLIB]) # The -arch flags for universal builds on macOS UNIVERSAL_ARCH_FLAGS= AC_SUBST(UNIVERSAL_ARCH_FLAGS) dnl PY_CHECK_CC_WARNING(ENABLE, WARNING, [MSG]) AC_DEFUN([PY_CHECK_CC_WARNING], [ AS_VAR_PUSHDEF([py_var], [ac_cv_$1_]m4_normalize($2)[_warning]) AC_CACHE_CHECK(m4_ifblank([$3], [if we can $1 $CC $2 warning], [$3]), [py_var], [ AS_VAR_COPY([py_cflags], [CFLAGS]) AS_VAR_APPEND([CFLAGS], ["-W$2 -Werror"]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], [AS_VAR_SET([py_var], [yes])], [AS_VAR_SET([py_var], [no])]) AS_VAR_COPY([CFLAGS], [py_cflags]) ]) AS_VAR_POPDEF([py_var]) ]) # tweak BASECFLAGS based on compiler and platform case $GCC in yes) CFLAGS_NODIST="$CFLAGS_NODIST -std=c11" PY_CHECK_CC_WARNING([enable], [extra], [if we can add -Wextra]) AS_VAR_IF([ac_cv_enable_extra_warning], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -Wextra"]) # Python doesn't violate C99 aliasing rules, but older versions of # GCC produce warnings for legal Python code. Enable # -fno-strict-aliasing on versions of GCC that support but produce # warnings. See Issue3326 ac_save_cc="$CC" CC="$CC -fno-strict-aliasing" save_CFLAGS="$CFLAGS" AC_CACHE_CHECK([whether $CC accepts and needs -fno-strict-aliasing], [ac_cv_no_strict_aliasing], AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ CC="$ac_save_cc -fstrict-aliasing" CFLAGS="$CFLAGS -Werror -Wstrict-aliasing" AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[void f(int **x) {}]], [[double *x; f((int **) &x);]]) ],[ ac_cv_no_strict_aliasing=no ],[ ac_cv_no_strict_aliasing=yes ]) ],[ ac_cv_no_strict_aliasing=no ])) CFLAGS="$save_CFLAGS" CC="$ac_save_cc" AS_VAR_IF([ac_cv_no_strict_aliasing], [yes], [BASECFLAGS="$BASECFLAGS -fno-strict-aliasing"]) # ICC doesn't recognize the option, but only emits a warning ## XXX does it emit an unused result warning and can it be disabled? AS_CASE([$CC], [*icc*], [ac_cv_disable_unused_result_warning=no] [PY_CHECK_CC_WARNING([disable], [unused-result])]) AS_VAR_IF([ac_cv_disable_unused_result_warning], [yes], [BASECFLAGS="$BASECFLAGS -Wno-unused-result" CFLAGS_NODIST="$CFLAGS_NODIST -Wno-unused-result"]) PY_CHECK_CC_WARNING([disable], [unused-parameter]) AS_VAR_IF([ac_cv_disable_unused_parameter_warning], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -Wno-unused-parameter"]) PY_CHECK_CC_WARNING([disable], [int-conversion]) AS_VAR_IF([ac_cv_disable_int_conversion], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -Wno-int-conversion"]) PY_CHECK_CC_WARNING([disable], [missing-field-initializers]) AS_VAR_IF([ac_cv_disable_missing_field_initializers_warning], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -Wno-missing-field-initializers"]) PY_CHECK_CC_WARNING([enable], [sign-compare]) AS_VAR_IF([ac_cv_enable_sign_compare_warning], [yes], [BASECFLAGS="$BASECFLAGS -Wsign-compare"]) PY_CHECK_CC_WARNING([enable], [unreachable-code]) # Don't enable unreachable code warning in debug mode, since it usually # results in non-standard code paths. # Issue #24324: Unfortunately, the unreachable code warning does not work # correctly on gcc and has been silently removed from the compiler. # It is supported on clang but on OS X systems gcc may be an alias # for clang. Try to determine if the compiler is not really gcc and, # if so, only then enable the warning. if test $ac_cv_enable_unreachable_code_warning = yes && \ test "$Py_DEBUG" != "true" && \ test -z "`$CC --version 2>/dev/null | grep 'Free Software Foundation'`" then BASECFLAGS="$BASECFLAGS -Wunreachable-code" else ac_cv_enable_unreachable_code_warning=no fi PY_CHECK_CC_WARNING([enable], [strict-prototypes]) AS_VAR_IF([ac_cv_enable_strict_prototypes_warning], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -Wstrict-prototypes"]) ac_save_cc="$CC" CC="$CC -Werror=implicit-function-declaration" AC_CACHE_CHECK([if we can make implicit function declaration an error in $CC], [ac_cv_enable_implicit_function_declaration_error], AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_implicit_function_declaration_error=yes ],[ ac_cv_enable_implicit_function_declaration_error=no ])) CC="$ac_save_cc" AS_VAR_IF([ac_cv_enable_implicit_function_declaration_error], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -Werror=implicit-function-declaration"]) ac_save_cc="$CC" CC="$CC -fvisibility=hidden" AC_CACHE_CHECK([if we can use visibility in $CC], [ac_cv_enable_visibility], AC_COMPILE_IFELSE( [ AC_LANG_PROGRAM([[]], [[]]) ],[ ac_cv_enable_visibility=yes ],[ ac_cv_enable_visibility=no ])) CC="$ac_save_cc" AS_VAR_IF([ac_cv_enable_visibility], [yes], [CFLAGS_NODIST="$CFLAGS_NODIST -fvisibility=hidden"]) # if using gcc on alpha, use -mieee to get (near) full IEEE 754 # support. Without this, treatment of subnormals doesn't follow # the standard. case $host in alpha*) BASECFLAGS="$BASECFLAGS -mieee" ;; esac case $ac_sys_system in SCO_SV*) BASECFLAGS="$BASECFLAGS -m486 -DSCO5" ;; Darwin*) # -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd # used to be here, but non-Apple gcc doesn't accept them. if test "${CC}" = gcc then AC_MSG_CHECKING(which compiler should be used) case "${UNIVERSALSDK}" in */MacOSX10.4u.sdk) # Build using 10.4 SDK, force usage of gcc when the # compiler is gcc, otherwise the user will get very # confusing error messages when building on OSX 10.6 CC=gcc-4.0 CPP=cpp-4.0 ;; esac AC_MSG_RESULT($CC) fi LIPO_INTEL64_FLAGS="" if test "${enable_universalsdk}" then case "$UNIVERSAL_ARCHS" in 32-bit) UNIVERSAL_ARCH_FLAGS="-arch ppc -arch i386" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="" ;; 64-bit) UNIVERSAL_ARCH_FLAGS="-arch ppc64 -arch x86_64" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="true" ;; all) UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch ppc64 -arch x86_64" LIPO_32BIT_FLAGS="-extract ppc7400 -extract i386" ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc" ;; universal2) UNIVERSAL_ARCH_FLAGS="-arch arm64 -arch x86_64" LIPO_32BIT_FLAGS="" LIPO_INTEL64_FLAGS="-extract x86_64" ARCH_RUN_32BIT="true" ;; intel) UNIVERSAL_ARCH_FLAGS="-arch i386 -arch x86_64" LIPO_32BIT_FLAGS="-extract i386" ARCH_RUN_32BIT="/usr/bin/arch -i386" ;; intel-32) UNIVERSAL_ARCH_FLAGS="-arch i386" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="" ;; intel-64) UNIVERSAL_ARCH_FLAGS="-arch x86_64" LIPO_32BIT_FLAGS="" ARCH_RUN_32BIT="true" ;; 3-way) UNIVERSAL_ARCH_FLAGS="-arch i386 -arch ppc -arch x86_64" LIPO_32BIT_FLAGS="-extract ppc7400 -extract i386" ARCH_RUN_32BIT="/usr/bin/arch -i386 -ppc" ;; *) AC_MSG_ERROR([proper usage is --with-universal-arch=universal2|32-bit|64-bit|all|intel|3-way]) ;; esac if test "${UNIVERSALSDK}" != "/" then CFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${CFLAGS}" LDFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${LDFLAGS}" CPPFLAGS="-isysroot ${UNIVERSALSDK} ${CPPFLAGS}" else CFLAGS="${UNIVERSAL_ARCH_FLAGS} ${CFLAGS}" LDFLAGS="${UNIVERSAL_ARCH_FLAGS} ${LDFLAGS}" fi fi # Calculate an appropriate deployment target for this build: # The deployment target value is used explicitly to enable certain # features are enabled (such as builtin libedit support for readline) # through the use of Apple's Availability Macros and is used as a # component of the string returned by distutils.get_platform(). # # Use the value from: # 1. the MACOSX_DEPLOYMENT_TARGET environment variable if specified # 2. the operating system version of the build machine if >= 10.6 # 3. If running on OS X 10.3 through 10.5, use the legacy tests # below to pick either 10.3, 10.4, or 10.5 as the target. # 4. If we are running on OS X 10.2 or earlier, good luck! AC_MSG_CHECKING(which MACOSX_DEPLOYMENT_TARGET to use) cur_target_major=`sw_vers -productVersion | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'` cur_target_minor=`sw_vers -productVersion | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'` cur_target="${cur_target_major}.${cur_target_minor}" if test ${cur_target_major} -eq 10 && \ test ${cur_target_minor} -ge 3 && \ test ${cur_target_minor} -le 5 then # OS X 10.3 through 10.5 cur_target=10.3 if test ${enable_universalsdk} then case "$UNIVERSAL_ARCHS" in all|3-way|intel|64-bit) # These configurations were first supported in 10.5 cur_target='10.5' ;; esac else if test `/usr/bin/arch` = "i386" then # 10.4 was the first release to support Intel archs cur_target="10.4" fi fi fi CONFIGURE_MACOSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET-${cur_target}} # Make sure that MACOSX_DEPLOYMENT_TARGET is set in the # environment with a value that is the same as what we'll use # in the Makefile to ensure that we'll get the same compiler # environment during configure and build time. MACOSX_DEPLOYMENT_TARGET="$CONFIGURE_MACOSX_DEPLOYMENT_TARGET" export MACOSX_DEPLOYMENT_TARGET EXPORT_MACOSX_DEPLOYMENT_TARGET='' AC_MSG_RESULT($MACOSX_DEPLOYMENT_TARGET) AC_MSG_CHECKING(if specified universal architectures work) AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[printf("%d", 42);]])], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) AC_MSG_ERROR(check config.log and use the '--with-universal-archs' option) ]) # end of Darwin* tests ;; esac ;; *) case $ac_sys_system in OpenUNIX*|UnixWare*) BASECFLAGS="$BASECFLAGS -K pentium,host,inline,loop_unroll,alloca " ;; SCO_SV*) BASECFLAGS="$BASECFLAGS -belf -Ki486 -DSCO5" ;; esac ;; esac case "$CC" in *icc*) # ICC needs -fp-model strict or floats behave badly CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict" ;; *xlc*) CFLAGS_NODIST="$CFLAGS_NODIST -qalias=noansi -qmaxmem=-1" ;; esac if test "$assertions" = 'true'; then : else OPT="-DNDEBUG $OPT" fi if test "$ac_arch_flags" then BASECFLAGS="$BASECFLAGS $ac_arch_flags" fi # On some compilers, pthreads are available without further options # (e.g. MacOS X). On some of these systems, the compiler will not # complain if unaccepted options are passed (e.g. gcc on Mac OS X). # So we have to see first whether pthreads are available without # options before we can check whether -Kpthread improves anything. AC_CACHE_CHECK([whether pthreads are available without options], [ac_cv_pthread_is_default], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ ac_cv_pthread_is_default=yes ac_cv_kthread=no ac_cv_pthread=no ],[ac_cv_pthread_is_default=no],[ac_cv_pthread_is_default=no]) ]) if test $ac_cv_pthread_is_default = yes then ac_cv_kpthread=no else # -Kpthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -Kpthread, # so we need to run a program to see whether it really made the # function available. AC_CACHE_CHECK([whether $CC accepts -Kpthread], [ac_cv_kpthread], [ac_save_cc="$CC" CC="$CC -Kpthread" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ac_cv_kpthread=yes],[ac_cv_kpthread=no],[ac_cv_kpthread=no]) CC="$ac_save_cc"]) fi if test $ac_cv_kpthread = no -a $ac_cv_pthread_is_default = no then # -Kthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -Kthread, # so we need to run a program to see whether it really made the # function available. AC_CACHE_CHECK([whether $CC accepts -Kthread], [ac_cv_kthread], [ac_save_cc="$CC" CC="$CC -Kthread" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ac_cv_kthread=yes],[ac_cv_kthread=no],[ac_cv_kthread=no]) CC="$ac_save_cc"]) fi if test $ac_cv_kthread = no -a $ac_cv_pthread_is_default = no then # -pthread, if available, provides the right #defines # and linker options to make pthread_create available # Some compilers won't report that they do not support -pthread, # so we need to run a program to see whether it really made the # function available. AC_CACHE_CHECK([whether $CC accepts -pthread], [ac_cv_pthread], [ac_save_cc="$CC" CC="$CC -pthread" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void* routine(void* p){return NULL;} int main(void){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ]])],[ac_cv_pthread=yes],[ac_cv_pthread=no],[ac_cv_pthread=no]) CC="$ac_save_cc"]) fi # If we have set a CC compiler flag for thread support then # check if it works for CXX, too. ac_cv_cxx_thread=no if test ! -z "$CXX" then AC_MSG_CHECKING(whether $CXX also accepts flags for thread support) ac_save_cxx="$CXX" if test "$ac_cv_kpthread" = "yes" then CXX="$CXX -Kpthread" ac_cv_cxx_thread=yes elif test "$ac_cv_kthread" = "yes" then CXX="$CXX -Kthread" ac_cv_cxx_thread=yes elif test "$ac_cv_pthread" = "yes" then CXX="$CXX -pthread" ac_cv_cxx_thread=yes fi if test $ac_cv_cxx_thread = yes then echo 'void foo();int main(){foo();}void foo(){}' > conftest.$ac_ext $CXX -c conftest.$ac_ext 2>&5 if $CXX -o conftest$ac_exeext conftest.$ac_objext 2>&5 \ && test -s conftest$ac_exeext && ./conftest$ac_exeext then ac_cv_cxx_thread=yes else ac_cv_cxx_thread=no fi rm -fr conftest* fi AC_MSG_RESULT($ac_cv_cxx_thread) fi CXX="$ac_save_cxx" dnl # check for ANSI or K&R ("traditional") preprocessor dnl AC_MSG_CHECKING(for C preprocessor type) dnl AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ dnl #define spam(name, doc) {#name, &name, #name "() -- " doc} dnl int foo; dnl struct {char *name; int *addr; char *doc;} desc = spam(foo, "something"); dnl ]], [[;]])],[cpp_type=ansi],[AC_DEFINE(HAVE_OLD_CPP) cpp_type=traditional]) dnl AC_MSG_RESULT($cpp_type) dnl autoconf 2.71 deprecates STDC_HEADERS, keep for backwards compatibility dnl assume C99 compilers provide ANSI C headers AC_DEFINE(STDC_HEADERS, 1, [Define to 1 if you have the ANSI C header files.]) # checks for header files AC_CHECK_HEADERS([ \ alloca.h asm/types.h bluetooth.h conio.h crypt.h direct.h dlfcn.h endian.h errno.h fcntl.h grp.h \ ieeefp.h io.h langinfo.h libintl.h libutil.h linux/auxvec.h sys/auxv.h linux/memfd.h \ linux/random.h linux/soundcard.h \ linux/tipc.h linux/wait.h netdb.h netinet/in.h netpacket/packet.h poll.h process.h pthread.h pty.h \ sched.h setjmp.h shadow.h signal.h spawn.h stropts.h sys/audioio.h sys/bsdtty.h sys/devpoll.h \ sys/endian.h sys/epoll.h sys/event.h sys/eventfd.h sys/file.h sys/ioctl.h sys/kern_control.h \ sys/loadavg.h sys/lock.h sys/memfd.h sys/mkdev.h sys/mman.h sys/modem.h sys/param.h sys/poll.h \ sys/random.h sys/resource.h sys/select.h sys/sendfile.h sys/socket.h sys/soundcard.h sys/stat.h \ sys/statvfs.h sys/sys_domain.h sys/syscall.h sys/sysmacros.h sys/termio.h sys/time.h sys/times.h \ sys/types.h sys/uio.h sys/un.h sys/utsname.h sys/wait.h sys/xattr.h sysexits.h syslog.h \ termios.h util.h utime.h utmp.h \ ]) AC_HEADER_DIRENT AC_HEADER_MAJOR # bluetooth/bluetooth.h has been known to not compile with -std=c99. # http://permalink.gmane.org/gmane.linux.bluez.kernel/22294 SAVE_CFLAGS=$CFLAGS CFLAGS="-std=c99 $CFLAGS" AC_CHECK_HEADERS(bluetooth/bluetooth.h) CFLAGS=$SAVE_CFLAGS # On Darwin (OS X) net/if.h requires sys/socket.h to be imported first. AC_CHECK_HEADERS([net/if.h], [], [], [#include #include #include #ifdef HAVE_SYS_SOCKET_H # include #endif ]) # On Linux, netlink.h requires asm/types.h AC_CHECK_HEADERS(linux/netlink.h,,,[ #ifdef HAVE_ASM_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) # On Linux, qrtr.h requires asm/types.h AC_CHECK_HEADERS(linux/qrtr.h,,,[ #ifdef HAVE_ASM_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) AC_CHECK_HEADERS(linux/vm_sockets.h,,,[ #ifdef HAVE_SYS_SOCKET_H #include #endif ]) # On Linux, can.h, can/bcm.h, can/j1939.h, can/raw.h require sys/socket.h # On NetBSD, netcan/can.h requires sys/socket.h AC_CHECK_HEADERS(linux/can.h linux/can/bcm.h linux/can/j1939.h linux/can/raw.h netcan/can.h,,,[ #ifdef HAVE_SYS_SOCKET_H #include #endif ]) # checks for typedefs AC_CACHE_CHECK([for clock_t in time.h], [ac_cv_clock_t_time_h], [ AC_EGREP_HEADER([clock_t], [time.h], [ac_cv_clock_t_time_h=yes], [ac_cv_clock_t_time_h=no]) ]) dnl checks for "no" AS_VAR_IF([ac_cv_clock_t_time_h], [no], [ AC_DEFINE(clock_t, long, [Define to 'long' if doesn't define.]) ]) AC_CACHE_CHECK([for makedev], [ac_cv_func_makedev], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #if defined(MAJOR_IN_MKDEV) #include #elif