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https://github.com/matrix-construct/construct
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configure: Improve generic mode and machine tuning related options.
This commit is contained in:
Jason Volk
parent
8f4fe45034
commit
38c9a77a8f
1 changed files with 65 additions and 37 deletions
102
configure.ac
102
configure.ac
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@ -436,7 +436,7 @@ dnl
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dnl Generic Mode compilation
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dnl
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AC_MSG_CHECKING(whether to enable generic mode or tune for this host)
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AC_MSG_CHECKING(whether to enable generic mode or emit for this host)
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AC_ARG_ENABLE(generic, RB_HELP_STRING([--enable-generic], [Emit more generic code for pkg binaries]),
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[
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enable_generic="yes"
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@ -450,21 +450,23 @@ AC_ARG_ENABLE(generic, RB_HELP_STRING([--enable-generic], [Emit more generic cod
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AM_CONDITIONAL([GENERIC], [[[[ "$enable_generic" = "yes" ]]]])
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dnl
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dnl Untuned Mode compilation
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dnl Tuned compilation
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dnl
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AC_MSG_CHECKING(whether to enable fully untuned mode)
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AC_ARG_ENABLE(untuned, RB_HELP_STRING([--enable-untuned], [Emit no special feature instructions]),
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machine=""
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AC_MSG_CHECKING(whether to emit specific architecture features)
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AC_ARG_WITH(machine, RB_HELP_STRING([--with-machine], [Emit special feature instructions]),
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[
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enable_untuned="yes"
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AC_MSG_RESULT([yes])
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RB_DEFINE([UNTUNED], [1], [Building binary without extended-feature cpu instructions.])
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], [
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enable_untuned="no"
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AC_MSG_RESULT([no])
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if [[ "$withval" != "yes" ]]; then
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machine="$withval"
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fi
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])
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AM_CONDITIONAL([UNTUNED], [[[[ "$enable_untuned" = "yes" ]]]])
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if [[ -z "$machine" ]]; then
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AC_MSG_RESULT([no])
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else
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AC_MSG_RESULT([yes])
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fi
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dnl
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dnl Disable third-party allocators
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@ -760,40 +762,66 @@ dnl
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dnl Machine Tuning
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dnl
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TUNE_FLAGS=""
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AM_COND_IF([UNTUNED],
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MACHINE_FLAGS=""
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dnl Initial machine
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machine_arch="native"
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machine_tune="native"
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AM_COND_IF([GENERIC],
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[
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machine_tuning="generic ${host_cpu} and untuned"
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RB_VAR_PREPEND([TUNE_FLAGS], ["-mno-default"])
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], [
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AM_COND_IF([GENERIC],
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machine_tune="generic"
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AS_CASE([$target_cpu],
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[x86_64],
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[
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machine_tuning="generic ${host_cpu}"
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RB_VAR_PREPEND([TUNE_FLAGS], ["-mtune=generic"])
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], [
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machine_tuning="${host_cpu} native"
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AS_CASE([$host_cpu],
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[x86_64],
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[
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dnl AMD K10's SSE4a doesn't work with valgrind
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RB_VAR_PREPEND([TUNE_FLAGS], ["-mno-sse4a"])
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dnl Not accepted by clang on aarch64
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RB_VAR_PREPEND([TUNE_FLAGS], ["-march=native"])
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])
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RB_VAR_PREPEND([TUNE_FLAGS], ["-mtune=native"])
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machine_arch="x86-64"
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])
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])
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RB_VAR_PREPEND([CXXFLAGS], ["$TUNE_FLAGS"])
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dnl Specific extension specification
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machine_feat=""
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for feature in $machine; do
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if [[ $(echo $feature | cut -d"=" -f1) == "arch" ]]; then
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machine_arch=$(echo $feature | cut -d"=" -f2)
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elif [[ $(echo $feature | cut -d"=" -f1) == "tune" ]]; then
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machine_tune=$(echo $feature | cut -d"=" -f2)
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else
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machine_feat="$feature $machine_feat"
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RB_VAR_PREPEND([MACHINE_FLAGS], ["-m${feature}"])
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fi
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done
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dnl Ensures mtune=generic accompanies one of the generic march= options
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dnl even if --enable-generic wasn't given, otherwise gcc will reject.
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AM_COND_IF_NOT([GENERIC],
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[
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AS_CASE([$machine_arch],
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[x86-64*],
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[
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machine_tune="generic"
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], [
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machine_tune=$machine_arch
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])
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])
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dnl Specific extension underrides
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AS_CASE([$target_cpu],
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[x86_64],
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[
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dnl AMD K10's SSE4a doesn't work with valgrind
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RB_VAR_PREPEND([MACHINE_FLAGS], ["-mno-sse4a"])
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])
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RB_VAR_PREPEND([MACHINE_FLAGS], ["-mtune=$machine_tune"])
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RB_VAR_PREPEND([MACHINE_FLAGS], ["-march=$machine_arch"])
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machine_tuning="${target_cpu} arch=$machine_arch tune=$machine_tune :$machine_feat"
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RB_VAR_PREPEND([CXXFLAGS], ["$MACHINE_FLAGS"])
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dnl Get the target features for this build from gcc into a readable string
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AM_COND_IF([GCC],
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[
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_cxx=$(echo "${CXX}" | cut -d' ' -f1)
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_cmd="${_cxx} -Q --help=target ${TUNE_FLAGS}"
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_cmd="${_cxx} -Q --help=target ${MACHINE_FLAGS}"
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machine_features=$(${_cmd} | grep enabled | grep -v 'mno-')
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machine_features=$(printf "\n${machine_features}")
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])
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@ -803,7 +831,7 @@ AM_COND_IF([CLANG],
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[
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_flag=0
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_cxx=$(echo "${CXX}" | cut -d' ' -f1)
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_str=$(${_cxx} -E ${TUNE_FLAGS} - -### 2>&1)
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_str=$(${_cxx} -E ${MACHINE_FLAGS} - -### 2>&1)
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machine_features=""
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for i in $_str; do
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if [[ $i == '"-target-feature"' ]]; then
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@ -1025,7 +1053,7 @@ RB_HELP_STRING([--enable-every-warning], [Enable warning discovery (-Weverything
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AC_MSG_RESULT([no])
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])
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AM_COND_IF_NOT([UNTUNED],
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AM_COND_IF_NOT([GENERIC],
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[
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dnl When tuning for a specific target ignore the ABI compat warnings
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RB_MAYBE_CWARN([-Wno-psabi], charybdis_cv_c_gcc_w_psabi)
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