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configure: Move machine tuning flags application section.

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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_GNU_SOURCE
AC_USE_SYSTEM_EXTENSIONS AC_USE_SYSTEM_EXTENSIONS
AC_CANONICAL_HOST
AC_CANONICAL_BUILD
AC_CANONICAL_TARGET
AC_PREFIX_DEFAULT([/]) AC_PREFIX_DEFAULT([/])
AC_CONFIG_MACRO_DIR([tools/m4]) AC_CONFIG_MACRO_DIR([tools/m4])
AC_CONFIG_HEADER(include/ircd/config.h) 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], [[[[ "$enable_generic" = "yes" ]]]]) AM_CONDITIONAL([GENERIC], [[[[ "$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
dnl Untuned Mode compilation dnl Untuned Mode compilation
dnl dnl
@ -445,14 +435,6 @@ AC_ARG_ENABLE(untuned, RB_HELP_STRING([--enable-untuned], [Emit no special featu
AM_CONDITIONAL([UNTUNED], [[[[ "$enable_untuned" = "yes" ]]]]) AM_CONDITIONAL([UNTUNED], [[[[ "$enable_untuned" = "yes" ]]]])
AM_COND_IF([UNTUNED],
[
machine_tuning="fully generic and untuned"
RB_VAR_PREPEND([CXXFLAGS], ["-mno-default"])
], [
CXXFLAGS+=""
])
dnl dnl
dnl Disable third-party allocators dnl Disable third-party allocators
dnl dnl
@ -652,6 +634,10 @@ AM_COND_IF([GCC],
RB_VAR_PREPEND([CXXFLAGS], ["-fverbose-asm"]) RB_VAR_PREPEND([CXXFLAGS], ["-fverbose-asm"])
]) ])
dnl
dnl Misc
dnl
dnl Exception safety at instruction boundary rather than function boundary 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 This option is needed to enable noexcept(false) i.e to throw from a
dnl destructor; without this noexcept(false) still terminates. dnl destructor; without this noexcept(false) still terminates.
@ -681,6 +667,35 @@ AM_COND_IF([GCC],
RB_VAR_PREPEND([CXXFLAGS], ["-flax-vector-conversions"]) 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
dnl Compiler warnings dnl Compiler warnings
dnl dnl
@ -2378,16 +2393,17 @@ AC_OUTPUT
dnl Make it look sexay! dnl Make it look sexay!
echo echo
echo "Configured ........................ $PACKAGE_NAME $PACKAGE_VERSION"
echo "Branding .......................... $BRANDING_NAME $BRANDING_VERSION" echo "Branding .......................... $BRANDING_NAME $BRANDING_VERSION"
echo "Configured ........................ $PACKAGE_NAME $PACKAGE_VERSION"
echo "Configuration time ................ $RB_DATESTR" echo "Configuration time ................ $RB_DATESTR"
echo "Host OS ........................... $host_os"
echo "C Compiler ........................ $CC" echo "C Compiler ........................ $CC"
echo "C Compiler flags (CFLAGS) ......... $CFLAGS" echo "C Compiler flags (CFLAGS) ......... $CFLAGS"
echo "C++ Compiler ...................... $CXX" echo "C++ Compiler ...................... $CXX"
echo "C++ Compiler flags (CXXFLAGS) ..... $CXXFLAGS" echo "C++ Compiler flags (CXXFLAGS) ..... $CXXFLAGS"
echo "Linker ............................ $LD" echo "Linker ............................ $LD"
echo "Linker flags (LDFLAGS) ............ $LDFLAGS" 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 debug ................... $debug"
echo "Developer assert .................. $assert ($assert_type)" echo "Developer assert .................. $assert ($assert_type)"
echo "Developer profiling ............... $profiling" echo "Developer profiling ............... $profiling"