defined(MAJOR_IN_SYSMACROS) #include #else #include #endif ]], [[ makedev(0, 0) ]]) ],[ac_cv_func_makedev=yes],[ac_cv_func_makedev=no]) ]) AS_VAR_IF([ac_cv_func_makedev], [yes], [ AC_DEFINE(HAVE_MAKEDEV, 1, [Define this if you have the makedev macro.]) ]) # byte swapping AC_CACHE_CHECK([for le64toh], [ac_cv_func_le64toh], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_ENDIAN_H #include #elif defined(HAVE_SYS_ENDIAN_H) #include #endif ]], [[ le64toh(1) ]]) ],[ac_cv_func_le64toh=yes],[ac_cv_func_le64toh=no]) ]) AS_VAR_IF([ac_cv_func_le64toh], [yes], [ AC_DEFINE(HAVE_HTOLE64, 1, [Define this if you have le64toh()]) ]) use_lfs=yes # Don't use largefile support for GNU/Hurd case $ac_sys_system in GNU*) use_lfs=no esac if test "$use_lfs" = "yes"; then # Two defines needed to enable largefile support on various platforms # These may affect some typedefs case $ac_sys_system/$ac_sys_release in AIX*) AC_DEFINE(_LARGE_FILES, 1, [This must be defined on AIX systems to enable large file support.]) ;; esac AC_DEFINE(_LARGEFILE_SOURCE, 1, [This must be defined on some systems to enable large file support.]) AC_DEFINE(_FILE_OFFSET_BITS, 64, [This must be set to 64 on some systems to enable large file support.]) fi # Add some code to confdefs.h so that the test for off_t works on SCO cat >> confdefs.h <<\EOF #if defined(SCO_DS) #undef _OFF_T #endif EOF # Type availability checks AC_TYPE_MODE_T AC_TYPE_OFF_T AC_TYPE_PID_T AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[assume C89 semantics that RETSIGTYPE is always void]) AC_TYPE_SIZE_T AC_TYPE_UID_T AC_CHECK_TYPE(ssize_t, AC_DEFINE(HAVE_SSIZE_T, 1, [Define if your compiler provides ssize_t]),,) AC_CHECK_TYPE(__uint128_t, AC_DEFINE(HAVE_GCC_UINT128_T, 1, [Define if your compiler provides __uint128_t]),,) # Sizes and alignments of various common basic types # ANSI C requires sizeof(char) == 1, so no need to check it AC_CHECK_SIZEOF(int, 4) AC_CHECK_SIZEOF(long, 4) AC_CHECK_ALIGNOF(long) AC_CHECK_SIZEOF(long long, 8) AC_CHECK_SIZEOF(void *, 4) AC_CHECK_SIZEOF(short, 2) AC_CHECK_SIZEOF(float, 4) AC_CHECK_SIZEOF(double, 8) AC_CHECK_SIZEOF(fpos_t, 4) AC_CHECK_SIZEOF(size_t, 4) AC_CHECK_ALIGNOF(size_t) AC_CHECK_SIZEOF(pid_t, 4) AC_CHECK_SIZEOF(uintptr_t) AC_TYPE_LONG_DOUBLE AC_CHECK_SIZEOF(long double, 16) AC_CHECK_SIZEOF(_Bool, 1) AC_CHECK_SIZEOF(off_t, [], [ #ifdef HAVE_SYS_TYPES_H #include #endif ]) AC_MSG_CHECKING(whether to enable large file support) if test "$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \ "$ac_cv_sizeof_long_long" -ge "$ac_cv_sizeof_off_t"; then have_largefile_support="yes" else have_largefile_support="no" fi dnl LFS does not work with Emscripten 3.1 AS_CASE([$ac_sys_system], [Emscripten], [have_largefile_support="no"] ) AS_VAR_IF([have_largefile_support], [yes], [ AC_DEFINE(HAVE_LARGEFILE_SUPPORT, 1, [Defined to enable large file support when an off_t is bigger than a long and long long is at least as big as an off_t. You may need to add some flags for configuration and compilation to enable this mode. (For Solaris and Linux, the necessary defines are already defined.)]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ]) AC_CHECK_SIZEOF(time_t, [], [ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_TIME_H #include #endif ]) # if have pthread_t then define SIZEOF_PTHREAD_T ac_save_cc="$CC" if test "$ac_cv_kpthread" = "yes" then CC="$CC -Kpthread" elif test "$ac_cv_kthread" = "yes" then CC="$CC -Kthread" elif test "$ac_cv_pthread" = "yes" then CC="$CC -pthread" fi AC_CACHE_CHECK([for pthread_t], [ac_cv_have_pthread_t], [ AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[#include ]], [[pthread_t x; x = *(pthread_t*)0;]]) ], [ac_cv_have_pthread_t=yes], [ac_cv_have_pthread_t=no]) ]) AS_VAR_IF([ac_cv_have_pthread_t], [yes], [ AC_CHECK_SIZEOF(pthread_t, [], [ #ifdef HAVE_PTHREAD_H #include #endif ]) ]) # Issue #25658: POSIX hasn't defined that pthread_key_t is compatible with int. # This checking will be unnecessary after removing deprecated TLS API. 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AC_SUBST(SHLIB_SUFFIX) AC_SUBST(LDSHARED) AC_SUBST(LDCXXSHARED) AC_SUBST(BLDSHARED) AC_SUBST(CCSHARED) AC_SUBST(LINKFORSHARED) # SHLIB_SUFFIX is the extension of shared libraries `(including the dot!) # -- usually .so, .sl on HP-UX, .dll on Cygwin AC_MSG_CHECKING(the extension of shared libraries) if test -z "$SHLIB_SUFFIX"; then case $ac_sys_system in hp*|HP*) case `uname -m` in ia64) SHLIB_SUFFIX=.so;; *) SHLIB_SUFFIX=.sl;; esac ;; CYGWIN*) SHLIB_SUFFIX=.dll;; *) SHLIB_SUFFIX=.so;; esac fi AC_MSG_RESULT($SHLIB_SUFFIX) # LDSHARED is the ld *command* used to create shared library # -- "cc -G" on SunOS 5.x. # (Shared libraries in this instance are shared modules to be loaded into # Python, as opposed to building Python itself as a shared library.) 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BLDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)' LDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKPREFIX)/$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)' LDCXXSHARED="$LDCXXSHARED "'$(PYTHONFRAMEWORKPREFIX)/$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)' else # No framework, use the Python app as bundle-loader BLDSHARED="$LDSHARED "'-bundle_loader $(BUILDPYTHON)' LDSHARED="$LDSHARED "'-bundle_loader $(BINDIR)/python$(VERSION)$(EXE)' LDCXXSHARED="$LDCXXSHARED "'-bundle_loader $(BINDIR)/python$(VERSION)$(EXE)' fi ;; Darwin/*) # Use -undefined dynamic_lookup whenever possible (10.3 and later). # This allows an extension to be used in any Python dep_target_major=`echo ${MACOSX_DEPLOYMENT_TARGET} | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'` dep_target_minor=`echo ${MACOSX_DEPLOYMENT_TARGET} | \ sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'` if test ${dep_target_major} -eq 10 && \ test ${dep_target_minor} -le 2 then # building for OS X 10.0 through 10.2 AC_MSG_ERROR([MACOSX_DEPLOYMENT_TARGET too old ($MACOSX_DEPLOYMENT_TARGET), only 10.3 or later is supported]) else # building for OS X 10.3 and later LDSHARED='$(CC) -bundle -undefined dynamic_lookup' LDCXXSHARED='$(CXX) -bundle -undefined dynamic_lookup' BLDSHARED="$LDSHARED" fi ;; Emscripten|WASI) LDSHARED='$(CC) -shared' LDCXXSHARED='$(CXX) -shared';; Linux*|GNU*|QNX*|VxWorks*|Haiku*) LDSHARED='$(CC) -shared' LDCXXSHARED='$(CXX) -shared';; FreeBSD*) if [[ "`$CC -dM -E - &1 | grep export-dynamic >/dev/null then LINKFORSHARED="-Xlinker --export-dynamic" fi;; esac;; CYGWIN*) if test $enable_shared = "no" then LINKFORSHARED='-Wl,--out-implib=$(LDLIBRARY)' fi;; QNX*) # -Wl,-E causes the symbols to be added to the dynamic # symbol table so that they can be found when a module # is loaded. -N 2048K causes the stack size to be set # to 2048 kilobytes so that the stack doesn't overflow # when running test_compile.py. LINKFORSHARED='-Wl,-E -N 2048K';; VxWorks*) LINKFORSHARED='-Wl,-export-dynamic';; esac fi AC_MSG_RESULT($LINKFORSHARED) AC_SUBST(CFLAGSFORSHARED) AC_MSG_CHECKING(CFLAGSFORSHARED) if test ! "$LIBRARY" = "$LDLIBRARY" then case $ac_sys_system in CYGWIN*) # Cygwin needs CCSHARED when building extension DLLs # but not when building the interpreter DLL. CFLAGSFORSHARED='';; *) CFLAGSFORSHARED='$(CCSHARED)' esac fi dnl WASM dynamic linking requires -fPIC. AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [ CFLAGSFORSHARED='$(CCSHARED)' ]) AC_MSG_RESULT($CFLAGSFORSHARED) # SHLIBS are libraries (except -lc and -lm) to link to the python shared # library (with --enable-shared). # For platforms on which shared libraries are not allowed to have unresolved # symbols, this must be set to $(LIBS) (expanded by make). We do this even # if it is not required, since it creates a dependency of the shared library # to LIBS. 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FreeBSD and OpenBSD provides support in libc as well. dnl Little-endian FreeBSD, OpenBSD and NetBSD needs encoding into an octet dnl stream in big-endian byte-order AC_CHECK_HEADERS([uuid.h], [ AC_CHECK_FUNCS([uuid_create uuid_enc_be], [ have_uuid=yes LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""} LIBUUID_LIBS=${LIBUUID_LIBS-""} ]) ]) AS_VAR_IF([have_uuid], [missing], [ PKG_CHECK_MODULES( [LIBUUID], [uuid >= 2.20], [ dnl linux-util's libuuid has uuid_generate_time_safe() since v2.20 (2011) dnl and provides . have_uuid=yes AC_DEFINE([HAVE_UUID_H], [1]) AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1]) ], [ WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $LIBUUID_CFLAGS" LDFLAGS="$LDFLAGS $LIBUUID_LIBS" AC_CHECK_HEADERS([uuid/uuid.h], [ PY_CHECK_LIB([uuid], [uuid_generate_time], [have_uuid=yes]) PY_CHECK_LIB([uuid], [uuid_generate_time_safe], [ have_uuid=yes AC_DEFINE([HAVE_UUID_GENERATE_TIME_SAFE], [1]) ]) ]) AS_VAR_IF([have_uuid], [yes], [ LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""} LIBUUID_LIBS=${LIBUUID_LIBS-"-luuid"} ]) ]) ] ) ]) dnl macOS has uuid/uuid.h but uuid_generate_time is in libc AS_VAR_IF([have_uuid], [missing], [ AC_CHECK_HEADERS([uuid/uuid.h], [ AC_CHECK_FUNC([uuid_generate_time], [ have_uuid=yes LIBUUID_CFLAGS=${LIBUUID_CFLAGS-""} LIBUUID_LIBS=${LIBUUID_LIBS-""} ]) ]) ]) AS_VAR_IF([have_uuid], [missing], [have_uuid=no]) # 'Real Time' functions on Solaris # posix4 on Solaris 2.6 # pthread (first!) on Linux AC_SEARCH_LIBS(sem_init, pthread rt posix4) # check if we need libintl for locale functions AC_CHECK_LIB(intl, textdomain, [AC_DEFINE(WITH_LIBINTL, 1, [Define to 1 if libintl is needed for locale functions.]) LIBS="-lintl $LIBS"]) # checks for system dependent C++ extensions support case "$ac_sys_system" in AIX*) AC_MSG_CHECKING(for genuine AIX C++ extensions support) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[#include ]], [[loadAndInit("", 0, "")]]) ],[ AC_DEFINE(AIX_GENUINE_CPLUSPLUS, 1, [Define for AIX if your compiler is a genuine IBM xlC/xlC_r and you want support for AIX C++ shared extension modules.]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) ]) dnl The AIX_BUILDDATE is obtained from the kernel fileset - bos.mp64 # BUILD_GNU_TYPE + AIX_BUILDDATE are used to construct the platform_tag # of the AIX system used to build/package Python executable. 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SipHash24: 1, FNV: 2, SipHash13: 3, externally defined: 0]) AC_MSG_CHECKING(for --with-hash-algorithm) dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output AC_ARG_WITH(hash_algorithm, AS_HELP_STRING([--with-hash-algorithm=@<:@fnv|siphash13|siphash24@:>@], [select hash algorithm for use in Python/pyhash.c (default is SipHash13)]), [ AC_MSG_RESULT($withval) case "$withval" in siphash13) AC_DEFINE(Py_HASH_ALGORITHM, 3) ;; siphash24) AC_DEFINE(Py_HASH_ALGORITHM, 1) ;; fnv) AC_DEFINE(Py_HASH_ALGORITHM, 2) ;; *) AC_MSG_ERROR([unknown hash algorithm '$withval']) ;; esac ], [AC_MSG_RESULT(default)]) validate_tzpath() { # Checks that each element of the path is an absolute path if test -z "$1"; then # Empty string is allowed: it indicates no system TZPATH return 0 fi # Bad paths are those that don't start with / dnl quadrigraphs "@<:@" and "@:>@" produce "[" and "]" in the output if ( echo $1 | grep '\(^\|:\)\(@<:@^/@:>@\|$\)' > /dev/null); then AC_MSG_ERROR([--with-tzpath must contain only absolute paths, not $1]) return 1; fi } TZPATH="/usr/share/zoneinfo:/usr/lib/zoneinfo:/usr/share/lib/zoneinfo:/etc/zoneinfo" AC_MSG_CHECKING(for --with-tzpath) AC_ARG_WITH(tzpath, AS_HELP_STRING([--with-tzpath=] [Select the default time zone search path for zoneinfo.TZPATH]), [ case "$withval" in yes) AC_MSG_ERROR([--with-tzpath requires a value]) ;; *) validate_tzpath "$withval" TZPATH="$withval" AC_MSG_RESULT("$withval") ;; esac ], [validate_tzpath "$TZPATH" AC_MSG_RESULT("$TZPATH")]) AC_SUBST(TZPATH) # Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl. AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4 AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets case $ac_sys_system/$ac_sys_release in Haiku*) AC_CHECK_LIB(network, socket, [LIBS="-lnetwork $LIBS"], [], $LIBS) ;; esac AC_MSG_CHECKING(for --with-libs) AC_ARG_WITH(libs, AS_HELP_STRING([--with-libs='lib1 ...'], [link against additional libs (default is no)]), [ AC_MSG_RESULT($withval) LIBS="$withval $LIBS" ], [AC_MSG_RESULT(no)]) # Check for use of the system expat library AC_MSG_CHECKING(for --with-system-expat) AC_ARG_WITH(system_expat, AS_HELP_STRING([--with-system-expat], [build pyexpat module using an installed expat library, see Doc/library/pyexpat.rst (default is no)]), [], [with_system_expat="no"]) AC_MSG_RESULT($with_system_expat) AS_VAR_IF([with_system_expat], [yes], [ LIBEXPAT_CFLAGS=${LIBEXPAT_CFLAGS-""} LIBEXPAT_LDFLAGS=${LIBEXPAT_LDFLAGS-"-lexpat"} LIBEXPAT_INTERNAL= ], [ LIBEXPAT_CFLAGS="-I\$(srcdir)/Modules/expat" LIBEXPAT_LDFLAGS="-lm \$(LIBEXPAT_A)" LIBEXPAT_INTERNAL="\$(LIBEXPAT_HEADERS) \$(LIBEXPAT_A)" ]) AC_SUBST([LIBEXPAT_CFLAGS]) AC_SUBST([LIBEXPAT_LDFLAGS]) AC_SUBST([LIBEXPAT_INTERNAL]) # Check for use of the system libffi library AC_MSG_CHECKING(for --with-system-ffi) AC_ARG_WITH(system_ffi, AS_HELP_STRING([--with-system-ffi], [build _ctypes module using an installed ffi library, see Doc/library/ctypes.rst (default is system-dependent)]),,,) if test "$ac_sys_system" = "Darwin" then case "$with_system_ffi" in "") with_system_ffi="no" ;; yes|no) ;; *) AC_MSG_ERROR([--with-system-ffi accepts no arguments]) ;; esac AC_MSG_RESULT($with_system_ffi) else AC_MSG_RESULT(yes) if test "$with_system_ffi" != "" then AC_MSG_WARN([--with(out)-system-ffi is ignored on this platform]) fi with_system_ffi="yes" fi if test "$with_system_ffi" = "yes" && test -n "$PKG_CONFIG"; then LIBFFI_INCLUDEDIR="`"$PKG_CONFIG" libffi --cflags-only-I 2>/dev/null | sed -e 's/^-I//;s/ *$//'`" else LIBFFI_INCLUDEDIR="" fi AC_SUBST(LIBFFI_INCLUDEDIR) # Check for use of the system libmpdec library AC_MSG_CHECKING(for --with-system-libmpdec) AC_ARG_WITH(system_libmpdec, AS_HELP_STRING([--with-system-libmpdec], [build _decimal module using an installed libmpdec library, see Doc/library/decimal.rst (default is no)]), [], [with_system_libmpdec="no"]) AC_MSG_RESULT($with_system_libmpdec) AS_VAR_IF([with_system_libmpdec], [yes], [ LIBMPDEC_CFLAGS=${LIBMPDEC_CFLAGS-""} LIBMPDEC_LDFLAGS=${LIBMPDEC_LDFLAGS-"-lmpdec"} LIBMPDEC_INTERNAL= ], [ LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec" LIBMPDEC_LDFLAGS="-lm \$(LIBMPDEC_A)" LIBMPDEC_INTERNAL="\$(LIBMPDEC_HEADERS) \$(LIBMPDEC_A)" dnl Disable forced inlining in debug builds, see GH-94847 AS_VAR_IF([with_pydebug], [yes], [ AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DTEST_COVERAGE"]) ]) ]) AC_SUBST([LIBMPDEC_CFLAGS]) AC_SUBST([LIBMPDEC_LDFLAGS]) AC_SUBST([LIBMPDEC_INTERNAL]) # Check whether _decimal should use a coroutine-local or thread-local context AC_MSG_CHECKING(for --with-decimal-contextvar) AC_ARG_WITH(decimal_contextvar, AS_HELP_STRING([--with-decimal-contextvar], [build _decimal module using a coroutine-local rather than a thread-local context (default is yes)]), [], [with_decimal_contextvar="yes"]) if test "$with_decimal_contextvar" != "no" then AC_DEFINE(WITH_DECIMAL_CONTEXTVAR, 1, [Define if you want build the _decimal module using a coroutine-local rather than a thread-local context]) fi AC_MSG_RESULT($with_decimal_contextvar) # Check for libmpdec machine flavor AC_MSG_CHECKING(for decimal libmpdec machine) AS_CASE([$ac_sys_system], [Darwin*], [libmpdec_system=Darwin], [SunOS*], [libmpdec_system=sunos], [libmpdec_system=other] ) libmpdec_machine=unknown if test "$libmpdec_system" = Darwin; then # universal here means: build libmpdec with the same arch options # the python interpreter was built with libmpdec_machine=universal elif test $ac_cv_sizeof_size_t -eq 8; then if test "$ac_cv_gcc_asm_for_x64" = yes; then libmpdec_machine=x64 elif test "$ac_cv_type___uint128_t" = yes; then libmpdec_machine=uint128 else libmpdec_machine=ansi64 fi elif test $ac_cv_sizeof_size_t -eq 4; then if test "$ac_cv_gcc_asm_for_x87" = yes -a "$libmpdec_system" != sunos; then AS_CASE([$CC], [*gcc*], [libmpdec_machine=ppro], [*clang*], [libmpdec_machine=ppro], [libmpdec_machine=ansi32] ) else libmpdec_machine=ansi32 fi fi AC_MSG_RESULT([$libmpdec_machine]) AS_CASE([$libmpdec_machine], [x64], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_64=1 -DASM=1"])], [uint128], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_64=1 -DANSI=1 -DHAVE_UINT128_T=1"])], [ansi64], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_64=1 -DANSI=1"])], [ppro], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_32=1 -DANSI=1 -DASM=1 -Wno-unknown-pragmas"])], [ansi32], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_32=1 -DANSI=1"])], [ansi-legacy], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DCONFIG_32=1 -DANSI=1 -DLEGACY_COMPILER=1"])], [universal], [AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DUNIVERSAL=1"])], [AC_MSG_ERROR([_decimal: unsupported architecture])] ) if test "$have_ipa_pure_const_bug" = yes; then # Some versions of gcc miscompile inline asm: # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491 # https://gcc.gnu.org/ml/gcc/2010-11/msg00366.html AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -fno-ipa-pure-const"]) fi if test "$have_glibc_memmove_bug" = yes; then # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect: # https://sourceware.org/ml/libc-alpha/2010-12/msg00009.html AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -U_FORTIFY_SOURCE"]) fi dnl check for NIS / libnsl dependencies dnl libnsl dependencies include tirpc includes and lib PKG_CHECK_MODULES([LIBNSL], [libnsl], [have_nis=yes], [ LIBNSL_CFLAGS=${LIBNSL_CFLAGS-""} WITH_SAVE_ENV([ AC_SEARCH_LIBS([yp_match], [nsl], [have_nis=yes], [have_nis=no]) ]) AS_CASE([$ac_cv_search_yp_match], [no], [libnsl=""], ["none required"], [libnsl=""], [libnsl="$ac_cv_search_yp_match"] ) LIBNSL_LIBS=${LIBNSL_LIBS-$libnsl} ]) AS_VAR_IF([have_nis], [yes], [ WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $LIBNSL_CFLAGS" AC_CHECK_HEADERS([rpc/rpc.h]) ]) ]) dnl On NetBSD, when using OSS audio, you need to link against libossaudio AS_CASE([$ac_sys_system], [NetBSD*], [OSSAUDIODEV_LIBS="-lossaudio"], [OSSAUDIODEV_LIBS=""] ) dnl detect sqlite3 from Emscripten emport PY_CHECK_EMSCRIPTEN_PORT([LIBSQLITE3], [-sUSE_SQLITE3]) dnl Check for SQLite library. Use pkg-config if available. PKG_CHECK_MODULES( [LIBSQLITE3], [sqlite3 >= 3.7.15], [], [ LIBSQLITE3_CFLAGS=${LIBSQLITE3_CFLAGS-""} LIBSQLITE3_LIBS=${LIBSQLITE3_LIBS-"-lsqlite3"} ] ) AS_VAR_APPEND([LIBSQLITE3_CFLAGS], [' -I$(srcdir)/Modules/_sqlite']) dnl PY_CHECK_SQLITE_FUNC(FUNCTION, IF-FOUND, IF-NOT-FOUND) AC_DEFUN([PY_CHECK_SQLITE_FUNC], [ AC_CHECK_LIB([sqlite3], [$1], [$2], [ m4_ifblank([$3], [have_supported_sqlite3=no], [$3]) ]) ]) WITH_SAVE_ENV([ dnl bpo-45774/GH-29507: The CPP check in AC_CHECK_HEADER can fail on FreeBSD, dnl hence CPPFLAGS instead of CFLAGS. CPPFLAGS="$CPPFLAGS $LIBSQLITE3_CFLAGS" LDFLAGS="$LIBSQLITE3_LIBS $LDFLAGS" AC_CHECK_HEADER([sqlite3.h], [ have_sqlite3=yes AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([ #include #if SQLITE_VERSION_NUMBER < 3007015 # error "SQLite 3.7.15 or higher required" #endif ], []) ], [ have_supported_sqlite3=yes dnl Check that required functions are in place. A lot of stuff may be dnl omitted with SQLITE_OMIT_* compile time defines. PY_CHECK_SQLITE_FUNC([sqlite3_bind_double]) PY_CHECK_SQLITE_FUNC([sqlite3_column_decltype]) PY_CHECK_SQLITE_FUNC([sqlite3_column_double]) PY_CHECK_SQLITE_FUNC([sqlite3_complete]) PY_CHECK_SQLITE_FUNC([sqlite3_enable_shared_cache]) PY_CHECK_SQLITE_FUNC([sqlite3_progress_handler]) PY_CHECK_SQLITE_FUNC([sqlite3_result_double]) PY_CHECK_SQLITE_FUNC([sqlite3_set_authorizer]) PY_CHECK_SQLITE_FUNC([sqlite3_trace_v2], [], [ PY_CHECK_SQLITE_FUNC([sqlite3_trace]) ]) PY_CHECK_SQLITE_FUNC([sqlite3_value_double]) AC_CHECK_LIB([sqlite3], [sqlite3_load_extension], [have_sqlite3_load_extension=yes], [have_sqlite3_load_extension=no] ) AC_CHECK_LIB([sqlite3], [sqlite3_serialize], [ AC_DEFINE( [PY_SQLITE_HAVE_SERIALIZE], [1], [Define if SQLite was compiled with the serialize API] ) ]) ], [ have_supported_sqlite3=no ]) ]) ]) dnl Check for support for loadable sqlite extensions AC_MSG_CHECKING([for --enable-loadable-sqlite-extensions]) AC_ARG_ENABLE([loadable-sqlite-extensions], AS_HELP_STRING( [--enable-loadable-sqlite-extensions], [ support loadable extensions in the sqlite3 module, see Doc/library/sqlite3.rst (default is no) ] ), [ AS_VAR_IF([have_sqlite3_load_extension], [no], [ AC_MSG_RESULT([n/a]) AC_MSG_WARN([Your version of SQLite does not support loadable extensions]) ], [ AC_MSG_RESULT([yes]) AC_DEFINE( [PY_SQLITE_ENABLE_LOAD_EXTENSION], [1], [Define to 1 to build the sqlite module with loadable extensions support.] ) ]) ], [ AC_MSG_RESULT([no]) ] ) dnl dnl Detect Tcl/Tk. Use pkg-config if available. dnl found_tcltk=no for _QUERY in \ "tcl >= 8.5.12 tk >= 8.5.12" \ "tcl8.6 tk8.6" \ "tcl86 tk86" \ "tcl8.5 >= 8.5.12 tk8.5 >= 8.5.12" \ "tcl85 >= 8.5.12 tk85 >= 8.5.12" \ ; do PKG_CHECK_EXISTS([$_QUERY], [ PKG_CHECK_MODULES([TCLTK], [$_QUERY], [found_tcltk=yes], [found_tcltk=no]) ]) AS_VAR_IF([found_tcltk], [yes], [break]) done AS_VAR_IF([found_tcltk], [no], [ TCLTK_CFLAGS=${TCLTK_CFLAGS-""} TCLTK_LIBS=${TCLTK_LIBS-""} ]) dnl FreeBSD has an X11 dependency which is not implicitly resolved. AS_CASE([$ac_sys_system], [FreeBSD*], [ PKG_CHECK_EXISTS([x11], [ PKG_CHECK_MODULES([X11], [x11], [ TCLTK_CFLAGS="$TCLTK_CFLAGS $X11_CFLAGS" TCLTK_LIBS="$TCLTK_LIBS $X11_LIBS" ]) ]) ] ) WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $TCLTK_CFLAGS" LIBS="$TCLTK_LIBS $LDFLAGS" AC_LINK_IFELSE([ AC_LANG_PROGRAM([ #include #include #if defined(TK_HEX_VERSION) # if TK_HEX_VERSION < 0x0805020c # error "Tk older than 8.5.12 not supported" # endif #endif #if (TCL_MAJOR_VERSION < 8) || \ ((TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 5)) || \ ((TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION == 5) && (TCL_RELEASE_SERIAL < 12)) # error "Tcl older than 8.5.12 not supported" #endif #if (TK_MAJOR_VERSION < 8) || \ ((TK_MAJOR_VERSION == 8) && (TK_MINOR_VERSION < 5)) || \ ((TK_MAJOR_VERSION == 8) && (TK_MINOR_VERSION == 5) && (TK_RELEASE_SERIAL < 12)) # error "Tk older than 8.5.12 not supported" #endif ], [ void *x1 = Tcl_Init; void *x2 = Tk_Init; ]) ], [ have_tcltk=yes dnl The X11/xlib.h file bundled in the Tk sources can cause function dnl prototype warnings from the compiler. Since we cannot easily fix dnl that, suppress the warnings here instead. AS_VAR_APPEND([TCLTK_CFLAGS], [" -Wno-strict-prototypes -DWITH_APPINIT=1"]) ], [ have_tcltk=no ]) ]) dnl check for _gdbmmodule dependencies dnl NOTE: gdbm does not provide a pkgconf file. AC_ARG_VAR([GDBM_CFLAGS], [C compiler flags for gdbm]) AC_ARG_VAR([GDBM_LIBS], [additional linker flags for gdbm]) WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $GDBM_CFLAGS" LDFLAGS="$GDBM_LIBS $LDFLAGS" AC_CHECK_HEADERS([gdbm.h], [ AC_CHECK_LIB([gdbm], [gdbm_open], [ have_gdbm=yes GDBM_LIBS=${GDBM_LIBS-"-lgdbm"} ], [have_gdbm=no]) ], [have_gdbm=no]) ]) # check for _dbmmodule.c dependencies AC_CHECK_HEADERS([ndbm.h], [ LIBS_SAVE="$LIBS" AC_CHECK_LIB([ndbm], [dbm_open]) LIBS="$LIBS_SAVE" AC_CHECK_LIB([gdbm_compat], [dbm_open]) LIBS="$LIBS_SAVE" ]) # "gdbm-ndbm.h" and "gdbm/ndbm.h" are both normalized to "gdbm_ndbm_h" # unset ac_cv_header_gdbm_ndbm_h to prevent false positive cache hits. AS_UNSET([ac_cv_header_gdbm_ndbm_h]) AC_CACHE_VAL([ac_cv_header_gdbm_slash_ndbm_h], [ AC_CHECK_HEADER( [gdbm/ndbm.h], [ac_cv_header_gdbm_slash_ndbm_h=yes], [ac_cv_header_gdbm_slash_ndbm_h=no] ) ]) AS_VAR_IF([ac_cv_header_gdbm_slash_ndbm_h], [yes], [ AC_DEFINE([HAVE_GDBM_NDBM_H], [1], [Define to 1 if you have the header file.]) ]) AS_UNSET([ac_cv_header_gdbm_ndbm_h]) AC_CACHE_VAL([ac_cv_header_gdbm_dash_ndbm_h], [ AC_CHECK_HEADER( [gdbm-ndbm.h], [ac_cv_header_gdbm_dash_ndbm_h=yes], [ac_cv_header_gdbm_dash_ndbm_h=no] ) ]) AS_VAR_IF([ac_cv_header_gdbm_dash_ndbm_h], [yes], [ AC_DEFINE([HAVE_GDBM_DASH_NDBM_H], [1], [Define to 1 if you have the header file.]) ]) AS_UNSET([ac_cv_header_gdbm_ndbm_h]) if test "$ac_cv_header_gdbm_slash_ndbm_h" = yes -o "$ac_cv_header_gdbm_dash_ndbm_h" = yes; then LIBS_SAVE="$LIBS" AC_CHECK_LIB([gdbm_compat], [dbm_open]) LIBS="$LIBS_SAVE" fi # Check for libdb >= 5 with dbm_open() # db.h re-defines the name of the function AC_CHECK_HEADERS([db.h], [ AC_CACHE_CHECK([for libdb], [ac_cv_have_libdb], [ LIBS_SAVE="$LIBS" LIBS="$LIBS -ldb" AC_LINK_IFELSE([AC_LANG_PROGRAM([ #define DB_DBM_HSEARCH 1 #include #if DB_VERSION_MAJOR < 5 #error "dh.h: DB_VERSION_MAJOR < 5 is not supported." #endif ], [DBM *dbm = dbm_open(NULL, 0, 0)]) ], [ac_cv_have_libdb=yes], [ac_cv_have_libdb=no]) LIBS="$LIBS_SAVE" ]) AS_VAR_IF([ac_cv_have_libdb], [yes], [ AC_DEFINE([HAVE_LIBDB], [1], [Define to 1 if you have the `db' library (-ldb).]) ]) ]) # Check for --with-dbmliborder AC_MSG_CHECKING(for --with-dbmliborder) AC_ARG_WITH(dbmliborder, AS_HELP_STRING([--with-dbmliborder=db1:db2:...], [override order to check db backends for dbm; a valid value is a colon separated string with the backend names `ndbm', `gdbm' and `bdb'.]), [], [with_dbmliborder=gdbm:ndbm:bdb]) have_gdbm_dbmliborder=no as_save_IFS=$IFS IFS=: for db in $with_dbmliborder; do AS_CASE([$db], [ndbm], [], [gdbm], [have_gdbm_dbmliborder=yes], [bdb], [], [with_dbmliborder=error] ) done IFS=$as_save_IFS AS_VAR_IF([with_dbmliborder], [error], [ AC_MSG_ERROR([proper usage is --with-dbmliborder=db1:db2:... (gdbm:ndbm:bdb)]) ]) AC_MSG_RESULT($with_dbmliborder) # Templates for things AC_DEFINEd more than once. # For a single AC_DEFINE, no template is needed. AH_TEMPLATE(_REENTRANT, [Define to force use of thread-safe errno, h_errno, and other functions]) if test "$ac_cv_pthread_is_default" = yes then # Defining _REENTRANT on system with POSIX threads should not hurt. AC_DEFINE(_REENTRANT) posix_threads=yes if test "$ac_sys_system" = "SunOS"; then CFLAGS="$CFLAGS -D_REENTRANT" fi elif test "$ac_cv_kpthread" = "yes" then CC="$CC -Kpthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -Kpthread" fi posix_threads=yes elif test "$ac_cv_kthread" = "yes" then CC="$CC -Kthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -Kthread" fi posix_threads=yes elif test "$ac_cv_pthread" = "yes" then CC="$CC -pthread" if test "$ac_cv_cxx_thread" = "yes"; then CXX="$CXX -pthread" fi posix_threads=yes else if test ! -z "$withval" -a -d "$withval" then LDFLAGS="$LDFLAGS -L$withval" fi # According to the POSIX spec, a pthreads implementation must # define _POSIX_THREADS in unistd.h. Some apparently don't # (e.g. gnu pth with pthread emulation) AC_MSG_CHECKING(for _POSIX_THREADS in unistd.h) AC_EGREP_CPP(yes, [ #include #ifdef _POSIX_THREADS yes #endif ], unistd_defines_pthreads=yes, unistd_defines_pthreads=no) AC_MSG_RESULT($unistd_defines_pthreads) AC_DEFINE(_REENTRANT) # Just looking for pthread_create in libpthread is not enough: # on HP/UX, pthread.h renames pthread_create to a different symbol name. # So we really have to include pthread.h, and then link. _libs=$LIBS LIBS="$LIBS -lpthread" AC_MSG_CHECKING([for pthread_create in -lpthread]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include #include void * start_routine (void *arg) { exit (0); }]], [[ pthread_create (NULL, NULL, start_routine, NULL)]])],[ AC_MSG_RESULT(yes) posix_threads=yes ],[ LIBS=$_libs AC_CHECK_FUNC(pthread_detach, [ posix_threads=yes ],[ AC_CHECK_LIB(pthreads, pthread_create, [ posix_threads=yes LIBS="$LIBS -lpthreads" ], [ AC_CHECK_LIB(c_r, pthread_create, [ posix_threads=yes LIBS="$LIBS -lc_r" ], [ AC_CHECK_LIB(pthread, __pthread_create_system, [ posix_threads=yes LIBS="$LIBS -lpthread" ], [ AC_CHECK_LIB(cma, pthread_create, [ posix_threads=yes LIBS="$LIBS -lcma" ],[ AS_CASE([$ac_sys_system], [WASI], [posix_threads=stub], [AC_MSG_ERROR([could not find pthreads on your system])] ) ])])])])])]) AC_CHECK_LIB(mpc, usconfig, [ LIBS="$LIBS -lmpc" ]) fi if test "$posix_threads" = "yes"; then if test "$unistd_defines_pthreads" = "no"; then AC_DEFINE(_POSIX_THREADS, 1, [Define if you have POSIX threads, and your system does not define that.]) fi # Bug 662787: Using semaphores causes unexplicable hangs on Solaris 8. case $ac_sys_system/$ac_sys_release in SunOS/5.6) AC_DEFINE(HAVE_PTHREAD_DESTRUCTOR, 1, [Defined for Solaris 2.6 bug in pthread header.]) ;; SunOS/5.8) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; AIX/*) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; NetBSD/*) AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, [Define if the Posix semaphores do not work on your system]) ;; esac AC_CACHE_CHECK([if PTHREAD_SCOPE_SYSTEM is supported], [ac_cv_pthread_system_supported], [AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include void *foo(void *parm) { return NULL; } int main(void) { pthread_attr_t attr; pthread_t id; if (pthread_attr_init(&attr)) return (-1); if (pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM)) return (-1); if (pthread_create(&id, &attr, foo, NULL)) return (-1); return (0); }]])], [ac_cv_pthread_system_supported=yes], [ac_cv_pthread_system_supported=no], [ac_cv_pthread_system_supported=no]) ]) if test "$ac_cv_pthread_system_supported" = "yes"; then AC_DEFINE(PTHREAD_SYSTEM_SCHED_SUPPORTED, 1, [Defined if PTHREAD_SCOPE_SYSTEM supported.]) fi AC_CHECK_FUNCS(pthread_sigmask, [case $ac_sys_system in CYGWIN*) AC_DEFINE(HAVE_BROKEN_PTHREAD_SIGMASK, 1, [Define if pthread_sigmask() does not work on your system.]) ;; esac]) AC_CHECK_FUNCS(pthread_getcpuclockid) fi AS_VAR_IF([posix_threads], [stub], [ AC_DEFINE([HAVE_PTHREAD_STUBS], [1], [Define if platform requires stubbed pthreads support]) ]) # Check for enable-ipv6 AH_TEMPLATE(ENABLE_IPV6, [Define if --enable-ipv6 is specified]) AC_MSG_CHECKING([if --enable-ipv6 is specified]) AC_ARG_ENABLE(ipv6, AS_HELP_STRING([--enable-ipv6], [enable ipv6 (with ipv4) support, see Doc/library/socket.rst (default is yes if supported)]), [ case "$enableval" in no) AC_MSG_RESULT(no) ipv6=no ;; *) AC_MSG_RESULT(yes) AC_DEFINE(ENABLE_IPV6) ipv6=yes ;; esac ], [ dnl the check does not work on cross compilation case... AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* AF_INET6 available check */ #include #include ]], [[int domain = AF_INET6;]])],[ ipv6=yes ],[ ipv6=no ]) AS_CASE([$ac_sys_system], [WASI], [ipv6=no] ) AC_MSG_RESULT([$ipv6]) if test "$ipv6" = "yes"; then AC_MSG_CHECKING(if RFC2553 API is available) AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([[#include #include ]], [[struct sockaddr_in6 x; x.sin6_scope_id;]]) ],[ AC_MSG_RESULT(yes) ipv6=yes ],[ AC_MSG_RESULT(no, IPv6 disabled) ipv6=no ]) fi if test "$ipv6" = "yes"; then AC_DEFINE(ENABLE_IPV6) fi ]) ipv6type=unknown ipv6lib=none ipv6trylibc=no if test "$ipv6" = "yes"; then AC_MSG_CHECKING([ipv6 stack type]) for i in inria kame linux-glibc linux-inet6 solaris toshiba v6d zeta; do case $i in inria) dnl http://www.kame.net/ AC_EGREP_CPP(yes, [ #include #ifdef IPV6_INRIA_VERSION yes #endif], [ipv6type=$i]) ;; kame) dnl http://www.kame.net/ AC_EGREP_CPP(yes, [ #include #ifdef __KAME__ yes #endif], [ipv6type=$i; ipv6lib=inet6 ipv6libdir=/usr/local/v6/lib ipv6trylibc=yes]) ;; linux-glibc) dnl http://www.v6.linux.or.jp/ AC_EGREP_CPP(yes, [ #include #if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)) yes #endif], [ipv6type=$i; ipv6trylibc=yes]) ;; linux-inet6) dnl http://www.v6.linux.or.jp/ if test -d /usr/inet6; then ipv6type=$i ipv6lib=inet6 ipv6libdir=/usr/inet6/lib BASECFLAGS="-I/usr/inet6/include $BASECFLAGS" fi ;; solaris) if test -f /etc/netconfig; then if $GREP -q tcp6 /etc/netconfig; then ipv6type=$i ipv6trylibc=yes fi fi ;; toshiba) AC_EGREP_CPP(yes, [ #include #ifdef _TOSHIBA_INET6 yes #endif], [ipv6type=$i; ipv6lib=inet6; ipv6libdir=/usr/local/v6/lib]) ;; v6d) AC_EGREP_CPP(yes, [ #include #ifdef __V6D__ yes #endif], [ipv6type=$i; ipv6lib=v6; ipv6libdir=/usr/local/v6/lib; BASECFLAGS="-I/usr/local/v6/include $BASECFLAGS"]) ;; zeta) AC_EGREP_CPP(yes, [ #include #ifdef _ZETA_MINAMI_INET6 yes #endif], [ipv6type=$i; ipv6lib=inet6; ipv6libdir=/usr/local/v6/lib]) ;; esac if test "$ipv6type" != "unknown"; then break fi done AC_MSG_RESULT($ipv6type) fi if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then LIBS="-L$ipv6libdir -l$ipv6lib $LIBS" AC_MSG_NOTICE([using lib$ipv6lib]) else AS_VAR_IF([ipv6trylibc], [yes], [ AC_MSG_NOTICE([using libc]) ], [ AC_MSG_ERROR([m4_normalize([ No $ipv6lib library found; cannot continue. You need to fetch lib$ipv6lib.a from appropriate ipv6 kit and compile beforehand. ])]) ]) fi fi AC_CACHE_CHECK([CAN_RAW_FD_FRAMES], [ac_cv_can_raw_fd_frames], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ /* CAN_RAW_FD_FRAMES available check */ #include ]], [[int can_raw_fd_frames = CAN_RAW_FD_FRAMES;]])], [ac_cv_can_raw_fd_frames=yes], [ac_cv_can_raw_fd_frames=no]) ]) AS_VAR_IF([ac_cv_can_raw_fd_frames], [yes], [ AC_DEFINE(HAVE_LINUX_CAN_RAW_FD_FRAMES, 1, [Define if compiling using Linux 3.6 or later.]) ]) AC_CACHE_CHECK([for CAN_RAW_JOIN_FILTERS], [ac_cv_can_raw_join_filters], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[int can_raw_join_filters = CAN_RAW_JOIN_FILTERS;]])], [ac_cv_can_raw_join_filters=yes], [ac_cv_can_raw_join_filters=no]) ]) AS_VAR_IF([ac_cv_can_raw_join_filters], [yes], [ AC_DEFINE(HAVE_LINUX_CAN_RAW_JOIN_FILTERS, 1, [Define if compiling using Linux 4.1 or later.]) ]) # Check for --with-doc-strings AC_MSG_CHECKING(for --with-doc-strings) AC_ARG_WITH(doc-strings, AS_HELP_STRING([--with-doc-strings], [enable documentation strings (default is yes)])) if test -z "$with_doc_strings" then with_doc_strings="yes" fi if test "$with_doc_strings" != "no" then AC_DEFINE(WITH_DOC_STRINGS, 1, [Define if you want documentation strings in extension modules]) fi AC_MSG_RESULT($with_doc_strings) # Check for Python-specific malloc support AC_MSG_CHECKING(for --with-pymalloc) AC_ARG_WITH(pymalloc, AS_HELP_STRING([--with-pymalloc], [enable specialized mallocs (default is yes)])) if test -z "$with_pymalloc" then dnl default to yes except for wasm32-emscripten and wasm32-wasi. AS_CASE([$ac_sys_system], [Emscripten], [with_pymalloc="no"], [WASI], [with_pymalloc="no"], [with_pymalloc="yes"] ) fi if test "$with_pymalloc" != "no" then AC_DEFINE(WITH_PYMALLOC, 1, [Define if you want to compile in Python-specific mallocs]) fi AC_MSG_RESULT($with_pymalloc) # Check whether objects such as float, tuple and dict are using # freelists to optimization memory allocation. AC_MSG_CHECKING(for --with-freelists) AC_ARG_WITH(freelists, AS_HELP_STRING([--with-freelists], [enable object freelists (default is yes)])) if test -z "$with_freelists" then with_freelists="yes" fi if test "$with_freelists" != "no" then AC_DEFINE(WITH_FREELISTS, 1, [Define if you want to compile in object freelists optimization]) fi AC_MSG_RESULT($with_freelists) # Check for --with-c-locale-coercion AC_MSG_CHECKING(for --with-c-locale-coercion) AC_ARG_WITH(c-locale-coercion, AS_HELP_STRING([--with-c-locale-coercion], [enable C locale coercion to a UTF-8 based locale (default is yes)])) if test -z "$with_c_locale_coercion" then with_c_locale_coercion="yes" fi if test "$with_c_locale_coercion" != "no" then AC_DEFINE(PY_COERCE_C_LOCALE, 1, [Define if you want to coerce the C locale to a UTF-8 based locale]) fi AC_MSG_RESULT($with_c_locale_coercion) # Check for Valgrind support AC_MSG_CHECKING([for --with-valgrind]) AC_ARG_WITH([valgrind], AS_HELP_STRING([--with-valgrind], [enable Valgrind support (default is no)]),, with_valgrind=no) AC_MSG_RESULT([$with_valgrind]) if test "$with_valgrind" != no; then AC_CHECK_HEADER([valgrind/valgrind.h], [AC_DEFINE([WITH_VALGRIND], 1, [Define if you want pymalloc to be disabled when running under valgrind])], [AC_MSG_ERROR([Valgrind support requested but headers not available])] ) OPT="-DDYNAMIC_ANNOTATIONS_ENABLED=1 $OPT" fi # Check for DTrace support AC_MSG_CHECKING(for --with-dtrace) AC_ARG_WITH(dtrace, AS_HELP_STRING([--with-dtrace],[enable DTrace support (default is no)]),, with_dtrace=no) AC_MSG_RESULT($with_dtrace) AC_SUBST(DTRACE) AC_SUBST(DFLAGS) AC_SUBST(DTRACE_HEADERS) AC_SUBST(DTRACE_OBJS) DTRACE= DTRACE_HEADERS= DTRACE_OBJS= if test "$with_dtrace" = "yes" then AC_PATH_PROG(DTRACE, [dtrace], [not found]) if test "$DTRACE" = "not found"; then AC_MSG_ERROR([dtrace command not found on \$PATH]) fi AC_DEFINE(WITH_DTRACE, 1, [Define if you want to compile in DTrace support]) DTRACE_HEADERS="Include/pydtrace_probes.h" # On OS X, DTrace providers do not need to be explicitly compiled and # linked into the binary. Correspondingly, dtrace(1) is missing the ELF # generation flag '-G'. We check for presence of this flag, rather than # hardcoding support by OS, in the interest of robustness. AC_CACHE_CHECK([whether DTrace probes require linking], [ac_cv_dtrace_link], [dnl ac_cv_dtrace_link=no echo 'BEGIN{}' > conftest.d "$DTRACE" $DFLAGS -G -s conftest.d -o conftest.o > /dev/null 2>&1 && \ ac_cv_dtrace_link=yes ]) if test "$ac_cv_dtrace_link" = "yes"; then DTRACE_OBJS="Python/pydtrace.o" fi fi dnl Platform-specific C and header files. PLATFORM_HEADERS= PLATFORM_OBJS= AS_CASE([$ac_sys_system], [Emscripten], [ AS_VAR_APPEND([PLATFORM_OBJS], [' Python/emscripten_signal.o']) AS_VAR_APPEND([PLATFORM_HEADERS], [' $(srcdir)/Include/internal/pycore_emscripten_signal.h']) ], ) AC_SUBST([PLATFORM_HEADERS]) AC_SUBST([PLATFORM_OBJS]) # -I${DLINCLDIR} is added to the compile rule for importdl.o AC_SUBST(DLINCLDIR) DLINCLDIR=. # the dlopen() function means we might want to use dynload_shlib.o. some # platforms have dlopen(), but don't want to use it. AC_CHECK_FUNCS(dlopen) # DYNLOADFILE specifies which dynload_*.o file we will use for dynamic # loading of modules. AC_SUBST(DYNLOADFILE) AC_MSG_CHECKING(DYNLOADFILE) if test -z "$DYNLOADFILE" then case $ac_sys_system/$ac_sys_release in hp*|HP*) DYNLOADFILE="dynload_hpux.o";; *) # use dynload_shlib.c and dlopen() if we have it; otherwise stub # out any dynamic loading if test "$ac_cv_func_dlopen" = yes then DYNLOADFILE="dynload_shlib.o" else DYNLOADFILE="dynload_stub.o" fi ;; esac fi AC_MSG_RESULT($DYNLOADFILE) if test "$DYNLOADFILE" != "dynload_stub.o" then AC_DEFINE(HAVE_DYNAMIC_LOADING, 1, [Defined when any dynamic module loading is enabled.]) fi # MACHDEP_OBJS can be set to platform-specific object files needed by Python AC_SUBST(MACHDEP_OBJS) AC_MSG_CHECKING(MACHDEP_OBJS) if test -z "$MACHDEP_OBJS" then MACHDEP_OBJS=$extra_machdep_objs else MACHDEP_OBJS="$MACHDEP_OBJS $extra_machdep_objs" fi if test -z "$MACHDEP_OBJS"; then AC_MSG_RESULT([none]) else AC_MSG_RESULT([$MACHDEP_OBJS]) fi # checks for library functions AC_CHECK_FUNCS([ \ accept4 alarm bind_textdomain_codeset chmod chown clock close_range confstr \ copy_file_range ctermid dup dup3 execv explicit_bzero explicit_memset \ faccessat fchmod fchmodat fchown fchownat fdopendir fdwalk fexecve \ fork fork1 fpathconf fstatat ftime ftruncate futimens futimes futimesat \ gai_strerror getegid getentropy geteuid getgid getgrgid getgrgid_r \ getgrnam_r getgrouplist getgroups gethostname getitimer getloadavg getlogin \ getpeername getpgid getpid getppid getpriority _getpty \ getpwent getpwnam_r getpwuid getpwuid_r getresgid getresuid getrusage getsid getspent \ getspnam getuid getwd if_nameindex initgroups kill killpg lchown linkat \ lockf lstat lutimes madvise mbrtowc memrchr mkdirat mkfifo mkfifoat \ mknod mknodat mktime mmap mremap nice openat opendir pathconf pause pipe \ pipe2 plock poll posix_fadvise posix_fallocate posix_spawn posix_spawnp \ pread preadv preadv2 pthread_condattr_setclock pthread_init pthread_kill \ pwrite pwritev pwritev2 readlink readlinkat readv realpath renameat \ rtpSpawn sched_get_priority_max sched_rr_get_interval sched_setaffinity \ sched_setparam sched_setscheduler sem_clockwait sem_getvalue sem_open \ sem_timedwait sem_unlink sendfile setegid seteuid setgid sethostname \ setitimer setlocale setpgid setpgrp setpriority setregid setresgid \ setresuid setreuid setsid setuid setvbuf shutdown sigaction sigaltstack \ sigfillset siginterrupt sigpending sigrelse sigtimedwait sigwait \ sigwaitinfo snprintf splice strftime strlcpy strsignal symlinkat sync \ sysconf system tcgetpgrp tcsetpgrp tempnam timegm times tmpfile \ tmpnam tmpnam_r truncate ttyname umask uname unlinkat utimensat utimes vfork \ wait wait3 wait4 waitid waitpid wcscoll wcsftime wcsxfrm wmemcmp writev \ ]) # Force lchmod off for Linux. Linux disallows changing the mode of symbolic # links. Some libc implementations have a stub lchmod implementation that always # returns an error. if test "$MACHDEP" != linux; then AC_CHECK_FUNCS(lchmod) fi AC_CHECK_DECL(dirfd, AC_DEFINE(HAVE_DIRFD, 1, Define if you have the 'dirfd' function or macro.), , [#include #include ]) dnl PY_CHECK_FUNC(FUNCTION, [INCLUDES], [AC_DEFINE-VAR]) AC_DEFUN([PY_CHECK_FUNC], [ AS_VAR_PUSHDEF([py_var], [ac_cv_func_$1]) AS_VAR_PUSHDEF([py_define], m4_ifblank([$3], [[HAVE_]m4_toupper($1)], [$3])) AC_CACHE_CHECK( [for $1], [py_var], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([$2], [void *x=$1])], [AS_VAR_SET([py_var], [yes])], [AS_VAR_SET([py_var], [no])])] ) AS_VAR_IF( [py_var], [yes], [AC_DEFINE([py_define], [1], [Define if you have the '$1' function.])]) AS_VAR_POPDEF([py_var]) AS_VAR_POPDEF([py_define]) ]) # For some functions, having a definition is not sufficient, since # we want to take their address. PY_CHECK_FUNC([chroot], [#include ]) PY_CHECK_FUNC([link], [#include ]) PY_CHECK_FUNC([symlink], [#include ]) PY_CHECK_FUNC([fchdir], [#include ]) PY_CHECK_FUNC([fsync], [#include ]) PY_CHECK_FUNC([fdatasync], [#include ]) PY_CHECK_FUNC([epoll_create], [#include ], [HAVE_EPOLL]) PY_CHECK_FUNC([epoll_create1], [#include ]) PY_CHECK_FUNC([kqueue],[ #include #include ]) PY_CHECK_FUNC([prlimit], [ #include #include ]) PY_CHECK_FUNC([_dyld_shared_cache_contains_path], [#include ], [HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH]) PY_CHECK_FUNC([memfd_create], [ #ifdef HAVE_SYS_MMAN_H #include #endif #ifdef HAVE_SYS_MEMFD_H #include #endif ]) PY_CHECK_FUNC([eventfd], [ #ifdef HAVE_SYS_EVENTFD_H #include #endif ]) # On some systems (eg. FreeBSD 5), we would find a definition of the # functions ctermid_r, setgroups in the library, but no prototype # (e.g. because we use _XOPEN_SOURCE). See whether we can take their # address to avoid compiler warnings and potential miscompilations # because of the missing prototypes. PY_CHECK_FUNC([ctermid_r], [#include ]) AC_CACHE_CHECK([for flock declaration], [ac_cv_flock_decl], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [void* p = flock] )], [ac_cv_flock_decl=yes], [ac_cv_flock_decl=no] ) ]) dnl Linking with libbsd may be necessary on AIX for flock function. AS_VAR_IF([ac_cv_flock_decl], [yes], [AC_CHECK_FUNCS([flock], [], [AC_CHECK_LIB([bsd], [flock], [FCNTL_LIBS="-lbsd"])])]) PY_CHECK_FUNC([getpagesize], [#include ]) AC_CACHE_CHECK([for broken unsetenv], [ac_cv_broken_unsetenv], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [int res = unsetenv("DUMMY")])], [ac_cv_broken_unsetenv=no], [ac_cv_broken_unsetenv=yes] ) ]) AS_VAR_IF([ac_cv_broken_unsetenv], [yes], [ AC_DEFINE(HAVE_BROKEN_UNSETENV, 1, [Define if 'unsetenv' does not return an int.]) ]) dnl check for true AC_CHECK_PROGS(TRUE, true, /bin/true) dnl On some systems (e.g. Solaris 9), hstrerror and inet_aton are in -lresolv dnl On others, they are in the C library, so we to take no action AC_CHECK_LIB(c, inet_aton, [$ac_cv_prog_TRUE], AC_CHECK_LIB(resolv, inet_aton) ) # On Tru64, chflags seems to be present, but calling it will # exit Python AC_CACHE_CHECK([for chflags], [ac_cv_have_chflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(int argc, char *argv[]) { if(chflags(argv[0], 0) != 0) return 1; return 0; } ]])], [ac_cv_have_chflags=yes], [ac_cv_have_chflags=no], [ac_cv_have_chflags=cross]) ]) if test "$ac_cv_have_chflags" = cross ; then AC_CHECK_FUNC([chflags], [ac_cv_have_chflags="yes"], [ac_cv_have_chflags="no"]) fi if test "$ac_cv_have_chflags" = yes ; then AC_DEFINE(HAVE_CHFLAGS, 1, [Define to 1 if you have the 'chflags' function.]) fi AC_CACHE_CHECK([for lchflags], [ac_cv_have_lchflags], [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(int argc, char *argv[]) { if(lchflags(argv[0], 0) != 0) return 1; return 0; } ]])],[ac_cv_have_lchflags=yes],[ac_cv_have_lchflags=no],[ac_cv_have_lchflags=cross]) ]) if test "$ac_cv_have_lchflags" = cross ; then AC_CHECK_FUNC([lchflags], [ac_cv_have_lchflags="yes"], [ac_cv_have_lchflags="no"]) fi if test "$ac_cv_have_lchflags" = yes ; then AC_DEFINE(HAVE_LCHFLAGS, 1, [Define to 1 if you have the 'lchflags' function.]) fi dnl Check for compression libraries AH_TEMPLATE([HAVE_ZLIB_COPY], [Define if the zlib library has inflateCopy]) dnl detect zlib from Emscripten emport PY_CHECK_EMSCRIPTEN_PORT([ZLIB], [-sUSE_ZLIB]) PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0], [ have_zlib=yes dnl zlib 1.2.0 (2003) added inflateCopy AC_DEFINE([HAVE_ZLIB_COPY], [1]) ], [ WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $ZLIB_CFLAGS" LDFLAGS="$LDFLAGS $ZLIB_LIBS" AC_CHECK_HEADERS([zlib.h], [ PY_CHECK_LIB([z], [gzread], [have_zlib=yes], [have_zlib=no]) ], [have_zlib=no]) AS_VAR_IF([have_zlib], [yes], [ ZLIB_CFLAGS=${ZLIB_CFLAGS-""} ZLIB_LIBS=${ZLIB_LIBS-"-lz"} PY_CHECK_LIB([z], [inflateCopy], [AC_DEFINE([HAVE_ZLIB_COPY], [1])]) ]) ]) ]) dnl binascii can use zlib for optimized crc32. AS_VAR_IF([have_zlib], [yes], [ BINASCII_CFLAGS="-DUSE_ZLIB_CRC32 $ZLIB_CFLAGS" BINASCII_LIBS="$ZLIB_LIBS" ]) dnl detect bzip2 from Emscripten emport PY_CHECK_EMSCRIPTEN_PORT([BZIP2], [-sUSE_BZIP2]) PKG_CHECK_MODULES([BZIP2], [bzip2], [have_bzip2=yes], [ WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $BZIP2_CFLAGS" LDFLAGS="$LDFLAGS $BZIP2_LIBS" AC_CHECK_HEADERS([bzlib.h], [ AC_CHECK_LIB([bz2], [BZ2_bzCompress], [have_bzip2=yes], [have_bzip2=no]) ], [have_bzip2=no]) AS_VAR_IF([have_bzip2], [yes], [ BZIP2_CFLAGS=${BZIP2_CFLAGS-""} BZIP2_LIBS=${BZIP2_LIBS-"-lbz2"} ]) ]) ]) PKG_CHECK_MODULES([LIBLZMA], [liblzma], [have_liblzma=yes], [ WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $LIBLZMA_CFLAGS" LDFLAGS="$LDFLAGS $LIBLZMA_LIBS" AC_CHECK_HEADERS([lzma.h], [ AC_CHECK_LIB([lzma], [lzma_easy_encoder], [have_liblzma=yes], [have_liblzma=no]) ], [have_liblzma=no]) AS_VAR_IF([have_liblzma], [yes], [ LIBLZMA_CFLAGS=${LIBLZMA_CFLAGS-""} LIBLZMA_LIBS=${LIBLZMA_LIBS-"-llzma"} ]) ]) ]) dnl PY_CHECK_NETDB_FUNC(FUNCTION) AC_DEFUN([PY_CHECK_NETDB_FUNC], [PY_CHECK_FUNC([$1], [#include ])]) PY_CHECK_NETDB_FUNC([hstrerror]) dnl not available in WASI yet PY_CHECK_NETDB_FUNC([getservbyname]) PY_CHECK_NETDB_FUNC([getservbyport]) PY_CHECK_NETDB_FUNC([gethostbyname]) PY_CHECK_NETDB_FUNC([gethostbyaddr]) PY_CHECK_NETDB_FUNC([getprotobyname]) dnl PY_CHECK_SOCKET_FUNC(FUNCTION) AC_DEFUN([PY_CHECK_SOCKET_FUNC], [PY_CHECK_FUNC([$1], [ #include #include #include #include ])]) PY_CHECK_SOCKET_FUNC([inet_aton]) PY_CHECK_SOCKET_FUNC([inet_ntoa]) PY_CHECK_SOCKET_FUNC([inet_pton]) dnl not available in WASI yet PY_CHECK_SOCKET_FUNC([getpeername]) PY_CHECK_SOCKET_FUNC([getsockname]) PY_CHECK_SOCKET_FUNC([accept]) PY_CHECK_SOCKET_FUNC([bind]) PY_CHECK_SOCKET_FUNC([connect]) PY_CHECK_SOCKET_FUNC([listen]) PY_CHECK_SOCKET_FUNC([recvfrom]) PY_CHECK_SOCKET_FUNC([sendto]) PY_CHECK_SOCKET_FUNC([setsockopt]) PY_CHECK_SOCKET_FUNC([socket]) # On some systems, setgroups is in unistd.h, on others, in grp.h PY_CHECK_FUNC([setgroups], [ #include #ifdef HAVE_GRP_H #include #endif ]) # check for openpty, login_tty, and forkpty AC_CHECK_FUNCS(openpty,, AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lutil"], AC_CHECK_LIB(bsd,openpty, [AC_DEFINE(HAVE_OPENPTY) LIBS="$LIBS -lbsd"]) ) ) AC_SEARCH_LIBS([login_tty], [util], [AC_DEFINE([HAVE_LOGIN_TTY], [1], [Define to 1 if you have the `login_tty' function.])] ) AC_CHECK_FUNCS(forkpty,, AC_CHECK_LIB(util,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lutil"], AC_CHECK_LIB(bsd,forkpty, [AC_DEFINE(HAVE_FORKPTY) LIBS="$LIBS -lbsd"]) ) ) # check for long file support functions AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs) AC_REPLACE_FUNCS(dup2) AC_CHECK_FUNCS(getpgrp, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[getpgrp(0);]])], [AC_DEFINE(GETPGRP_HAVE_ARG, 1, [Define if getpgrp() must be called as getpgrp(0).])], []) ) AC_CHECK_FUNCS(setpgrp, AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[setpgrp(0,0);]])], [AC_DEFINE(SETPGRP_HAVE_ARG, 1, [Define if setpgrp() must be called as setpgrp(0, 0).])], []) ) dnl We search for both crypt and crypt_r as one or the other may be defined dnl libxcrypt provides and libcrypt with crypt_r() since dnl at least 3.1.1 from 2015. dnl FreeBSD defines crypt_r() in AH_TEMPLATE([HAVE_CRYPT_R], [Define if you have the crypt_r() function.]) PKG_CHECK_MODULES([LIBCRYPT], [libxcrypt >= 3.1.1], [ AC_DEFINE([HAVE_CRYPT_R], [1]) ], [ WITH_SAVE_ENV([ AC_SEARCH_LIBS([crypt_r], [crypt], [ AC_DEFINE([HAVE_CRYPT_R], [1]) if test "$ac_cv_search_crypt_r" = "none required"; then libcrypt= else libcrypt="$ac_cv_search_crypt_r" fi LIBCRYPT_LIBS=${LIBCRYPT_LIBS-$libcrypt} ]) ]) ]) WITH_SAVE_ENV([ CPPFLAGS="$CPPFLAGS $LIBCRYPT_CFLAGS" LIBS="$LIBCRYPT_LIBS $LIBS" AC_CACHE_CHECK([for crypt or crypt_r], [ac_cv_crypt_crypt], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([ #ifdef HAVE_CRYPT_H #include #endif #include ], [ #ifdef HAVE_CRYPT_R void *x = crypt_r; #else void *x = crypt; #endif ]) ], [ac_cv_crypt_crypt=yes], [ac_cv_crypt_crypt=no]) ]) ]) AC_CHECK_FUNCS(clock_gettime, [], [ AC_CHECK_LIB(rt, clock_gettime, [ LIBS="$LIBS -lrt" AC_DEFINE(HAVE_CLOCK_GETTIME, 1) AC_DEFINE(TIMEMODULE_LIB, [rt], [Library needed by timemodule.c: librt may be needed for clock_gettime()]) ]) ]) AC_CHECK_FUNCS(clock_getres, [], [ AC_CHECK_LIB(rt, clock_getres, [ AC_DEFINE(HAVE_CLOCK_GETRES, 1) ]) ]) AC_CHECK_FUNCS(clock_settime, [], [ AC_CHECK_LIB(rt, clock_settime, [ AC_DEFINE(HAVE_CLOCK_SETTIME, 1) ]) ]) AC_CHECK_FUNCS(clock_nanosleep, [], [ AC_CHECK_LIB(rt, clock_nanosleep, [ AC_DEFINE(HAVE_CLOCK_NANOSLEEP, 1) ]) ]) AC_CHECK_FUNCS(nanosleep, [], [ AC_CHECK_LIB(rt, nanosleep, [ AC_DEFINE(HAVE_NANOSLEEP, 1) ]) ]) AC_CACHE_CHECK([for major, minor, and makedev], [ac_cv_device_macros], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #if defined(MAJOR_IN_MKDEV) #include #elif defined(MAJOR_IN_SYSMACROS) #include #else #include #endif ]], [[ makedev(major(0),minor(0)); ]])],[ac_cv_device_macros=yes], [ac_cv_device_macros=no]) ]) AS_VAR_IF([ac_cv_device_macros], [yes], [ AC_DEFINE(HAVE_DEVICE_MACROS, 1, [Define to 1 if you have the device macros.]) ]) dnl no longer used, now always defined for backwards compatibility AC_DEFINE(SYS_SELECT_WITH_SYS_TIME, 1, [Define if you can safely include both and (which you can't on SCO ODT 3.0).]) # On OSF/1 V5.1, getaddrinfo is available, but a define # for [no]getaddrinfo in netdb.h. AC_CACHE_CHECK([for getaddrinfo], [ac_cv_func_getaddrinfo], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include #include #include ]], [[getaddrinfo(NULL, NULL, NULL, NULL);]])], [ac_cv_func_getaddrinfo=yes], [ac_cv_func_getaddrinfo=no]) ]) AS_VAR_IF([ac_cv_func_getaddrinfo], [yes], [ AC_CACHE_CHECK([getaddrinfo bug], [ac_cv_buggy_getaddrinfo], AC_RUN_IFELSE([AC_LANG_SOURCE([[[ #include #include #include #include #include #include int main(void) { int passive, gaierr, inet4 = 0, inet6 = 0; struct addrinfo hints, *ai, *aitop; char straddr[INET6_ADDRSTRLEN], strport[16]; for (passive = 0; passive <= 1; passive++) { memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_UNSPEC; hints.ai_flags = passive ? AI_PASSIVE : 0; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) { (void)gai_strerror(gaierr); goto bad; } for (ai = aitop; ai; ai = ai->ai_next) { if (ai->ai_addr == NULL || ai->ai_addrlen == 0 || getnameinfo(ai->ai_addr, ai->ai_addrlen, straddr, sizeof(straddr), strport, sizeof(strport), NI_NUMERICHOST|NI_NUMERICSERV) != 0) { goto bad; } switch (ai->ai_family) { case AF_INET: if (strcmp(strport, "54321") != 0) { goto bad; } if (passive) { if (strcmp(straddr, "0.0.0.0") != 0) { goto bad; } } else { if (strcmp(straddr, "127.0.0.1") != 0) { goto bad; } } inet4++; break; case AF_INET6: if (strcmp(strport, "54321") != 0) { goto bad; } if (passive) { if (strcmp(straddr, "::") != 0) { goto bad; } } else { if (strcmp(straddr, "::1") != 0) { goto bad; } } inet6++; break; case AF_UNSPEC: goto bad; break; default: /* another family support? */ break; } } freeaddrinfo(aitop); aitop = NULL; } if (!(inet4 == 0 || inet4 == 2)) goto bad; if (!(inet6 == 0 || inet6 == 2)) goto bad; if (aitop) freeaddrinfo(aitop); return 0; bad: if (aitop) freeaddrinfo(aitop); return 1; } ]]])], [ac_cv_buggy_getaddrinfo=no], [ac_cv_buggy_getaddrinfo=yes], [ if test "${enable_ipv6+set}" = set; then ac_cv_buggy_getaddrinfo="no -- configured with --(en|dis)able-ipv6" else ac_cv_buggy_getaddrinfo=yes fi])) dnl if ac_cv_func_getaddrinfo ]) if test "$ac_cv_func_getaddrinfo" = no -o "$ac_cv_buggy_getaddrinfo" = yes then AS_VAR_IF([ipv6], [yes], [ AC_MSG_ERROR([m4_normalize([ You must get working getaddrinfo() function or pass the "--disable-ipv6" option to configure. ])]) ]) else AC_DEFINE(HAVE_GETADDRINFO, 1, [Define if you have the getaddrinfo function.]) fi AC_CHECK_FUNCS(getnameinfo) dnl autoconf 2.71 deprecates AC_HEADER_TIME, keep for backwards compatibility dnl TIME_WITH_SYS_TIME works on all supported systems that have sys/time.h AS_VAR_IF([ac_cv_header_sys_time_h], [yes], [ AC_DEFINE([TIME_WITH_SYS_TIME], 1, [Define to 1 if you can safely include both and .]) ]) # checks for structures AC_STRUCT_TM AC_STRUCT_TIMEZONE AC_CHECK_MEMBERS([struct stat.st_rdev]) AC_CHECK_MEMBERS([struct stat.st_blksize]) AC_CHECK_MEMBERS([struct stat.st_flags]) AC_CHECK_MEMBERS([struct stat.st_gen]) AC_CHECK_MEMBERS([struct stat.st_birthtime]) AC_CHECK_MEMBERS([struct stat.st_blocks]) AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_passwd], [], [], [[ #include #include ]]) # Issue #21085: In Cygwin, siginfo_t does not have si_band field. AC_CHECK_MEMBERS([siginfo_t.si_band], [], [], [[#include ]]) AC_CACHE_CHECK([for time.h that defines altzone], [ac_cv_header_time_altzone], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[return altzone;]])], [ac_cv_header_time_altzone=yes], [ac_cv_header_time_altzone=no]) ]) if test $ac_cv_header_time_altzone = yes; then AC_DEFINE(HAVE_ALTZONE, 1, [Define this if your time.h defines altzone.]) fi AC_CACHE_CHECK([for addrinfo], [ac_cv_struct_addrinfo], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[struct addrinfo a]])], [ac_cv_struct_addrinfo=yes], [ac_cv_struct_addrinfo=no])) if test $ac_cv_struct_addrinfo = yes; then AC_DEFINE(HAVE_ADDRINFO, 1, [struct addrinfo (netdb.h)]) fi AC_CACHE_CHECK([for sockaddr_storage], [ac_cv_struct_sockaddr_storage], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include # include ]], [[struct sockaddr_storage s]])], [ac_cv_struct_sockaddr_storage=yes], [ac_cv_struct_sockaddr_storage=no])) if test $ac_cv_struct_sockaddr_storage = yes; then AC_DEFINE(HAVE_SOCKADDR_STORAGE, 1, [struct sockaddr_storage (sys/socket.h)]) fi AC_CACHE_CHECK([for sockaddr_alg], [ac_cv_struct_sockaddr_alg], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include # include # include ]], [[struct sockaddr_alg s]])], [ac_cv_struct_sockaddr_alg=yes], [ac_cv_struct_sockaddr_alg=no])) if test $ac_cv_struct_sockaddr_alg = yes; then AC_DEFINE(HAVE_SOCKADDR_ALG, 1, [struct sockaddr_alg (linux/if_alg.h)]) fi # checks for compiler characteristics AC_C_CONST AC_CACHE_CHECK([for working signed char], [ac_cv_working_signed_char_c], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[signed char c;]])], [ac_cv_working_signed_char_c=yes], [ac_cv_working_signed_char_c=no]) ]) AS_VAR_IF([ac_cv_working_signed_char_c], [no], [ AC_DEFINE(signed, , [Define to empty if the keyword does not work.]) ]) AC_CACHE_CHECK([for prototypes], [ac_cv_function_prototypes], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[int foo(int x) { return 0; }]], [[return foo(10);]])], [ac_cv_function_prototypes=yes], [ac_cv_function_prototypes=no]) ]) AS_VAR_IF([ac_cv_function_prototypes], [yes], [ AC_DEFINE(HAVE_PROTOTYPES, 1, [Define if your compiler supports function prototype]) ]) works=no AC_CACHE_CHECK([for variable length prototypes and stdarg.h], [ac_cv_stdarg_prototypes], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include int foo(int x, ...) { va_list va; va_start(va, x); va_arg(va, int); va_arg(va, char *); va_arg(va, double); return 0; } ]], [[return foo(10, "", 3.14);]])], [ac_cv_stdarg_prototypes=yes], [ac_cv_stdarg_prototypes=no]) ]) AS_VAR_IF([ac_cv_stdarg_prototypes], [yes], [ AC_DEFINE(HAVE_STDARG_PROTOTYPES, 1, [Define if your compiler supports variable length function prototypes (e.g. void fprintf(FILE *, char *, ...);) *and* ]) ]) # check for socketpair PY_CHECK_FUNC([socketpair], [ #include #include ]) # check if sockaddr has sa_len member AC_CACHE_CHECK([if sockaddr has sa_len member], [ac_cv_struct_sockaddr_sa_len], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include #include ]], [[struct sockaddr x; x.sa_len = 0;]])], [ac_cv_struct_sockaddr_sa_len=yes], [ac_cv_struct_sockaddr_sa_len=no]) ]) AS_VAR_IF([ac_cv_struct_sockaddr_sa_len], [yes], [ AC_DEFINE(HAVE_SOCKADDR_SA_LEN, 1, [Define if sockaddr has sa_len member]) ]) # sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-( AH_TEMPLATE(HAVE_GETHOSTBYNAME_R, [Define this if you have some version of gethostbyname_r()]) AC_CHECK_FUNC(gethostbyname_r, [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_MSG_CHECKING([gethostbyname_r with 6 args]) OLD_CFLAGS=$CFLAGS CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he, *res; char buffer[2048]; int buflen = 2048; int h_errnop; (void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop) ]])],[ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1, [Define this if you have the 6-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ],[ AC_MSG_RESULT(no) AC_MSG_CHECKING([gethostbyname_r with 5 args]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he; char buffer[2048]; int buflen = 2048; int h_errnop; (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop) ]])], [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1, [Define this if you have the 5-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) AC_MSG_CHECKING([gethostbyname_r with 3 args]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ # include ]], [[ char *name; struct hostent *he; struct hostent_data data; (void) gethostbyname_r(name, he, &data); ]])], [ AC_DEFINE(HAVE_GETHOSTBYNAME_R) AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1, [Define this if you have the 3-arg version of gethostbyname_r().]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ]) ]) ]) CFLAGS=$OLD_CFLAGS ], [ AC_CHECK_FUNCS(gethostbyname) ]) AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG) AC_SUBST(HAVE_GETHOSTBYNAME_R) AC_SUBST(HAVE_GETHOSTBYNAME) # checks for system services # (none yet) # Linux requires this for correct f.p. operations AC_CHECK_FUNC(__fpu_control, [], [AC_CHECK_LIB(ieee, __fpu_control) ]) # check for --with-libm=... AC_SUBST(LIBM) case $ac_sys_system in Darwin) ;; *) LIBM=-lm esac AC_MSG_CHECKING(for --with-libm=STRING) AC_ARG_WITH(libm, AS_HELP_STRING([--with-libm=STRING], [override libm math library to STRING (default is system-dependent)]), [ if test "$withval" = no then LIBM= AC_MSG_RESULT(force LIBM empty) elif test "$withval" != yes then LIBM=$withval AC_MSG_RESULT(set LIBM="$withval") else AC_MSG_ERROR([proper usage is --with-libm=STRING]) fi], [AC_MSG_RESULT(default LIBM="$LIBM")]) # check for --with-libc=... AC_SUBST(LIBC) AC_MSG_CHECKING(for --with-libc=STRING) AC_ARG_WITH(libc, AS_HELP_STRING([--with-libc=STRING], [override libc C library to STRING (default is system-dependent)]), [ if test "$withval" = no then LIBC= AC_MSG_RESULT(force LIBC empty) elif test "$withval" != yes then LIBC=$withval AC_MSG_RESULT(set LIBC="$withval") else AC_MSG_ERROR([proper usage is --with-libc=STRING]) fi], [AC_MSG_RESULT(default LIBC="$LIBC")]) # ************************************** # * Check for gcc x64 inline assembler * # ************************************** AC_CACHE_CHECK([for x64 gcc inline assembler], [ac_cv_gcc_asm_for_x64], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ __asm__ __volatile__ ("movq %rcx, %rax"); ]])],[ac_cv_gcc_asm_for_x64=yes],[ac_cv_gcc_asm_for_x64=no]) ]) AS_VAR_IF([ac_cv_gcc_asm_for_x64], [yes], [ AC_DEFINE(HAVE_GCC_ASM_FOR_X64, 1, [Define if we can use x64 gcc inline assembler]) ]) # ************************************************** # * Check for various properties of floating point * # ************************************************** AX_C_FLOAT_WORDS_BIGENDIAN if test "$ax_cv_c_float_words_bigendian" = "yes" then AC_DEFINE(DOUBLE_IS_BIG_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored with the most significant byte first]) elif test "$ax_cv_c_float_words_bigendian" = "no" then AC_DEFINE(DOUBLE_IS_LITTLE_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored with the least significant byte first]) else # Some ARM platforms use a mixed-endian representation for doubles. # While Python doesn't currently have full support for these platforms # (see e.g., issue 1762561), we can at least make sure that float <-> string # conversions work. # FLOAT_WORDS_BIGENDIAN doesnt actually detect this case, but if it's not big # or little, then it must be this? AC_DEFINE(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754, 1, [Define if C doubles are 64-bit IEEE 754 binary format, stored in ARM mixed-endian order (byte order 45670123)]) fi # The short float repr introduced in Python 3.1 requires the # correctly-rounded string <-> double conversion functions from # Python/dtoa.c, which in turn require that the FPU uses 53-bit # rounding; this is a problem on x86, where the x87 FPU has a default # rounding precision of 64 bits. For gcc/x86, we can fix this by # using inline assembler to get and set the x87 FPU control word. # This inline assembler syntax may also work for suncc and icc, # so we try it on all platforms. AC_CACHE_CHECK([whether we can use gcc inline assembler to get and set x87 control word], [ac_cv_gcc_asm_for_x87], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ unsigned short cw; __asm__ __volatile__ ("fnstcw %0" : "=m" (cw)); __asm__ __volatile__ ("fldcw %0" : : "m" (cw)); ]])],[ac_cv_gcc_asm_for_x87=yes],[ac_cv_gcc_asm_for_x87=no]) ]) AS_VAR_IF([ac_cv_gcc_asm_for_x87], [yes], [ AC_DEFINE(HAVE_GCC_ASM_FOR_X87, 1, [Define if we can use gcc inline assembler to get and set x87 control word]) ]) AC_CACHE_CHECK([whether we can use gcc inline assembler to get and set mc68881 fpcr], [ac_cv_gcc_asm_for_mc68881], [ AC_LINK_IFELSE( [AC_LANG_PROGRAM([[]], [[ unsigned int fpcr; __asm__ __volatile__ ("fmove.l %%fpcr,%0" : "=g" (fpcr)); __asm__ __volatile__ ("fmove.l %0,%%fpcr" : : "g" (fpcr)); ]])],[ac_cv_gcc_asm_for_mc68881=yes],[ac_cv_gcc_asm_for_mc68881=no]) ]) AS_VAR_IF([ac_cv_gcc_asm_for_mc68881], [yes], [ AC_DEFINE(HAVE_GCC_ASM_FOR_MC68881, 1, [Define if we can use gcc inline assembler to get and set mc68881 fpcr]) ]) # Detect whether system arithmetic is subject to x87-style double # rounding issues. The result of this test has little meaning on non # IEEE 754 platforms. On IEEE 754, test should return 1 if rounding # mode is round-to-nearest and double rounding issues are present, and # 0 otherwise. See