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bootstrap: prefer to use standard flags for C and CXX

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Daniel Pfeifer 2017-05-14 19:41:55 +02:00 committed by Brad King
parent d375618921
commit 6181a9e00e
1 changed files with 37 additions and 28 deletions
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65
bootstrap
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@ -6,6 +6,17 @@ die() {
echo "$@" 1>&2 ; exit 1
}
# Compile flag extraction function.
cmake_extract_standard_flags()
{
cd "${cmake_source_dir}/Modules/Compiler/"
for file in ${1:-*}-${2}.cmake; do
cat "${file}" \
| sed -n "s/ *set *( *CMAKE_${2}${3}_EXTENSION_COMPILE_OPTION *\"\{0,1\}\([^\")]*\).*/\1/p" \
| tr ';' ' '
done
}
# Version number extraction function.
cmake_version_component()
{
@ -954,6 +965,17 @@ for a in ${cmake_c_compilers}; do
cmake_c_compiler="${a}"
fi
done
for std in 11 99 90; do
try_flags="`cmake_extract_standard_flags \"${cmake_toolchain}\" C \"${std}\"`"
for flag in $try_flags; do
echo "Checking whether ${cmake_c_compiler} supports ${flag}" >> cmake_bootstrap.log 2>&1
if cmake_try_run "${cmake_c_compiler}" "${cmake_c_flags} ${flag}" \
"${TMPFILE}.c" >> cmake_bootstrap.log 2>&1; then
cmake_c_flags="${cmake_c_flags} ${flag}"
break 2
fi
done
done
rm -f "${TMPFILE}.c"
if [ -z "${cmake_c_compiler}" ]; then
@ -988,6 +1010,10 @@ echo '
# include <iostream.h>
#endif
#if __cplusplus >= 201103L && defined(__SUNPRO_CC) && __SUNPRO_CC < 0x5140
#error "SunPro <= 5.13 C++ 11 mode not supported due to bug in move semantics."
#endif
class NeedCXX
{
public:
@ -1015,6 +1041,17 @@ for a in ${cmake_cxx_compilers}; do
fi
done
done
for std in 14 11 98; do
try_flags="`cmake_extract_standard_flags \"${cmake_toolchain}\" CXX \"${std}\"`"
for flag in $try_flags; do
echo "Checking for wheter ${cmake_cxx_flags} supports ${flag}" >> cmake_bootstrap.log 2>&1
if cmake_try_run "${cmake_cxx_compiler}" "${cmake_cxx_flags} ${flag} -DTEST1" \
"${TMPFILE}.cxx" >> cmake_bootstrap.log 2>&1; then
cmake_cxx_flags="${cmake_cxx_flags} ${flag} "
break 2
fi
done
done
rm -f "${TMPFILE}.cxx"
if [ -z "${cmake_cxx_compiler}" ]; then
@ -1240,34 +1277,6 @@ if [ "x${cmake_cxx_compiler_is_gnu}" != "x1" ]; then
fi
if [ "x${cmake_cxx_compiler_is_gnu}" != "x1" ]; then
# Are we SolarisStudio?
TMPFILE=`cmake_tmp_file`
echo '
#if defined(__SUNPRO_CC)
#include <iostream>
int main() { std::cout << "This is SolarisStudio" << std::endl; return 0;}
#endif
' > ${TMPFILE}.cxx
cmake_cxx_compiler_is_solarisstudio=0
if cmake_try_run "${cmake_cxx_compiler}" \
"${cmake_cxx_flags} " "${TMPFILE}.cxx" >> cmake_bootstrap.log 2>&1; then
cmake_cxx_compiler_is_solarisstudio=1
fi
if [ "x${cmake_cxx_compiler_is_solarisstudio}" = "x1" ]; then
echo "${cmake_cxx_compiler} is SolarisStudio compiler"
else
echo "${cmake_cxx_compiler} is not SolarisStudio compiler"
fi
rm -f "${TMPFILE}.cxx"
if [ "x${cmake_cxx_compiler_is_solarisstudio}" = "x1" ]; then
cmake_cxx_flags="${cmake_cxx_flags} -library=stlport4"
fi
fi
# Test for kwsys features
KWSYS_NAME_IS_KWSYS=0
KWSYS_BUILD_SHARED=0