mirror of https://github.com/BOINC/boinc.git
106 lines
3.8 KiB
Plaintext
106 lines
3.8 KiB
Plaintext
AC_DEFUN([SAH_DEFAULT_BITNESS],[
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if test -z "${COMPILER_MODEL_BITS}"; then
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AC_LANG_PUSH([C])
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AC_MSG_CHECKING([default bitness of C compiler])
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echo "int main() { return 0; }" >conftest.$ac_ext
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AC_REQUIRE_CPP
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${CC} ${CFLAGS} ${CPPFLAGS} -fno-lto -c conftest.$ac_ext 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD
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COMPILER_MODEL_BITS=32
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if test -f conftest.${OBJEXT}; then
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OBJDUMP_TEST="$(${OBJDUMP} --file-headers conftest.${OBJEXT} | grep 'file format')"
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FILE_TEST="$(file conftest.${OBJEXT})"
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if test -n "$(echo $OBJDUMP_TEST | grep 64)" -o -n "$(echo $FILE_TEST | grep -i 64-bit)"; then
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COMPILER_MODEL_BITS=64
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#else
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#if test -n "$(echo $OBJDUMP_TEST | grep 16)"; then
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#COMPILER_MODEL_BITS=16
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#fi
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fi
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fi
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/bin/rm -f conftest.$ac_ext conftest.${OBJEXT}
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AC_MSG_RESULT([$COMPILER_MODEL_BITS])
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AC_LANG_POP([C])
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AC_LANG_PUSH([C++])
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AC_MSG_CHECKING([default bitness of C++ compiler])
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echo "int main() { return 0; }" >conftest.$ac_ext
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AC_REQUIRE_CPP
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${CXX} ${CXXFLAGS} ${CPPFLAGS} -fno-lto -c conftest.$ac_ext 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD
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if test -f conftest.${OBJEXT}; then
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OBJDUMP_TEST="$(${OBJDUMP} --file-headers conftest.${OBJEXT} | grep 'file format')"
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FILE_TEST="$(file conftest.${OBJEXT})"
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if test -n "$(echo $OBJDUMP_TEST | grep 32)" -o -n "$(echo $FILE_TEST | grep -i 32-bit)"; then
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if test "${COMPILER_MODEL_BITS}" != "32"; then
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AC_MSG_ERROR([32 but not same as bitness in C])
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fi
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fi
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if test -n "$(echo $OBJDUMP_TEST | grep 64)" -o -n "$(echo $FILE_TEST | grep -i 64-bit)"; then
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if test "${COMPILER_MODEL_BITS}" != "64"; then
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AC_MSG_ERROR([64 but not same as bitness in C])
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fi
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fi
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fi
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/bin/rm -f conftest.$ac_ext conftest.${OBJEXT}
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AC_MSG_RESULT([$COMPILER_MODEL_BITS])
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AC_LANG_POP([C++])
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fi
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])
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AC_DEFUN([SAH_SELECT_BITNESS],[
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SAH_DEFAULT_BITNESS
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AC_LANG_PUSH([C])
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AC_MSG_CHECKING([if C compiler can use -m$1])
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if test "$1" != "${COMPILER_MODEL_BITS}"; then
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echo "int main() { return 0; }" >conftest.$ac_ext
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AC_REQUIRE_CPP
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${CC} ${CFLAGS} ${CPPFLAGS} -m$1 -fno-lto -c conftest.$ac_ext 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD
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if test -f conftest.${OBJEXT}; then
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FILE_TEST="$(file conftest.${OBJEXT})"
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if test -n "$(echo $FILE_TEST | grep -i $1-bit)"; then
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CFLAGS="${CFLAGS} -m$1"
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AC_MSG_RESULT([ok use $1])
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else
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AC_MSG_ERROR([failed still $COMPILER_MODEL_BITS])
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fi
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fi
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/bin/rm -f conftest.$ac_ext conftest.${OBJEXT}
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else
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AC_MSG_RESULT([ok use $1])
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fi
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AC_LANG_POP([C])
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AC_LANG_PUSH([C++])
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AC_MSG_CHECKING([if C++ compiler can use -m$1])
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if test "$1" != "${COMPILER_MODEL_BITS}"; then
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echo "int main() { return 0; }" >conftest.$ac_ext
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AC_REQUIRE_CPP
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${CXX} ${CXXFLAGS} ${CPPFLAGS} -m$1 -fno-lto -c conftest.$ac_ext 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD
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if test -f conftest.${OBJEXT}; then
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FILE_TEST="$(file conftest.${OBJEXT})"
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if test -n "$(echo $FILE_TEST | grep -i $1-bit)"; then
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CXXFLAGS="${CXXFLAGS} -m$1"
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AC_MSG_RESULT([ok use $1])
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else
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AC_MSG_ERROR([failed still $COMPILER_MODEL_BITS])
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fi
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fi
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/bin/rm -f conftest.$ac_ext conftest.${OBJEXT}
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else
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AC_MSG_RESULT([ok use $1])
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fi
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AC_LANG_POP([C++])
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COMPILER_MODEL_BITS=$1
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])
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AC_DEFUN([SAH_OPTION_BITNESS],[
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AC_ARG_ENABLE(bitness,
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AC_HELP_STRING([--enable-bitness=(32,64)],
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[enable 32 or 64 bit object/executable files]
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),
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[SAH_SELECT_BITNESS(${enableval})],
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[SAH_DEFAULT_BITNESS]
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)
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])
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