https://github.com/python/cpython/issues/47186 for more info. AC_CACHE_CHECK([for x87-style double rounding], [ac_cv_x87_double_rounding], [ # $BASECFLAGS may affect the result ac_save_cc="$CC" CC="$CC $BASECFLAGS" AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(void) { volatile double x, y, z; /* 1./(1-2**-53) -> 1+2**-52 (correct), 1.0 (double rounding) */ x = 0.99999999999999989; /* 1-2**-53 */ y = 1./x; if (y != 1.) exit(0); /* 1e16+2.99999 -> 1e16+2. (correct), 1e16+4. (double rounding) */ x = 1e16; y = 2.99999; z = x + y; if (z != 1e16+4.) exit(0); /* both tests show evidence of double rounding */ exit(1); } ]])], [ac_cv_x87_double_rounding=no], [ac_cv_x87_double_rounding=yes], [ac_cv_x87_double_rounding=no]) CC="$ac_save_cc" ]) AS_VAR_IF([ac_cv_x87_double_rounding], [yes], [ AC_DEFINE(X87_DOUBLE_ROUNDING, 1, [Define if arithmetic is subject to x87-style double rounding issue]) ]) # ************************************ # * Check for mathematical functions * # ************************************ LIBS_SAVE=$LIBS LIBS="$LIBS $LIBM" AC_CHECK_FUNCS( [acosh asinh atanh erf erfc expm1 log1p log2], [], [AC_MSG_ERROR([Python requires C99 compatible libm])] ) LIBS=$LIBS_SAVE dnl For multiprocessing module, check that sem_open dnl actually works. For FreeBSD versions <= 7.2, dnl the kernel module that provides POSIX semaphores dnl isn't loaded by default, so an attempt to call dnl sem_open results in a 'Signal 12' error. AC_CACHE_CHECK([whether POSIX semaphores are enabled], [ac_cv_posix_semaphores_enabled], AC_RUN_IFELSE([ AC_LANG_SOURCE([ #include #include #include #include #include int main(void) { sem_t *a = sem_open("/autoconf", O_CREAT, S_IRUSR|S_IWUSR, 0); if (a == SEM_FAILED) { perror("sem_open"); return 1; } sem_close(a); sem_unlink("/autoconf"); return 0; } ]) ], [ac_cv_posix_semaphores_enabled=yes], [ac_cv_posix_semaphores_enabled=no], [ac_cv_posix_semaphores_enabled=yes]) ) AS_VAR_IF([ac_cv_posix_semaphores_enabled], [no], [ AC_DEFINE( [POSIX_SEMAPHORES_NOT_ENABLED], [1], [Define if POSIX semaphores aren't enabled on your system] ) ]) dnl Multiprocessing check for broken sem_getvalue AC_CACHE_CHECK([for broken sem_getvalue], [ac_cv_broken_sem_getvalue], AC_RUN_IFELSE([ AC_LANG_SOURCE([ #include #include #include #include #include int main(void){ sem_t *a = sem_open("/autocftw", O_CREAT, S_IRUSR|S_IWUSR, 0); int count; int res; if(a==SEM_FAILED){ perror("sem_open"); return 1; } res = sem_getvalue(a, &count); sem_close(a); sem_unlink("/autocftw"); return res==-1 ? 1 : 0; } ]) ], [ac_cv_broken_sem_getvalue=no], [ac_cv_broken_sem_getvalue=yes], [ac_cv_broken_sem_getvalue=yes]) ) AS_VAR_IF([ac_cv_broken_sem_getvalue], [yes], [ AC_DEFINE( [HAVE_BROKEN_SEM_GETVALUE], [1], [define to 1 if your sem_getvalue is broken.] ) ]) AC_CHECK_DECLS([RTLD_LAZY, RTLD_NOW, RTLD_GLOBAL, RTLD_LOCAL, RTLD_NODELETE, RTLD_NOLOAD, RTLD_DEEPBIND, RTLD_MEMBER], [], [], [[#include ]]) # determine what size digit to use for Python's longs AC_MSG_CHECKING([digit size for Python's longs]) AC_ARG_ENABLE(big-digits, AS_HELP_STRING([--enable-big-digits@<:@=15|30@:>@],[use big digits (30 or 15 bits) for Python longs (default is 30)]]), [case $enable_big_digits in yes) enable_big_digits=30 ;; no) enable_big_digits=15 ;; [15|30]) ;; *) AC_MSG_ERROR([bad value $enable_big_digits for --enable-big-digits; value should be 15 or 30]) ;; esac AC_MSG_RESULT($enable_big_digits) AC_DEFINE_UNQUOTED(PYLONG_BITS_IN_DIGIT, $enable_big_digits, [Define as the preferred size in bits of long digits]) ], [AC_MSG_RESULT(no value specified)]) # check for wchar.h AC_CHECK_HEADER(wchar.h, [ AC_DEFINE(HAVE_WCHAR_H, 1, [Define if the compiler provides a wchar.h header file.]) wchar_h="yes" ], wchar_h="no" ) # determine wchar_t size if test "$wchar_h" = yes then AC_CHECK_SIZEOF(wchar_t, 4, [#include ]) fi # check whether wchar_t is signed or not if test "$wchar_h" = yes then # check whether wchar_t is signed or not AC_CACHE_CHECK([whether wchar_t is signed], [ac_cv_wchar_t_signed], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include int main() { /* Success: exit code 0 */ return ((((wchar_t) -1) < ((wchar_t) 0)) ? 0 : 1); } ]])], [ac_cv_wchar_t_signed=yes], [ac_cv_wchar_t_signed=no], [ac_cv_wchar_t_signed=yes])]) fi AC_MSG_CHECKING(whether wchar_t is usable) # wchar_t is only usable if it maps to an unsigned type if test "$ac_cv_sizeof_wchar_t" -ge 2 \ -a "$ac_cv_wchar_t_signed" = "no" then AC_DEFINE(HAVE_USABLE_WCHAR_T, 1, [Define if you have a useable wchar_t type defined in wchar.h; useable means wchar_t must be an unsigned type with at least 16 bits. (see Include/unicodeobject.h).]) AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi case $ac_sys_system/$ac_sys_release in SunOS/*) if test -f /etc/os-release; then OS_NAME=$(awk -F= '/^NAME=/ {print substr($2,2,length($2)-2)}' /etc/os-release) if test "x$OS_NAME" = "xOracle Solaris"; then # bpo-43667: In Oracle Solaris, the internal form of wchar_t in # non-Unicode locales is not Unicode and hence cannot be used directly. # https://docs.oracle.com/cd/E37838_01/html/E61053/gmwke.html AC_DEFINE(HAVE_NON_UNICODE_WCHAR_T_REPRESENTATION, 1, [Define if the internal form of wchar_t in non-Unicode locales is not Unicode.]) fi fi ;; esac # check for endianness AC_C_BIGENDIAN # ABI version string for Python extension modules. This appears between the # periods in shared library file names, e.g. foo..so. It is calculated # from the following attributes which affect the ABI of this Python build (in # this order): # # * The Python implementation (always 'cpython-' for us) # * The major and minor version numbers # * --with-pydebug (adds a 'd') # # Thus for example, Python 3.2 built with wide unicode, pydebug, and pymalloc, # would get a shared library ABI version tag of 'cpython-32dmu' and shared # libraries would be named 'foo.cpython-32dmu.so'. # # In Python 3.2 and older, --with-wide-unicode added a 'u' flag. # In Python 3.7 and older, --with-pymalloc added a 'm' flag. AC_SUBST(SOABI) AC_MSG_CHECKING(ABIFLAGS) AC_MSG_RESULT($ABIFLAGS) AC_MSG_CHECKING(SOABI) SOABI='cpython-'`echo $VERSION | tr -d .`${ABIFLAGS}${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET} AC_MSG_RESULT($SOABI) # Release and debug (Py_DEBUG) ABI are compatible, but not Py_TRACE_REFS ABI if test "$Py_DEBUG" = 'true' -a "$with_trace_refs" != "yes"; then # Similar to SOABI but remove "d" flag from ABIFLAGS AC_SUBST(ALT_SOABI) ALT_SOABI='cpython-'`echo $VERSION | tr -d .``echo $ABIFLAGS | tr -d d`${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET} AC_DEFINE_UNQUOTED(ALT_SOABI, "${ALT_SOABI}", [Alternative SOABI used in debug build to load C extensions built in release mode]) fi AC_SUBST(EXT_SUFFIX) EXT_SUFFIX=.${SOABI}${SHLIB_SUFFIX} AC_MSG_CHECKING(LDVERSION) LDVERSION='$(VERSION)$(ABIFLAGS)' AC_MSG_RESULT($LDVERSION) # On Android and Cygwin the shared libraries must be linked with libpython. AC_SUBST(LIBPYTHON) if test -n "$ANDROID_API_LEVEL" -o "$MACHDEP" = "cygwin"; then LIBPYTHON="-lpython${VERSION}${ABIFLAGS}" else LIBPYTHON='' fi AC_SUBST(BINLIBDEST) BINLIBDEST='$(LIBDIR)/python$(VERSION)' # Check for --with-platlibdir # /usr/$LIDIRNAME/python$VERSION AC_SUBST(PLATLIBDIR) PLATLIBDIR="lib" AC_MSG_CHECKING(for --with-platlibdir) AC_ARG_WITH(platlibdir, AS_HELP_STRING([--with-platlibdir=DIRNAME], [Python library directory name (default is "lib")]), [ # ignore 3 options: # --with-platlibdir # --with-platlibdir= # --without-platlibdir if test -n "$withval" -a "$withval" != yes -a "$withval" != no then AC_MSG_RESULT(yes) PLATLIBDIR="$withval" BINLIBDEST='${exec_prefix}/${PLATLIBDIR}/python$(VERSION)' else AC_MSG_RESULT(no) fi], [AC_MSG_RESULT(no)]) dnl define LIBPL after ABIFLAGS and LDVERSION is defined. AC_SUBST(PY_ENABLE_SHARED) if test x$PLATFORM_TRIPLET = x; then LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}" else LIBPL='$(prefix)'"/${PLATLIBDIR}/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}" fi AC_SUBST(LIBPL) # Check for --with-wheel-pkg-dir=PATH AC_SUBST(WHEEL_PKG_DIR) WHEEL_PKG_DIR="" AC_MSG_CHECKING(for --with-wheel-pkg-dir) AC_ARG_WITH(wheel-pkg-dir, AS_HELP_STRING([--with-wheel-pkg-dir=PATH], [Directory of wheel packages used by ensurepip (default: none)]), [ if test -n "$withval"; then AC_MSG_RESULT(yes) WHEEL_PKG_DIR="$withval" else AC_MSG_RESULT(no) fi], [AC_MSG_RESULT(no)]) # Check whether right shifting a negative integer extends the sign bit # or fills with zeros (like the Cray J90, according to Tim Peters). AC_CACHE_CHECK([whether right shift extends the sign bit], [ac_cv_rshift_extends_sign], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ int main(void) { return (((-1)>>3 == -1) ? 0 : 1); } ]])], [ac_cv_rshift_extends_sign=yes], [ac_cv_rshift_extends_sign=no], [ac_cv_rshift_extends_sign=yes])]) if test "$ac_cv_rshift_extends_sign" = no then AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS, 1, [Define if i>>j for signed int i does not extend the sign bit when i < 0]) fi # check for getc_unlocked and related locking functions AC_CACHE_CHECK([for getc_unlocked() and friends], [ac_cv_have_getc_unlocked], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ FILE *f = fopen("/dev/null", "r"); flockfile(f); getc_unlocked(f); funlockfile(f); ]])],[ac_cv_have_getc_unlocked=yes],[ac_cv_have_getc_unlocked=no])]) if test "$ac_cv_have_getc_unlocked" = yes then AC_DEFINE(HAVE_GETC_UNLOCKED, 1, [Define this if you have flockfile(), getc_unlocked(), and funlockfile()]) fi AC_ARG_WITH([readline], [AS_HELP_STRING([--with(out)-readline@<:@=editline@:>@], [use Editline for backend or disable readline module])], [], [with_readline=yes]) # check where readline lives py_cv_lib_readline=no # save the value of LIBS so we don't actually link Python with readline LIBS_no_readline=$LIBS if test "$with_readline" != no; then case "$with_readline" in editline|edit) LIBREADLINE=edit AC_DEFINE(WITH_EDITLINE, 1, [Define to build the readline module against Editline.]) ;; yes|readline) LIBREADLINE=readline ;; *) AC_MSG_ERROR([proper usage is --with(out)-readline@<:@=editline@:>@]) ;; esac # On some systems we need to link readline to a termcap compatible # library. NOTE: Keep the precedence of listed libraries synchronised # with setup.py. AC_MSG_CHECKING([how to link readline libs]) for py_libtermcap in "" tinfo ncursesw ncurses curses termcap; do if test -z "$py_libtermcap"; then READLINE_LIBS="-l$LIBREADLINE" else READLINE_LIBS="-l$LIBREADLINE -l$py_libtermcap" fi LIBS="$READLINE_LIBS $LIBS_no_readline" AC_LINK_IFELSE( [AC_LANG_CALL([],[readline])], [py_cv_lib_readline=yes]) if test $py_cv_lib_readline = yes; then break fi done # Uncomment this line if you want to use READLINE_LIBS in Makefile or scripts #AC_SUBST([READLINE_LIBS]) if test $py_cv_lib_readline = no; then AC_MSG_RESULT([none]) else AC_MSG_RESULT([$READLINE_LIBS]) AC_DEFINE(HAVE_LIBREADLINE, 1, [Define to build the readline module.]) fi fi if test "$py_cv_lib_readline" = yes; then # check for readline 2.2 AC_CHECK_DECL(rl_completion_append_character, AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER, 1, [Define if you have readline 2.2]),, [ #include /* Must be first for Gnu Readline */ #ifdef WITH_EDITLINE # include #else # include #endif ]) AC_CHECK_DECL(rl_completion_suppress_append, AC_DEFINE(HAVE_RL_COMPLETION_SUPPRESS_APPEND, 1, [Define if you have rl_completion_suppress_append]),, [ #include /* Must be first for Gnu Readline */ #ifdef WITH_EDITLINE # include #else # include #endif ]) # check for readline 4.0 AC_CHECK_LIB($LIBREADLINE, rl_pre_input_hook, AC_DEFINE(HAVE_RL_PRE_INPUT_HOOK, 1, [Define if you have readline 4.0]),,$READLINE_LIBS) # also in 4.0 AC_CHECK_LIB($LIBREADLINE, rl_completion_display_matches_hook, AC_DEFINE(HAVE_RL_COMPLETION_DISPLAY_MATCHES_HOOK, 1, [Define if you have readline 4.0]),,$READLINE_LIBS) # also in 4.0, but not in editline AC_CHECK_LIB($LIBREADLINE, rl_resize_terminal, AC_DEFINE(HAVE_RL_RESIZE_TERMINAL, 1, [Define if you have readline 4.0]),,$READLINE_LIBS) # check for readline 4.2 AC_CHECK_LIB($LIBREADLINE, rl_completion_matches, AC_DEFINE(HAVE_RL_COMPLETION_MATCHES, 1, [Define if you have readline 4.2]),,$READLINE_LIBS) # also in readline 4.2 AC_CHECK_DECL(rl_catch_signals, AC_DEFINE(HAVE_RL_CATCH_SIGNAL, 1, [Define if you can turn off readline's signal handling.]),, [ #include /* Must be first for Gnu Readline */ #ifdef WITH_EDITLINE # include #else # include #endif ]) AC_CHECK_LIB($LIBREADLINE, append_history, AC_DEFINE(HAVE_RL_APPEND_HISTORY, 1, [Define if readline supports append_history]),,$READLINE_LIBS) fi # End of readline checks: restore LIBS LIBS=$LIBS_no_readline AC_CACHE_CHECK([for broken nice()], [ac_cv_broken_nice], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(void) { int val1 = nice(1); if (val1 != -1 && val1 == nice(2)) exit(0); exit(1); } ]])], [ac_cv_broken_nice=yes], [ac_cv_broken_nice=no], [ac_cv_broken_nice=no])]) if test "$ac_cv_broken_nice" = yes then AC_DEFINE(HAVE_BROKEN_NICE, 1, [Define if nice() returns success/failure instead of the new priority.]) fi AC_CACHE_CHECK([for broken poll()], [ac_cv_broken_poll], AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include int main(void) { struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 }; int poll_test; close (42); poll_test = poll(&poll_struct, 1, 0); if (poll_test < 0) return 0; else if (poll_test == 0 && poll_struct.revents != POLLNVAL) return 0; else return 1; } ]])], [ac_cv_broken_poll=yes], [ac_cv_broken_poll=no], [ac_cv_broken_poll=no])) if test "$ac_cv_broken_poll" = yes then AC_DEFINE(HAVE_BROKEN_POLL, 1, [Define if poll() sets errno on invalid file descriptors.]) fi # check tzset(3) exists and works like we expect it to AC_CACHE_CHECK([for working tzset()], [ac_cv_working_tzset], [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #if HAVE_TZNAME extern char *tzname[]; #endif int main(void) { /* Note that we need to ensure that not only does tzset(3) do 'something' with localtime, but it works as documented in the library reference and as expected by the test suite. This includes making sure that tzname is set properly if tm->tm_zone does not exist since it is the alternative way of getting timezone info. Red Hat 6.2 doesn't understand the southern hemisphere after New Year's Day. */ time_t groundhogday = 1044144000; /* GMT-based */ time_t midyear = groundhogday + (365 * 24 * 3600 / 2); putenv("TZ=UTC+0"); tzset(); if (localtime(&groundhogday)->tm_hour != 0) exit(1); #if HAVE_TZNAME /* For UTC, tzname[1] is sometimes "", sometimes " " */ if (strcmp(tzname[0], "UTC") || (tzname[1][0] != 0 && tzname[1][0] != ' ')) exit(1); #endif putenv("TZ=EST+5EDT,M4.1.0,M10.5.0"); tzset(); if (localtime(&groundhogday)->tm_hour != 19) exit(1); #if HAVE_TZNAME if (strcmp(tzname[0], "EST") || strcmp(tzname[1], "EDT")) exit(1); #endif putenv("TZ=AEST-10AEDT-11,M10.5.0,M3.5.0"); tzset(); if (localtime(&groundhogday)->tm_hour != 11) exit(1); #if HAVE_TZNAME if (strcmp(tzname[0], "AEST") || strcmp(tzname[1], "AEDT")) exit(1); #endif #if HAVE_STRUCT_TM_TM_ZONE if (strcmp(localtime(&groundhogday)->tm_zone, "AEDT")) exit(1); if (strcmp(localtime(&midyear)->tm_zone, "AEST")) exit(1); #endif exit(0); } ]])], [ac_cv_working_tzset=yes], [ac_cv_working_tzset=no], [ac_cv_working_tzset=no])]) if test "$ac_cv_working_tzset" = yes then AC_DEFINE(HAVE_WORKING_TZSET, 1, [Define if tzset() actually switches the local timezone in a meaningful way.]) fi # Look for subsecond timestamps in struct stat AC_CACHE_CHECK([for tv_nsec in struct stat], [ac_cv_stat_tv_nsec], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ struct stat st; st.st_mtim.tv_nsec = 1; ]])], [ac_cv_stat_tv_nsec=yes], [ac_cv_stat_tv_nsec=no])) if test "$ac_cv_stat_tv_nsec" = yes then AC_DEFINE(HAVE_STAT_TV_NSEC, 1, [Define if you have struct stat.st_mtim.tv_nsec]) fi # Look for BSD style subsecond timestamps in struct stat