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Code Issues Releases Wiki Activity

configure: Move machine tuning flags application section.

Browse source 
configure: Add AC_CANONICAL_HOST detection.

configure: Tune with mfpmath=sse for x86_64.
This commit is contained in:
Jason Volk 2020-07-12 11:48:48 -07:00
parent 4184309ff2
commit 7928ad4f9b
1 changed files with 40 additions and 24 deletions
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64
configure.ac
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@ -5,6 +5,10 @@ AC_INIT([construct], [1.0-dev])
AC_GNU_SOURCE
AC_USE_SYSTEM_EXTENSIONS
AC_CANONICAL_HOST
AC_CANONICAL_BUILD
AC_CANONICAL_TARGET
AC_PREFIX_DEFAULT([/])
AC_CONFIG_MACRO_DIR([tools/m4])
AC_CONFIG_HEADER(include/ircd/config.h)
@ -414,20 +418,6 @@ AC_ARG_ENABLE(generic, RB_HELP_STRING([--enable-generic], [Emit more generic cod
AM_CONDITIONAL([GENERIC], [[[[ "$enable_generic" = "yes" ]]]])
AM_COND_IF([GENERIC],
[
machine_tuning="generic instruction set"
RB_VAR_PREPEND([CXXFLAGS], ["-mtune=generic"])
], [
machine_tuning="native instruction set"
dnl AMD K10's SSE4a doesn't work with valgrind
RB_VAR_PREPEND([CXXFLAGS], ["-mno-sse4a"])
RB_VAR_PREPEND([CXXFLAGS], ["-mtune=native"])
RB_VAR_PREPEND([CXXFLAGS], ["-march=native"])
])
dnl
dnl Untuned Mode compilation
dnl
@ -445,14 +435,6 @@ AC_ARG_ENABLE(untuned, RB_HELP_STRING([--enable-untuned], [Emit no special featu
AM_CONDITIONAL([UNTUNED], [[[[ "$enable_untuned" = "yes" ]]]])
AM_COND_IF([UNTUNED],
[
machine_tuning="fully generic and untuned"
RB_VAR_PREPEND([CXXFLAGS], ["-mno-default"])
], [
CXXFLAGS+=""
])
dnl
dnl Disable third-party allocators
dnl
@ -652,6 +634,10 @@ AM_COND_IF([GCC],
RB_VAR_PREPEND([CXXFLAGS], ["-fverbose-asm"])
])
dnl
dnl Misc
dnl
dnl Exception safety at instruction boundary rather than function boundary
dnl This option is needed to enable noexcept(false) i.e to throw from a
dnl destructor; without this noexcept(false) still terminates.
@ -681,6 +667,35 @@ AM_COND_IF([GCC],
RB_VAR_PREPEND([CXXFLAGS], ["-flax-vector-conversions"])
])
dnl
dnl Machine Tuning
dnl
AM_COND_IF([UNTUNED],
[
machine_tuning="generic ${host_cpu} and untuned"
RB_VAR_PREPEND([CXXFLAGS], ["-mno-default"])
], [
AM_COND_IF([GENERIC],
[
machine_tuning="generic ${host_cpu} instruction set"
RB_VAR_PREPEND([CXXFLAGS], ["-mtune=generic"])
], [
machine_tuning="${host_cpu} native instruction set"
RB_VAR_PREPEND([CXXFLAGS], ["-mtune=native"])
RB_VAR_PREPEND([CXXFLAGS], ["-march=native"])
dnl AMD K10's SSE4a doesn't work with valgrind
RB_VAR_PREPEND([CXXFLAGS], ["-mno-sse4a"])
AS_CASE([$host_cpu],
[x86_64],
[
RB_VAR_PREPEND([CXXFLAGS], ["-mfpmath=sse"])
])
])
])
dnl
dnl Compiler warnings
dnl
@ -2378,16 +2393,17 @@ AC_OUTPUT
dnl Make it look sexay!
echo
echo "Configured ........................ $PACKAGE_NAME $PACKAGE_VERSION"
echo "Branding .......................... $BRANDING_NAME $BRANDING_VERSION"
echo "Configured ........................ $PACKAGE_NAME $PACKAGE_VERSION"
echo "Configuration time ................ $RB_DATESTR"
echo "Host OS ........................... $host_os"
echo "C Compiler ........................ $CC"
echo "C Compiler flags (CFLAGS) ......... $CFLAGS"
echo "C++ Compiler ...................... $CXX"
echo "C++ Compiler flags (CXXFLAGS) ..... $CXXFLAGS"
echo "Linker ............................ $LD"
echo "Linker flags (LDFLAGS) ............ $LDFLAGS"
echo "Targeting platform (host) ......... $host_cpu $host_vendor $host_os"
echo "Developer platform (build) ........ $build_cpu $build_vendor $build_os"
echo "Developer debug ................... $debug"
echo "Developer assert .................. $assert ($assert_type)"
echo "Developer profiling ............... $profiling"