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configure: Output target codegen feature table.

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This commit is contained in:
Jason Volk 2022-07-27 12:40:22 -07:00
parent c002e03242
commit 05a776dd51
1 changed files with 44 additions and 11 deletions
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55
configure.ac
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@ -806,32 +806,64 @@ dnl
dnl Machine Tuning
dnl
TUNE_FLAGS=""
AM_COND_IF([UNTUNED],
[
machine_tuning="generic ${host_cpu} and untuned"
RB_VAR_PREPEND([CXXFLAGS], ["-mno-default"])
RB_VAR_PREPEND([TUNE_FLAGS], ["-mno-default"])
], [
AM_COND_IF([GENERIC],
[
machine_tuning="generic ${host_cpu} instruction set"
RB_VAR_PREPEND([CXXFLAGS], ["-mtune=generic"])
machine_tuning="generic ${host_cpu}"
RB_VAR_PREPEND([TUNE_FLAGS], ["-mtune=generic"])
], [
machine_tuning="${host_cpu} native instruction set"
machine_tuning="${host_cpu} native"
AS_CASE([$host_cpu],
[x86_64],
[
dnl AMD K10's SSE4a doesn't work with valgrind
RB_VAR_PREPEND([CXXFLAGS], ["-mno-sse4a"])
RB_VAR_PREPEND([TUNE_FLAGS], ["-mno-sse4a"])
dnl Not accepted by clang on aarch64
RB_VAR_PREPEND([CXXFLAGS], ["-march=native"])
RB_VAR_PREPEND([TUNE_FLAGS], ["-march=native"])
])
RB_VAR_PREPEND([CXXFLAGS], ["-mtune=native"])
RB_VAR_PREPEND([TUNE_FLAGS], ["-mtune=native"])
])
])
RB_VAR_PREPEND([CXXFLAGS], ["$TUNE_FLAGS"])
dnl Get the target features for this build from gcc into a readable string
AM_COND_IF([GCC],
[
_cxx=$(echo "${CXX}" | cut -d' ' -f1)
_cmd="${_cxx} -Q --help=target ${TUNE_FLAGS}"
machine_features=$(${_cmd} | grep enabled | grep -v 'mno-')
machine_features=$(printf "\n${machine_features}")
])
dnl Get the target features for this build from clang into a readable string
AM_COND_IF([CLANG],
[
_flag=0
_cxx=$(echo "${CXX}" | cut -d' ' -f1)
_str=$(${_cxx} -E ${TUNE_FLAGS} - -### 2>&1)
machine_features=""
for i in $_str; do
if [[ $i == '"-target-feature"' ]]; then
_flag=1
elif [[ $_flag == 1 ]]; then
_flag=0
attr=$(echo $i | sed -e 's/^"//' -e 's/"$//')
if [[ ${attr:0:1} == '+' ]]; then
machine_features="${machine_features}${attr} "
fi
fi
done
])
dnl
dnl Compiler warnings
dnl
@ -3002,17 +3034,18 @@ echo
echo "Linker ............................ $LD"
echo "Linker flags (LDFLAGS) ............ $LDFLAGS"
echo
echo "Target platform (host) ............ $host_cpu $host_vendor $host_os"
echo "Developer platform (build) ........ $build_cpu $build_vendor $build_os"
echo "Target platform (host) ............ $host_cpu $host_vendor $host_os"
echo "Target features ................... $machine_tuning $machine_features"
echo
echo "Precompile headers ................ $build_pch"
echo "Developer warnings ................ $warnings"
echo "Developer debugging ............... $debug"
echo "Developer assertions .............. $assert ($assert_type)"
echo "Developer warnings ................ $warnings"
echo "Optimized compile ................. $optimize (-O$optimize_level)"
echo "Optimized linking ................. $lto"
echo "Optimized runtime ................. $profile_use"
echo "Profiling runtime ................. $profiling"
echo "Precompile headers ................ $build_pch"
echo "Machine tuned ..................... $machine_tuning"
echo
echo "Magic support ..................... $have_magic"
echo "ImageMagick support ............... $have_imagemagick"