AC_CACHE_CHECK([for tv_nsec2 in struct stat], [ac_cv_stat_tv_nsec2], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ struct stat st; st.st_mtimespec.tv_nsec = 1; ]])], [ac_cv_stat_tv_nsec2=yes], [ac_cv_stat_tv_nsec2=no])) if test "$ac_cv_stat_tv_nsec2" = yes then AC_DEFINE(HAVE_STAT_TV_NSEC2, 1, [Define if you have struct stat.st_mtimensec]) fi # first curses header check ac_save_cppflags="$CPPFLAGS" if test "$cross_compiling" = no; then CPPFLAGS="$CPPFLAGS -I/usr/include/ncursesw" fi AC_CHECK_HEADERS(curses.h ncurses.h) # On Solaris, term.h requires curses.h AC_CHECK_HEADERS(term.h,,,[ #ifdef HAVE_CURSES_H #include #endif ]) # On HP/UX 11.0, mvwdelch is a block with a return statement AC_CACHE_CHECK([whether mvwdelch is an expression], [ac_cv_mvwdelch_is_expression], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include ]], [[ int rtn; rtn = mvwdelch(0,0,0); ]])], [ac_cv_mvwdelch_is_expression=yes], [ac_cv_mvwdelch_is_expression=no])) if test "$ac_cv_mvwdelch_is_expression" = yes then AC_DEFINE(MVWDELCH_IS_EXPRESSION, 1, [Define if mvwdelch in curses.h is an expression.]) fi # Issue #25720: ncurses has introduced the NCURSES_OPAQUE symbol making opaque # structs since version 5.7. If the macro is defined as zero before including # [n]curses.h, ncurses will expose fields of the structs regardless of the # configuration. AC_CACHE_CHECK([whether WINDOW has _flags], [ac_cv_window_has_flags], AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #define NCURSES_OPAQUE 0 #include ]], [[ WINDOW *w; w->_flags = 0; ]])], [ac_cv_window_has_flags=yes], [ac_cv_window_has_flags=no])) if test "$ac_cv_window_has_flags" = yes then AC_DEFINE(WINDOW_HAS_FLAGS, 1, [Define if WINDOW in curses.h offers a field _flags.]) fi dnl PY_CHECK_CURSES_FUNC(FUNCTION) AC_DEFUN([PY_CHECK_CURSES_FUNC], [ AS_VAR_PUSHDEF([py_var], [ac_cv_lib_curses_$1]) AS_VAR_PUSHDEF([py_define], [HAVE_CURSES_]m4_toupper($1)) AC_CACHE_CHECK( [for curses function $1], [py_var], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [#include ], [ #ifndef $1 void *x=$1 #endif ])], [AS_VAR_SET([py_var], [yes])], [AS_VAR_SET([py_var], [no])])] ) AS_VAR_IF( [py_var], [yes], [AC_DEFINE([py_define], [1], [Define if you have the '$1' function.])]) AS_VAR_POPDEF([py_var]) AS_VAR_POPDEF([py_define]) ]) PY_CHECK_CURSES_FUNC([is_pad]) PY_CHECK_CURSES_FUNC([is_term_resized]) PY_CHECK_CURSES_FUNC([resize_term]) PY_CHECK_CURSES_FUNC([resizeterm]) PY_CHECK_CURSES_FUNC([immedok]) PY_CHECK_CURSES_FUNC([syncok]) PY_CHECK_CURSES_FUNC([wchgat]) PY_CHECK_CURSES_FUNC([filter]) PY_CHECK_CURSES_FUNC([has_key]) PY_CHECK_CURSES_FUNC([typeahead]) PY_CHECK_CURSES_FUNC([use_env]) CPPFLAGS=$ac_save_cppflags AC_MSG_NOTICE([checking for device files]) dnl NOTE: Inform user how to proceed with files when cross compiling. if test "x$cross_compiling" = xyes; then if test "${ac_cv_file__dev_ptmx+set}" != set; then AC_MSG_CHECKING([for /dev/ptmx]) AC_MSG_RESULT([not set]) AC_MSG_ERROR([set ac_cv_file__dev_ptmx to yes/no in your CONFIG_SITE file when cross compiling]) fi if test "${ac_cv_file__dev_ptc+set}" != set; then AC_MSG_CHECKING([for /dev/ptc]) AC_MSG_RESULT([not set]) AC_MSG_ERROR([set ac_cv_file__dev_ptc to yes/no in your CONFIG_SITE file when cross compiling]) fi fi AC_CHECK_FILE(/dev/ptmx, [], []) if test "x$ac_cv_file__dev_ptmx" = xyes; then AC_DEFINE(HAVE_DEV_PTMX, 1, [Define to 1 if you have the /dev/ptmx device file.]) fi AC_CHECK_FILE(/dev/ptc, [], []) if test "x$ac_cv_file__dev_ptc" = xyes; then AC_DEFINE(HAVE_DEV_PTC, 1, [Define to 1 if you have the /dev/ptc device file.]) fi if test $ac_sys_system = Darwin then LIBS="$LIBS -framework CoreFoundation" fi AC_CACHE_CHECK([for %zd printf() format support], ac_cv_have_size_t_format, [dnl AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SSIZE_T typedef ssize_t Py_ssize_t; #elif SIZEOF_VOID_P == SIZEOF_LONG typedef long Py_ssize_t; #else typedef int Py_ssize_t; #endif int main() { char buffer[256]; if(sprintf(buffer, "%zd", (size_t)123) < 0) return 1; if (strcmp(buffer, "123")) return 1; if (sprintf(buffer, "%zd", (Py_ssize_t)-123) < 0) return 1; if (strcmp(buffer, "-123")) return 1; return 0; } ]])], [ac_cv_have_size_t_format=yes], [ac_cv_have_size_t_format=no], [ac_cv_have_size_t_format="cross -- assuming yes" ])]) if test "$ac_cv_have_size_t_format" != no ; then AC_DEFINE(PY_FORMAT_SIZE_T, "z", [Define to printf format modifier for Py_ssize_t]) fi AC_CHECK_TYPE(socklen_t,, AC_DEFINE(socklen_t,int, [Define to `int' if does not define.]),[ #ifdef HAVE_SYS_TYPES_H #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif ]) AC_CACHE_CHECK([for broken mbstowcs], [ac_cv_broken_mbstowcs], AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include int main(void) { size_t len = -1; const char *str = "text"; len = mbstowcs(NULL, str, 0); return (len != 4); } ]])], [ac_cv_broken_mbstowcs=no], [ac_cv_broken_mbstowcs=yes], [ac_cv_broken_mbstowcs=no])) if test "$ac_cv_broken_mbstowcs" = yes then AC_DEFINE(HAVE_BROKEN_MBSTOWCS, 1, [Define if mbstowcs(NULL, "text", 0) does not return the number of wide chars that would be converted.]) fi # Check for --with-computed-gotos AC_MSG_CHECKING(for --with-computed-gotos) AC_ARG_WITH(computed-gotos, AS_HELP_STRING([--with-computed-gotos], [enable computed gotos in evaluation loop (enabled by default on supported compilers)]), [ if test "$withval" = yes then AC_DEFINE(USE_COMPUTED_GOTOS, 1, [Define if you want to use computed gotos in ceval.c.]) AC_MSG_RESULT(yes) fi if test "$withval" = no then AC_DEFINE(USE_COMPUTED_GOTOS, 0, [Define if you want to use computed gotos in ceval.c.]) AC_MSG_RESULT(no) fi ], [AC_MSG_RESULT(no value specified)]) AC_CACHE_CHECK([whether $CC supports computed gotos], [ac_cv_computed_gotos], AC_RUN_IFELSE([AC_LANG_SOURCE([[[ int main(int argc, char **argv) { static void *targets[1] = { &&LABEL1 }; goto LABEL2; LABEL1: return 0; LABEL2: goto *targets[0]; return 1; } ]]])], [ac_cv_computed_gotos=yes], [ac_cv_computed_gotos=no], [if test "${with_computed_gotos+set}" = set; then ac_cv_computed_gotos="$with_computed_gotos -- configured --with(out)-computed-gotos" else ac_cv_computed_gotos=no fi])) case "$ac_cv_computed_gotos" in yes*) AC_DEFINE(HAVE_COMPUTED_GOTOS, 1, [Define if the C compiler supports computed gotos.]) esac case $ac_sys_system in AIX*) AC_DEFINE(HAVE_BROKEN_PIPE_BUF, 1, [Define if the system reports an invalid PIPE_BUF value.]) ;; esac AC_SUBST(THREADHEADERS) for h in `(cd $srcdir;echo Python/thread_*.h)` do THREADHEADERS="$THREADHEADERS \$(srcdir)/$h" done AC_SUBST(SRCDIRS) SRCDIRS="\ Modules \ Modules/_blake2 \ Modules/_ctypes \ Modules/_decimal \ Modules/_decimal/libmpdec \ Modules/_io \ Modules/_multiprocessing \ Modules/_sha3 \ Modules/_sqlite \ Modules/_sre \ Modules/_xxtestfuzz \ Modules/cjkcodecs \ Modules/expat \ Objects \ Parser \ Programs \ Python \ Python/frozen_modules \ Python/deepfreeze" AC_MSG_CHECKING(for build directories) for dir in $SRCDIRS; do if test ! -d $dir; then mkdir $dir fi done AC_MSG_RESULT(done) # Availability of -O2: AC_CACHE_CHECK([for -O2], [ac_cv_compile_o2], [ saved_cflags="$CFLAGS" CFLAGS="-O2" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [ac_cv_compile_o2=yes], [ac_cv_compile_o2=no]) CFLAGS="$saved_cflags" ]) # _FORTIFY_SOURCE wrappers for memmove and bcopy are incorrect: # http://sourceware.org/ml/libc-alpha/2010-12/msg00009.html AC_MSG_CHECKING(for glibc _FORTIFY_SOURCE/memmove bug) saved_cflags="$CFLAGS" CFLAGS="-O2 -D_FORTIFY_SOURCE=2" if test "$ac_cv_compile_o2" = no; then CFLAGS="" fi AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include void foo(void *p, void *q) { memmove(p, q, 19); } int main(void) { char a[32] = "123456789000000000"; foo(&a[9], a); if (strcmp(a, "123456789123456789000000000") != 0) return 1; foo(a, &a[9]); if (strcmp(a, "123456789000000000") != 0) return 1; return 0; } ]])], [have_glibc_memmove_bug=no], [have_glibc_memmove_bug=yes], [have_glibc_memmove_bug=undefined]) CFLAGS="$saved_cflags" AC_MSG_RESULT($have_glibc_memmove_bug) if test "$have_glibc_memmove_bug" = yes; then AC_DEFINE(HAVE_GLIBC_MEMMOVE_BUG, 1, [Define if glibc has incorrect _FORTIFY_SOURCE wrappers for memmove and bcopy.]) fi if test "$ac_cv_gcc_asm_for_x87" = yes; then # Some versions of gcc miscompile inline asm: # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46491 # http://gcc.gnu.org/ml/gcc/2010-11/msg00366.html case $CC in *gcc*) AC_MSG_CHECKING(for gcc ipa-pure-const bug) saved_cflags="$CFLAGS" CFLAGS="-O2" AC_RUN_IFELSE([AC_LANG_SOURCE([[ __attribute__((noinline)) int foo(int *p) { int r; asm ( "movl \$6, (%1)\n\t" "xorl %0, %0\n\t" : "=r" (r) : "r" (p) : "memory" ); return r; } int main(void) { int p = 8; if ((foo(&p) ? : p) != 6) return 1; return 0; } ]])], [have_ipa_pure_const_bug=no], [have_ipa_pure_const_bug=yes], [have_ipa_pure_const_bug=undefined]) CFLAGS="$saved_cflags" AC_MSG_RESULT($have_ipa_pure_const_bug) if test "$have_ipa_pure_const_bug" = yes; then AC_DEFINE(HAVE_IPA_PURE_CONST_BUG, 1, [Define if gcc has the ipa-pure-const bug.]) fi ;; esac fi # Check for stdatomic.h AC_CACHE_CHECK([for stdatomic.h], [ac_cv_header_stdatomic_h], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include atomic_int int_var; atomic_uintptr_t uintptr_var; int main(void) { atomic_store_explicit(&int_var, 5, memory_order_relaxed); atomic_store_explicit(&uintptr_var, 0, memory_order_relaxed); int loaded_value = atomic_load_explicit(&int_var, memory_order_seq_cst); return 0; } ]]) ],[ac_cv_header_stdatomic_h=yes],[ac_cv_header_stdatomic_h=no]) ]) AS_VAR_IF([ac_cv_header_stdatomic_h], [yes], [ AC_DEFINE(HAVE_STD_ATOMIC, 1, [Has stdatomic.h with atomic_int and atomic_uintptr_t]) ]) # Check for GCC >= 4.7 and clang __atomic builtin functions AC_CACHE_CHECK([for builtin __atomic_load_n and __atomic_store_n functions], [ac_cv_builtin_atomic], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ int val; int main(void) { __atomic_store_n(&val, 1, __ATOMIC_SEQ_CST); (void)__atomic_load_n(&val, __ATOMIC_SEQ_CST); return 0; } ]]) ],[ac_cv_builtin_atomic=yes],[ac_cv_builtin_atomic=no]) ]) AS_VAR_IF([ac_cv_builtin_atomic], [yes], [ AC_DEFINE(HAVE_BUILTIN_ATOMIC, 1, [Has builtin __atomic_load_n() and __atomic_store_n() functions]) ]) # ensurepip option AC_MSG_CHECKING(for ensurepip) AC_ARG_WITH(ensurepip, [AS_HELP_STRING([--with-ensurepip@<:@=install|upgrade|no@:>@], ["install" or "upgrade" using bundled pip (default is upgrade)])], [], [ AS_CASE([$ac_sys_system], [Emscripten], [with_ensurepip=no], [WASI], [with_ensurepip=no], [with_ensurepip=upgrade] ) ]) AS_CASE($with_ensurepip, [yes|upgrade],[ENSUREPIP=upgrade], [install],[ENSUREPIP=install], [no],[ENSUREPIP=no], [AC_MSG_ERROR([--with-ensurepip=upgrade|install|no])]) AC_MSG_RESULT($ENSUREPIP) AC_SUBST(ENSUREPIP) # check if the dirent structure of a d_type field and DT_UNKNOWN is defined AC_CACHE_CHECK([if the dirent structure of a d_type field], [ac_cv_dirent_d_type], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include int main(void) { struct dirent entry; return entry.d_type == DT_UNKNOWN; } ]]) ],[ac_cv_dirent_d_type=yes],[ac_cv_dirent_d_type=no]) ]) AS_VAR_IF([ac_cv_dirent_d_type], [yes], [ AC_DEFINE(HAVE_DIRENT_D_TYPE, 1, [Define to 1 if the dirent structure has a d_type field]) ]) # check if the Linux getrandom() syscall is available AC_CACHE_CHECK([for the Linux getrandom() syscall], [ac_cv_getrandom_syscall], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include #include #include #include int main(void) { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = GRND_NONBLOCK; /* ignore the result, Python checks for ENOSYS and EAGAIN at runtime */ (void)syscall(SYS_getrandom, buffer, buflen, flags); return 0; } ]]) ],[ac_cv_getrandom_syscall=yes],[ac_cv_getrandom_syscall=no]) ]) AS_VAR_IF([ac_cv_getrandom_syscall], [yes], [ AC_DEFINE(HAVE_GETRANDOM_SYSCALL, 1, [Define to 1 if the Linux getrandom() syscall is available]) ]) # check if the getrandom() function is available # the test was written for the Solaris function of AC_CACHE_CHECK([for the getrandom() function], [ac_cv_func_getrandom], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE([[ #include #include int main(void) { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = 0; /* ignore the result, Python checks for ENOSYS at runtime */ (void)getrandom(buffer, buflen, flags); return 0; } ]]) ],[ac_cv_func_getrandom=yes],[ac_cv_func_getrandom=no]) ]) AS_VAR_IF([ac_cv_func_getrandom], [yes], [ AC_DEFINE(HAVE_GETRANDOM, 1, [Define to 1 if the getrandom() function is available]) ]) # checks for POSIX shared memory, used by Modules/_multiprocessing/posixshmem.c # shm_* may only be available if linking against librt POSIXSHMEM_CFLAGS='-I$(srcdir)/Modules/_multiprocessing' WITH_SAVE_ENV([ AC_SEARCH_LIBS([shm_open], [rt]) AS_VAR_IF([ac_cv_search_shm_open], [-lrt], [POSIXSHMEM_LIBS="-lrt"]) dnl Temporarily override ac_includes_default for AC_CHECK_FUNCS below. _SAVE_VAR([ac_includes_default]) ac_includes_default="\ ${ac_includes_default} #ifndef __cplusplus # ifdef HAVE_SYS_MMAN_H # include # endif #endif " AC_CHECK_FUNCS([shm_open shm_unlink], [have_posix_shmem=yes], [have_posix_shmem=no]) _RESTORE_VAR([ac_includes_default]) ]) # Check for usable OpenSSL AX_CHECK_OPENSSL([have_openssl=yes],[have_openssl=no]) # rpath to libssl and libcrypto AS_VAR_IF([GNULD], [yes], [ rpath_arg="-Wl,--enable-new-dtags,-rpath=" ], [ rpath_arg="-Wl,-rpath=" ]) AC_MSG_CHECKING(for --with-openssl-rpath) AC_ARG_WITH(openssl-rpath, AS_HELP_STRING([--with-openssl-rpath=@<:@DIR|auto|no@:>@], [Set runtime library directory (rpath) for OpenSSL libraries, no (default): don't set rpath, auto: auto-detect rpath from --with-openssl and pkg-config, DIR: set an explicit rpath ]), [], [with_openssl_rpath=no] ) AS_CASE($with_openssl_rpath, [auto|yes], [ OPENSSL_RPATH=auto dnl look for linker directories for arg in "$OPENSSL_LDFLAGS"; do AS_CASE([$arg], [-L*], [OPENSSL_LDFLAGS_RPATH="$OPENSSL_LDFLAGS_RPATH ${rpath_arg}$(echo $arg | cut -c3-)"] ) done ], [no], [OPENSSL_RPATH=], [AS_IF( [test -d "$with_openssl_rpath"], [ OPENSSL_RPATH="$with_openssl_rpath" OPENSSL_LDFLAGS_RPATH="${rpath_arg}$with_openssl_rpath" ], AC_MSG_ERROR([--with-openssl-rpath "$with_openssl_rpath" is not a directory])) ] ) AC_MSG_RESULT($OPENSSL_RPATH) AC_SUBST([OPENSSL_RPATH]) # This static linking is NOT OFFICIALLY SUPPORTED and not advertised. # Requires static OpenSSL build with position-independent code. Some features # like DSO engines or external OSSL providers don't work. Only tested with GCC # and clang on X86_64. AS_VAR_IF([PY_UNSUPPORTED_OPENSSL_BUILD], [static], [ AC_MSG_CHECKING([for unsupported static openssl build]) new_OPENSSL_LIBS= for arg in $OPENSSL_LIBS; do AS_CASE([$arg], [-l*], [ libname=$(echo $arg | cut -c3-) new_OPENSSL_LIBS="$new_OPENSSL_LIBS -l:lib${libname}.a -Wl,--exclude-libs,lib${libname}.a" ], [new_OPENSSL_LIBS="$new_OPENSSL_LIBS $arg"] ) done dnl include libz for OpenSSL build flavors with compression support OPENSSL_LIBS="$new_OPENSSL_LIBS $ZLIB_LIBS" AC_MSG_RESULT([$OPENSSL_LIBS]) ]) dnl AX_CHECK_OPENSSL does not export libcrypto-only libs LIBCRYPTO_LIBS= for arg in $OPENSSL_LIBS; do AS_CASE([$arg], [-l*ssl*|-Wl*ssl*], [], [LIBCRYPTO_LIBS="$LIBCRYPTO_LIBS $arg"] ) done # check if OpenSSL libraries work as expected WITH_SAVE_ENV([ LIBS="$LIBS $OPENSSL_LIBS" CFLAGS="$CFLAGS $OPENSSL_INCLUDES" LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH" AC_CACHE_CHECK([whether OpenSSL provides required ssl module APIs], [ac_cv_working_openssl_ssl], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include #if OPENSSL_VERSION_NUMBER < 0x10101000L #error "OpenSSL >= 1.1.1 is required" #endif static void keylog_cb(const SSL *ssl, const char *line) {} ], [ SSL_CTX *ctx = SSL_CTX_new(TLS_client_method()); SSL_CTX_set_keylog_callback(ctx, keylog_cb); SSL *ssl = SSL_new(ctx); X509_VERIFY_PARAM *param = SSL_get0_param(ssl); X509_VERIFY_PARAM_set1_host(param, "python.org", 0); SSL_free(ssl); SSL_CTX_free(ctx); ])], [ac_cv_working_openssl_ssl=yes], [ac_cv_working_openssl_ssl=no]) ]) ]) WITH_SAVE_ENV([ LIBS="$LIBS $LIBCRYPTO_LIBS" CFLAGS="$CFLAGS $OPENSSL_INCLUDES" LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH" AC_CACHE_CHECK([whether OpenSSL provides required hashlib module APIs], [ac_cv_working_openssl_hashlib], [ AC_LINK_IFELSE([AC_LANG_PROGRAM([ #include #include #if OPENSSL_VERSION_NUMBER < 0x10101000L #error "OpenSSL >= 1.1.1 is required" #endif ], [ OBJ_nid2sn(NID_md5); OBJ_nid2sn(NID_sha1); OBJ_nid2sn(NID_sha3_512); OBJ_nid2sn(NID_blake2b512); EVP_PBE_scrypt(NULL, 0, NULL, 0, 2, 8, 1, 0, NULL, 0); ])], [ac_cv_working_openssl_hashlib=yes], [ac_cv_working_openssl_hashlib=no]) ]) ]) # ssl module default cipher suite string AH_TEMPLATE(PY_SSL_DEFAULT_CIPHERS, [Default cipher suites list for ssl module. 