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boinc/m4/sah_select_bitness.m4

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New autoconf macros: SAH_CHECK_LIB: Like AC_CHECK_LIB(), except it checks STATIC_LIB_LIST for libraries that should be linked statically. Static libraries are attempted to be linked with fully qualified path. If that fails, the static flags (-Wl,-Bstatic) are used. If no static library is found, the library is linked dynamically. SAH_STATICIZE_LDFLAGS: Goes through a given set of LDFLAGS and determines with libraries should be linked statically based upon STATIC_LIB_LIST, then calls SAH_CHECK_LIB on every library. SAH_DEFAULT_BITNESS: On architectures that support both 32 and 64 bit executables, this determines the current default model (including any CFLAGS settings). SAH_OPTION_BITNESS: Sets up a configure option to set the compiler -m64 or -m32 (or equivalent) flags for 32/64 bit compilation. svn path=/trunk/boinc/; revision=5957
2005-04-28 21:42:05 +00:00
AC_DEFUN([SAH_DEFAULT_BITNESS],[
Clean up SAH_DEFAULT_BITNESS
2021-01-21 15:35:13 +00:00
if test -z "${COMPILER_MODEL_BITS}"; then
AC_LANG_PUSH([C])
AC_MSG_CHECKING([default bitness of C compiler])
echo "int main() { return 0; }" >conftest.$ac_ext
AC_REQUIRE_CPP
${CC} ${CFLAGS} ${CPPFLAGS} -fno-lto -c conftest.$ac_ext 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD
COMPILER_MODEL_BITS=32
if test -f conftest.${OBJEXT}; then
if test -n "$(${OBJDUMP} --file-headers conftest.${OBJEXT} | grep 'file format' | grep 64)" -o -n "$(file conftest.${OBJEXT} | grep -i 64-bit)"; then
COMPILER_MODEL_BITS=64
#else
#if test -n "$(${OBJDUMP} --file-headers conftest.${OBJEXT} | grep 'file format' | grep 16)"; then
#COMPILER_MODEL_BITS=16
#fi
fi
New autoconf macros: SAH_CHECK_LIB: Like AC_CHECK_LIB(), except it checks STATIC_LIB_LIST for libraries that should be linked statically. Static libraries are attempted to be linked with fully qualified path. If that fails, the static flags (-Wl,-Bstatic) are used. If no static library is found, the library is linked dynamically. SAH_STATICIZE_LDFLAGS: Goes through a given set of LDFLAGS and determines with libraries should be linked statically based upon STATIC_LIB_LIST, then calls SAH_CHECK_LIB on every library. SAH_DEFAULT_BITNESS: On architectures that support both 32 and 64 bit executables, this determines the current default model (including any CFLAGS settings). SAH_OPTION_BITNESS: Sets up a configure option to set the compiler -m64 or -m32 (or equivalent) flags for 32/64 bit compilation. svn path=/trunk/boinc/; revision=5957
2005-04-28 21:42:05 +00:00
fi
Clean up SAH_DEFAULT_BITNESS
2021-01-21 15:35:13 +00:00
/bin/rm conftest.$ac_ext conftest.${OBJEXT}
AC_MSG_RESULT([$COMPILER_MODEL_BITS])
AC_LANG_POP([C])
Add C++ bitness test in SAH_DEFAULT_BITNESS
2021-01-21 15:38:58 +00:00
AC_LANG_PUSH([C++])
AC_MSG_CHECKING([default bitness of C++ compiler])
echo "int main() { return 0; }" >conftest.$ac_ext
AC_REQUIRE_CPP
${CXX} ${CXXFLAGS} ${CPPFLAGS} -fno-lto -c conftest.$ac_ext 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD
if test -f conftest.${OBJEXT}; then
if test -n "$(${OBJDUMP} --file-headers conftest.${OBJEXT} | grep 'file format' | grep 64)" -o -n "$(file conftest.${OBJEXT} | grep -i 64-bit)"; then
if test "${COMPILER_MODEL_BITS}" != "64"; then
AC_MSG_ERROR([64 but not same as bitness in C])
fi
fi
fi
/bin/rm conftest.$ac_ext conftest.${OBJEXT}
AC_MSG_RESULT([$COMPILER_MODEL_BITS])
AC_LANG_POP([C++])
New autoconf macros: SAH_CHECK_LIB: Like AC_CHECK_LIB(), except it checks STATIC_LIB_LIST for libraries that should be linked statically. Static libraries are attempted to be linked with fully qualified path. If that fails, the static flags (-Wl,-Bstatic) are used. If no static library is found, the library is linked dynamically. SAH_STATICIZE_LDFLAGS: Goes through a given set of LDFLAGS and determines with libraries should be linked statically based upon STATIC_LIB_LIST, then calls SAH_CHECK_LIB on every library. SAH_DEFAULT_BITNESS: On architectures that support both 32 and 64 bit executables, this determines the current default model (including any CFLAGS settings). SAH_OPTION_BITNESS: Sets up a configure option to set the compiler -m64 or -m32 (or equivalent) flags for 32/64 bit compilation. svn path=/trunk/boinc/; revision=5957
2005-04-28 21:42:05 +00:00
fi
])
AC_DEFUN([SAH_SELECT_BITNESS],[
SAH_DEFAULT_BITNESS
Get SAH_DEFAULT_BITNESS first before testing
2021-01-21 15:45:14 +00:00
AC_LANG_PUSH(C)
New autoconf macros: SAH_CHECK_LIB: Like AC_CHECK_LIB(), except it checks STATIC_LIB_LIST for libraries that should be linked statically. Static libraries are attempted to be linked with fully qualified path. If that fails, the static flags (-Wl,-Bstatic) are used. If no static library is found, the library is linked dynamically. SAH_STATICIZE_LDFLAGS: Goes through a given set of LDFLAGS and determines with libraries should be linked statically based upon STATIC_LIB_LIST, then calls SAH_CHECK_LIB on every library. SAH_DEFAULT_BITNESS: On architectures that support both 32 and 64 bit executables, this determines the current default model (including any CFLAGS settings). SAH_OPTION_BITNESS: Sets up a configure option to set the compiler -m64 or -m32 (or equivalent) flags for 32/64 bit compilation. svn path=/trunk/boinc/; revision=5957
2005-04-28 21:42:05 +00:00
AC_MSG_CHECKING(Selecting $1 bit model)
echo "int main() { return 0; }" >conftest.$ac_ext
if test "$1" != "${COMPILER_MODEL_BITS}"
then
${CC} ${CFLAGS} ${CPPFLAGS} -m$1 -c conftest.$ac_ext >&5
if test -f conftest.${OBJEXT} ; then
if test -n "`file conftest.${OBJEXT} | grep -i $1-bit`"
then
CFLAGS="${CFLAGS} -m$1"
AC_MSG_RESULT(-m$1)
COMPILER_MODEL_BITS=$1
fi
AC_MSG_RESULT(failed)
fi
else
AC_MSG_RESULT(ok)
fi
AC_LANG_POP(C)
])
AC_DEFUN([SAH_OPTION_BITNESS],[
AC_ARG_ENABLE(bitness,
AC_HELP_STRING([--enable-bitness=(32,64)],
[enable 32 or 64 bit object/executable files]
),
[SAH_SELECT_BITNESS(${enableval})],
[SAH_DEFAULT_BITNESS]
)
])