1: Python's preferred selection, 2: leave OpenSSL defaults untouched, 0: custom string]) AH_TEMPLATE(PY_SSL_DEFAULT_CIPHER_STRING, [Cipher suite string for PY_SSL_DEFAULT_CIPHERS=0] ) AC_MSG_CHECKING(for --with-ssl-default-suites) AC_ARG_WITH(ssl-default-suites, AS_HELP_STRING([--with-ssl-default-suites=@<:@python|openssl|STRING@:>@], [override default cipher suites string, python: use Python's preferred selection (default), openssl: leave OpenSSL's defaults untouched, STRING: use a custom string, python and STRING also set TLS 1.2 as minimum TLS version]), [ AC_MSG_RESULT($withval) case "$withval" in python) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1) ;; openssl) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 2) ;; *) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 0) AC_DEFINE_UNQUOTED(PY_SSL_DEFAULT_CIPHER_STRING, "$withval") ;; esac ], [ AC_MSG_RESULT(python) AC_DEFINE(PY_SSL_DEFAULT_CIPHERS, 1) ]) # builtin hash modules default_hashlib_hashes="md5,sha1,sha256,sha512,sha3,blake2" AC_DEFINE([PY_BUILTIN_HASHLIB_HASHES], [], [enabled builtin hash modules] ) AC_MSG_CHECKING(for --with-builtin-hashlib-hashes) AC_ARG_WITH(builtin-hashlib-hashes, AS_HELP_STRING([--with-builtin-hashlib-hashes=md5,sha1,sha256,sha512,sha3,blake2], [builtin hash modules, md5, sha1, sha256, sha512, sha3 (with shake), blake2]), [ AS_CASE([$with_builtin_hashlib_hashes], [yes], [with_builtin_hashlib_hashes=$default_hashlib_hashes], [no], [with_builtin_hashlib_hashes=""] ) ], [with_builtin_hashlib_hashes=$default_hashlib_hashes]) AC_MSG_RESULT($with_builtin_hashlib_hashes) AC_DEFINE_UNQUOTED(PY_BUILTIN_HASHLIB_HASHES, "$with_builtin_hashlib_hashes") as_save_IFS=$IFS IFS=, for builtin_hash in $with_builtin_hashlib_hashes; do AS_CASE($builtin_hash, [md5], [with_builtin_md5=yes], [sha1], [with_builtin_sha1=yes], [sha256], [with_builtin_sha256=yes], [sha512], [with_builtin_sha512=yes], [sha3], [with_builtin_sha3=yes], [blake2], [with_builtin_blake2=yes] ) done IFS=$as_save_IFS dnl libb2 for blake2. _blake2 module falls back to vendored copy. AS_VAR_IF([with_builtin_blake2], [yes], [ PKG_CHECK_MODULES([LIBB2], [libb2], [ have_libb2=yes AC_DEFINE([HAVE_LIBB2], [1], [Define to 1 if you want to build _blake2 module with libb2]) ], [have_libb2=no]) ]) # Check whether to disable test modules. Once set, setup.py will not build # test extension modules and "make install" will not install test suites. AC_MSG_CHECKING([for --disable-test-modules]) AC_ARG_ENABLE([test-modules], [AS_HELP_STRING([--disable-test-modules], [don't build nor install test modules])], [ AS_VAR_IF([enable_test_modules], [yes], [TEST_MODULES=yes], [TEST_MODULES=no]) ], [ AS_CASE([$ac_sys_system/$ac_sys_emscripten_target], [Emscripten/browser*], [TEST_MODULES=no], [TEST_MODULES=yes] ) ]) AC_MSG_RESULT([$TEST_MODULES]) AC_SUBST([TEST_MODULES]) AC_DEFUN([PY_STDLIB_MOD_SET_NA], [ m4_foreach([mod], [$@], [ AS_VAR_SET([py_cv_module_]mod, [n/a])]) ]) # stdlib not available dnl Modules that are not available on some platforms dnl AIX has shadow passwords, but access is not via getspent() dnl VxWorks does not provide crypt() function AS_CASE([$ac_sys_system], [AIX], [PY_STDLIB_MOD_SET_NA([_scproxy], [spwd])], [VxWorks*], [PY_STDLIB_MOD_SET_NA([_scproxy], [_crypt], [termios], [grp])], [Darwin], [PY_STDLIB_MOD_SET_NA([ossaudiodev], [spwd])], [CYGWIN*], [PY_STDLIB_MOD_SET_NA([_scproxy], [nis])], [QNX*], [PY_STDLIB_MOD_SET_NA([_scproxy], [nis])], [FreeBSD*], [PY_STDLIB_MOD_SET_NA([_scproxy], [spwd])], [Emscripten|WASI], [ dnl subprocess and multiprocessing are not supported (no fork syscall). dnl curses and tkinter user interface are not available. dnl dbm and gdbm aren't available, too. dnl Emscripten and WASI provide only stubs for pwd, grp APIs. dnl resource functions (get/setrusage) are stubs, too. PY_STDLIB_MOD_SET_NA( [_curses], [_curses_panel], [_dbm], [_gdbm], [_multiprocessing], [_posixshmem], [_posixsubprocess], [_scproxy], [_tkinter], [_xxsubinterpreters], [grp], [nis], [ossaudiodev], [pwd], [resource], [spwd], [syslog], ) AS_CASE([$ac_sys_system/$ac_sys_emscripten_target], [Emscripten/browser*], [ dnl These modules are not particularly useful in browsers. PY_STDLIB_MOD_SET_NA( [fcntl], [readline], [termios], ) ], [Emscripten/node*], [], [WASI/*], [ dnl WASI SDK 15.0 does not support file locking, mmap, and more. PY_STDLIB_MOD_SET_NA( [_ctypes_test], [fcntl], [mmap], [termios], ) ] ) ], [PY_STDLIB_MOD_SET_NA([_scproxy])] ) dnl AC_MSG_NOTICE([m4_set_list([_PY_STDLIB_MOD_SET_NA])]) dnl Default value for Modules/Setup.stdlib build type AS_CASE([$host_cpu], [wasm32|wasm64], [MODULE_BUILDTYPE=static], [MODULE_BUILDTYPE=${MODULE_BUILDTYPE:-shared}] ) AC_SUBST([MODULE_BUILDTYPE]) dnl Use Modules/Setup.stdlib as additional provider? AC_MSG_CHECKING([for additional Modules/Setup files]) AS_CASE([$ac_sys_system], [Emscripten], [MODULES_SETUP_STDLIB=Modules/Setup.stdlib], [WASI], [MODULES_SETUP_STDLIB=Modules/Setup.stdlib], [MODULES_SETUP_STDLIB=] ) AC_MSG_RESULT([$MODULES_SETUP_STDLIB]) AC_SUBST([MODULES_SETUP_STDLIB]) dnl _MODULE_BLOCK_ADD([VAR], [VALUE]) dnl internal: adds $1=quote($2) to MODULE_BLOCK AC_DEFUN([_MODULE_BLOCK_ADD], [AS_VAR_APPEND([MODULE_BLOCK], ["$1=_AS_QUOTE([$2])$as_nl"])]) MODULE_BLOCK= dnl Check for stdlib extension modules dnl PY_STDLIB_MOD([NAME], [ENABLED-TEST], [SUPPORTED-TEST], [CFLAGS], [LDFLAGS]) dnl sets MODULE_$NAME_STATE based on PY_STDLIB_MOD_SET_NA(), ENABLED-TEST, dnl and SUPPORTED_TEST. ENABLED-TEST and SUPPORTED-TEST default to true if dnl empty. dnl n/a: marked unavailable on platform by PY_STDLIB_MOD_SET_NA() dnl yes: enabled and supported dnl missing: enabled and not supported dnl disabled: not enabled dnl sets MODULE_$NAME_CFLAGS and MODULE_$NAME_LDFLAGS AC_DEFUN([PY_STDLIB_MOD], [ AC_MSG_CHECKING([for stdlib extension module $1]) m4_pushdef([modcond], [MODULE_]m4_toupper([$1]))dnl m4_pushdef([modstate], [py_cv_module_$1])dnl dnl Check if module has been disabled by PY_STDLIB_MOD_SET_NA() AS_IF([test "$modstate" != "n/a"], [ AS_IF(m4_ifblank([$2], [true], [$2]), [AS_IF([m4_ifblank([$3], [true], [$3])], [modstate=yes], [modstate=missing])], [modstate=disabled]) ]) _MODULE_BLOCK_ADD(modcond[_STATE], [$modstate]) AS_VAR_IF([modstate], [yes], [ m4_ifblank([$4], [], [_MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_CFLAGS], [$4])]) m4_ifblank([$5], [], [_MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_LDFLAGS], [$5])]) ]) AM_CONDITIONAL(modcond, [test "$modstate" = yes]) AC_MSG_RESULT([$modstate]) m4_popdef([modcond])dnl m4_popdef([modstate])dnl ]) dnl Define simple stdlib extension module dnl Always enable unless the module is disabled by PY_STDLIB_MOD_SET_NA dnl PY_STDLIB_MOD_SIMPLE([NAME], [CFLAGS], [LDFLAGS]) dnl cflags and ldflags are optional AC_DEFUN([PY_STDLIB_MOD_SIMPLE], [ m4_pushdef([modcond], [MODULE_]m4_toupper([$1]))dnl m4_pushdef([modstate], [py_cv_module_$1])dnl dnl Check if module has been disabled by PY_STDLIB_MOD_SET_NA() AS_IF([test "$modstate" != "n/a"], [modstate=yes]) AM_CONDITIONAL(modcond, [test "$modstate" = yes]) _MODULE_BLOCK_ADD(modcond[_STATE], [$modstate]) AS_VAR_IF([modstate], [yes], [ m4_ifblank([$2], [], [_MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_CFLAGS], [$2])]) m4_ifblank([$3], [], [_MODULE_BLOCK_ADD([MODULE_]m4_toupper([$1])[_LDFLAGS], [$3])]) ]) m4_popdef([modcond])dnl m4_popdef([modstate])dnl ]) dnl static modules in Modules/Setup.bootstrap PY_STDLIB_MOD_SIMPLE([_io], [-I\$(srcdir)/Modules/_io], []) PY_STDLIB_MOD_SIMPLE([time], [], [$TIMEMODULE_LIB]) dnl always enabled extension modules PY_STDLIB_MOD_SIMPLE([array]) PY_STDLIB_MOD_SIMPLE([_asyncio]) PY_STDLIB_MOD_SIMPLE([_bisect]) PY_STDLIB_MOD_SIMPLE([_contextvars]) PY_STDLIB_MOD_SIMPLE([_csv]) PY_STDLIB_MOD_SIMPLE([_heapq]) PY_STDLIB_MOD_SIMPLE([_json]) PY_STDLIB_MOD_SIMPLE([_lsprof]) PY_STDLIB_MOD_SIMPLE([_opcode]) PY_STDLIB_MOD_SIMPLE([_pickle]) PY_STDLIB_MOD_SIMPLE([_posixsubprocess]) PY_STDLIB_MOD_SIMPLE([_queue]) PY_STDLIB_MOD_SIMPLE([_random]) PY_STDLIB_MOD_SIMPLE([select]) PY_STDLIB_MOD_SIMPLE([_struct]) PY_STDLIB_MOD_SIMPLE([_typing]) PY_STDLIB_MOD_SIMPLE([_xxsubinterpreters]) PY_STDLIB_MOD_SIMPLE([_zoneinfo]) dnl multiprocessing modules PY_STDLIB_MOD([_multiprocessing], [], [test "$ac_cv_func_sem_unlink" = "yes"], [-I\$(srcdir)/Modules/_multiprocessing]) PY_STDLIB_MOD([_posixshmem], [], [test "$have_posix_shmem" = "yes"], [$POSIXSHMEM_CFLAGS], [$POSIXSHMEM_LIBS]) dnl needs libm PY_STDLIB_MOD_SIMPLE([audioop], [], [$LIBM]) PY_STDLIB_MOD_SIMPLE([_statistics], [], [$LIBM]) PY_STDLIB_MOD_SIMPLE([cmath], [], [$LIBM]) PY_STDLIB_MOD_SIMPLE([math], [], [$LIBM]) dnl needs libm and on some platforms librt PY_STDLIB_MOD_SIMPLE([_datetime], [], [$TIMEMODULE_LIB $LIBM]) dnl modules with some unix dependencies PY_STDLIB_MOD([fcntl], [], [test "$ac_cv_header_sys_ioctl_h" = "yes" -a "$ac_cv_header_fcntl_h" = "yes"], [], [$FCNTL_LIBS]) PY_STDLIB_MOD([mmap], [], [test "$ac_cv_header_sys_mman_h" = "yes" -a "$ac_cv_header_sys_stat_h" = "yes"]) PY_STDLIB_MOD([_socket], [], m4_flatten([test "$ac_cv_header_sys_socket_h" = "yes" -a "$ac_cv_header_sys_types_h" = "yes" -a "$ac_cv_header_netinet_in_h" = "yes"])) dnl platform specific extensions PY_STDLIB_MOD([grp], [], [test "$ac_cv_func_getgrgid" = yes -o "$ac_cv_func_getgrgid_r" = yes]) PY_STDLIB_MOD([ossaudiodev], [], [test "$ac_cv_header_linux_soundcard_h" = yes -o "$ac_cv_header_sys_soundcard_h" = yes], [], [$OSSAUDIODEV_LIBS]) PY_STDLIB_MOD([pwd], [], [test "$ac_cv_func_getpwuid" = yes -o "$ac_cv_func_getpwuid_r" = yes]) PY_STDLIB_MOD([resource], [], [test "$ac_cv_header_sys_resource_h" = yes]) PY_STDLIB_MOD([_scproxy], [test "$ac_sys_system" = "Darwin"], [], [], [-framework SystemConfiguration -framework CoreFoundation]) PY_STDLIB_MOD([spwd], [], [test "$ac_cv_func_getspent" = yes -o "$ac_cv_func_getspnam" = yes]) PY_STDLIB_MOD([syslog], [], [test "$ac_cv_header_syslog_h" = yes]) PY_STDLIB_MOD([termios], [], [test "$ac_cv_header_termios_h" = yes]) dnl _elementtree loads libexpat via CAPI hook in pyexpat PY_STDLIB_MOD([pyexpat], [], [], [$LIBEXPAT_CFLAGS], [$LIBEXPAT_LDFLAGS]) PY_STDLIB_MOD([_elementtree], [], [], [$LIBEXPAT_CFLAGS], []) PY_STDLIB_MOD_SIMPLE([_codecs_cn]) PY_STDLIB_MOD_SIMPLE([_codecs_hk]) PY_STDLIB_MOD_SIMPLE([_codecs_iso2022]) PY_STDLIB_MOD_SIMPLE([_codecs_jp]) PY_STDLIB_MOD_SIMPLE([_codecs_kr]) PY_STDLIB_MOD_SIMPLE([_codecs_tw]) PY_STDLIB_MOD_SIMPLE([_multibytecodec]) PY_STDLIB_MOD_SIMPLE([unicodedata]) dnl By default we always compile these even when OpenSSL is available dnl (issue #14693). The modules are small. PY_STDLIB_MOD([_md5], [test "$with_builtin_md5" = yes]) PY_STDLIB_MOD([_sha1], [test "$with_builtin_sha1" = yes]) PY_STDLIB_MOD([_sha256], [test "$with_builtin_sha256" = yes]) PY_STDLIB_MOD([_sha512], [test "$with_builtin_sha512" = yes]) PY_STDLIB_MOD([_sha3], [test "$with_builtin_sha3" = yes]) PY_STDLIB_MOD([_blake2], [test "$with_builtin_blake2" = yes], [], [$LIBB2_CFLAGS], [$LIBB2_LIBS]) PY_STDLIB_MOD([_crypt], [], [test "$ac_cv_crypt_crypt" = yes], [$LIBCRYPT_CFLAGS], [$LIBCRYPT_LIBS]) dnl PY_STDLIB_MOD([_ctypes], [], [], [], []) dnl PY_STDLIB_MOD([_curses], [], [], [], []) dnl PY_STDLIB_MOD([_curses_panel], [], [], [], []) PY_STDLIB_MOD([_decimal], [], [], [$LIBMPDEC_CFLAGS], [$LIBMPDEC_LDFLAGS]) dnl PY_STDLIB_MOD([_dbm], [], [], [], []) PY_STDLIB_MOD([_gdbm], [test "$have_gdbm_dbmliborder" = yes], [test "$have_gdbm" = yes], [$GDBM_CFLAGS], [$GDBM_LIBS]) PY_STDLIB_MOD([nis], [], [test "$have_nis" = yes -a "$ac_cv_header_rpc_rpc_h" = yes], [$LIBNSL_CFLAGS], [$LIBNSL_LIBS]) dnl PY_STDLIB_MOD([readline], [], [], [], []) PY_STDLIB_MOD([_sqlite3], [test "$have_sqlite3" = "yes"], [test "$have_supported_sqlite3" = "yes"], [$LIBSQLITE3_CFLAGS], [$LIBSQLITE3_LIBS]) PY_STDLIB_MOD([_tkinter], [], [test "$have_tcltk" = "yes"], [$TCLTK_CFLAGS], [$TCLTK_LIBS]) PY_STDLIB_MOD([_uuid], [], [test "$have_uuid" = "yes"], [$LIBUUID_CFLAGS], [$LIBUUID_LIBS]) dnl compression libs PY_STDLIB_MOD([zlib], [], [test "$have_zlib" = yes], [$ZLIB_CFLAGS], [$ZLIB_LIBS]) dnl binascii can use zlib for optimized crc32. PY_STDLIB_MOD_SIMPLE([binascii], [$BINASCII_CFLAGS], [$BINASCII_LIBS]) PY_STDLIB_MOD([_bz2], [], [test "$have_bzip2" = yes], [$BZIP2_CFLAGS], [$BZIP2_LIBS]) PY_STDLIB_MOD([_lzma], [], [test "$have_liblzma" = yes], [$LIBLZMA_CFLAGS], [$LIBLZMA_LIBS]) dnl OpenSSL bindings PY_STDLIB_MOD([_ssl], [], [test "$ac_cv_working_openssl_ssl" = yes], [$OPENSSL_INCLUDES], [$OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH $OPENSSL_LIBS]) PY_STDLIB_MOD([_hashlib], [], [test "$ac_cv_working_openssl_hashlib" = yes], [$OPENSSL_INCLUDES], [$OPENSSL_LDFLAGS $OPENSSL_LDFLAGS_RPATH $LIBCRYPTO_LIBS]) dnl test modules PY_STDLIB_MOD([_testcapi], [test "$TEST_MODULES" = yes]) PY_STDLIB_MOD([_testclinic], [test "$TEST_MODULES" = yes]) PY_STDLIB_MOD([_testinternalcapi], [test "$TEST_MODULES" = yes]) PY_STDLIB_MOD([_testbuffer], [test "$TEST_MODULES" = yes]) PY_STDLIB_MOD([_testimportmultiple], [test "$TEST_MODULES" = yes], [test "$ac_cv_func_dlopen" = yes]) PY_STDLIB_MOD([_testmultiphase], [test "$TEST_MODULES" = yes], [test "$ac_cv_func_dlopen" = yes]) PY_STDLIB_MOD([_xxtestfuzz], [test "$TEST_MODULES" = yes]) PY_STDLIB_MOD([_ctypes_test], [test "$TEST_MODULES" = yes], [test "$ac_cv_func_dlopen" = yes], [], [-lm]) dnl Limited API template modules. dnl The limited C API is not compatible with the Py_TRACE_REFS macro. dnl Emscripten does not support shared libraries yet. PY_STDLIB_MOD([xxlimited], [test "$with_trace_refs" = "no"], [test "$ac_cv_func_dlopen" = yes]) PY_STDLIB_MOD([xxlimited_35], [test "$with_trace_refs" = "no"], [test "$ac_cv_func_dlopen" = yes]) # substitute multiline block, must come after last PY_STDLIB_MOD() AC_SUBST([MODULE_BLOCK]) # generate output files AC_CONFIG_FILES(Makefile.pre Misc/python.pc Misc/python-embed.pc Misc/python-config.sh) AC_CONFIG_FILES([Modules/Setup.bootstrap Modules/Setup.stdlib]) AC_CONFIG_FILES([Modules/ld_so_aix], [chmod +x Modules/ld_so_aix]) AC_OUTPUT AC_MSG_NOTICE([creating Modules/Setup.local]) if test ! -f Modules/Setup.local then echo "# Edit this file for local setup changes" >Modules/Setup.local fi AC_MSG_NOTICE([creating Makefile]) $SHELL $srcdir/Modules/makesetup -c $srcdir/Modules/config.c.in \ -s Modules \ Modules/Setup.local $MODULES_SETUP_STDLIB Modules/Setup.bootstrap $srcdir/Modules/Setup mv config.c Modules if test -z "$PKG_CONFIG"; then AC_MSG_WARN([pkg-config is missing. Some dependencies may not be detected correctly.]) fi if test "$Py_OPT" = 'false' -a "$Py_DEBUG" != 'true'; then AC_MSG_NOTICE([ If you want a release build with all stable optimizations active (PGO, etc), please run ./configure --enable-optimizations ]) fi AS_VAR_IF([PY_SUPPORT_TIER], [0], [AC_MSG_WARN([ Platform "$host" with compiler "$ac_cv_cc_name" is not supported by the CPython core team, see https://peps.python.org/pep-0011/ for more information. ])])