| # =========================================================================== |
| # https://www.gnu.org/software/autoconf-archive/ax_gcc_archflag.html |
| # =========================================================================== |
| # |
| # SYNOPSIS |
| # |
| # AX_GCC_ARCHFLAG([PORTABLE?], [ACTION-SUCCESS], [ACTION-FAILURE]) |
| # |
| # DESCRIPTION |
| # |
| # This macro tries to guess the "native" arch corresponding to the target |
| # architecture for use with gcc's -march=arch or -mtune=arch flags. If |
| # found, the cache variable $ax_cv_gcc_archflag is set to this flag and |
| # ACTION-SUCCESS is executed; otherwise $ax_cv_gcc_archflag is set to |
| # "unknown" and ACTION-FAILURE is executed. The default ACTION-SUCCESS is |
| # to add $ax_cv_gcc_archflag to the end of $CFLAGS. |
| # |
| # PORTABLE? should be either [yes] (default) or [no]. In the former case, |
| # the flag is set to -mtune (or equivalent) so that the architecture is |
| # only used for tuning, but the instruction set used is still portable. In |
| # the latter case, the flag is set to -march (or equivalent) so that |
| # architecture-specific instructions are enabled. |
| # |
| # The user can specify --with-gcc-arch=<arch> in order to override the |
| # macro's choice of architecture, or --without-gcc-arch to disable this. |
| # |
| # When cross-compiling, or if $CC is not gcc, then ACTION-FAILURE is |
| # called unless the user specified --with-gcc-arch manually. |
| # |
| # Requires macros: AX_CHECK_COMPILE_FLAG, AX_GCC_X86_CPUID |
| # |
| # (The main emphasis here is on recent CPUs, on the principle that doing |
| # high-performance computing on old hardware is uncommon.) |
| # |
| # LICENSE |
| # |
| # Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu> |
| # Copyright (c) 2008 Matteo Frigo |
| # Copyright (c) 2014 Tsukasa Oi |
| # Copyright (c) 2017 Alexey Kopytov |
| # |
| # This program is free software: you can redistribute it and/or modify it |
| # under the terms of the GNU General Public License as published by the |
| # Free Software Foundation, either version 3 of the License, or (at your |
| # option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, but |
| # WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
| # Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License along |
| # with this program. If not, see <https://www.gnu.org/licenses/>. |
| # |
| # As a special exception, the respective Autoconf Macro's copyright owner |
| # gives unlimited permission to copy, distribute and modify the configure |
| # scripts that are the output of Autoconf when processing the Macro. You |
| # need not follow the terms of the GNU General Public License when using |
| # or distributing such scripts, even though portions of the text of the |
| # Macro appear in them. The GNU General Public License (GPL) does govern |
| # all other use of the material that constitutes the Autoconf Macro. |
| # |
| # This special exception to the GPL applies to versions of the Autoconf |
| # Macro released by the Autoconf Archive. When you make and distribute a |
| # modified version of the Autoconf Macro, you may extend this special |
| # exception to the GPL to apply to your modified version as well. |
| |
| #serial 20 |
| |
| AC_DEFUN([AX_GCC_ARCHFLAG], |
| [AC_REQUIRE([AC_PROG_CC]) |
| AC_REQUIRE([AC_CANONICAL_HOST]) |
| AC_REQUIRE([AC_PROG_SED]) |
| AC_REQUIRE([AX_COMPILER_VENDOR]) |
| |
| AC_ARG_WITH(gcc-arch, [AS_HELP_STRING([--with-gcc-arch=<arch>], [use architecture <arch> for gcc -march/-mtune, instead of guessing])], |
| ax_gcc_arch=$withval, ax_gcc_arch=yes) |
| |
| AC_MSG_CHECKING([for gcc architecture flag]) |
| AC_MSG_RESULT([]) |
| AC_CACHE_VAL(ax_cv_gcc_archflag, |
| [ |
| ax_cv_gcc_archflag="unknown" |
| |
| if test "$GCC" = yes; then |
| |
| if test "x$ax_gcc_arch" = xyes; then |
| ax_gcc_arch="" |
| if test "$cross_compiling" = no; then |
| case $host_cpu in |
| i[[3456]]86*|x86_64*|amd64*) # use cpuid codes |
| AX_GCC_X86_CPUID(0) |
| AX_GCC_X86_CPUID(1) |
| case $ax_cv_gcc_x86_cpuid_0 in |
| *:756e6547:6c65746e:49656e69) # Intel |
| case $ax_cv_gcc_x86_cpuid_1 in |
| *5[[4578]]?:*:*:*) ax_gcc_arch="pentium-mmx pentium" ;; |
| *5[[123]]?:*:*:*) ax_gcc_arch=pentium ;; |
| *0?61?:*:*:*|?61?:*:*:*|61?:*:*:*) ax_gcc_arch=pentiumpro ;; |
| *0?6[[356]]?:*:*:*|?6[[356]]?:*:*:*|6[[356]]?:*:*:*) ax_gcc_arch="pentium2 pentiumpro" ;; |
| *0?6[[78ab]]?:*:*:*|?6[[78ab]]?:*:*:*|6[[78ab]]?:*:*:*) ax_gcc_arch="pentium3 pentiumpro" ;; |
| *0?6[[9d]]?:*:*:*|?6[[9d]]?:*:*:*|6[[9d]]?:*:*:*|*1?65?:*:*:*) ax_gcc_arch="pentium-m pentium3 pentiumpro" ;; |
| *0?6e?:*:*:*|?6e?:*:*:*|6e?:*:*:*) ax_gcc_arch="yonah pentium-m pentium3 pentiumpro" ;; |
| *0?6f?:*:*:*|?6f?:*:*:*|6f?:*:*:*|*1?66?:*:*:*) ax_gcc_arch="core2 pentium-m pentium3 pentiumpro" ;; |
| *1?6[[7d]]?:*:*:*) ax_gcc_arch="penryn core2 pentium-m pentium3 pentiumpro" ;; |
| *1?6[[aef]]?:*:*:*|*2?6e?:*:*:*) ax_gcc_arch="nehalem corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| *2?6[[5cf]]?:*:*:*) ax_gcc_arch="westmere corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| *2?6[[ad]]?:*:*:*) ax_gcc_arch="sandybridge corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| *3?6[[ae]]?:*:*:*) ax_gcc_arch="ivybridge core-avx-i corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| *3?6[[cf]]?:*:*:*|*4?6[[56]]?:*:*:*) ax_gcc_arch="haswell core-avx2 core-avx-i corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| *3?6d?:*:*:*) ax_gcc_arch="broadwell core-avx2 core-avx-i corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| *1?6c?:*:*:*|*2?6[[67]]?:*:*:*|*3?6[[56]]?:*:*:*) ax_gcc_arch="bonnell atom core2 pentium-m pentium3 pentiumpro" ;; |
| *3?67?:*:*:*|*[[45]]?6[[ad]]?:*:*:*) ax_gcc_arch="silvermont atom core2 pentium-m pentium3 pentiumpro" ;; |
| *000?f[[012]]?:*:*:*|?f[[012]]?:*:*:*|f[[012]]?:*:*:*) ax_gcc_arch="pentium4 pentiumpro" ;; |
| *000?f[[346]]?:*:*:*|?f[[346]]?:*:*:*|f[[346]]?:*:*:*) ax_gcc_arch="nocona prescott pentium4 pentiumpro" ;; |
| # fallback |
| *5??:*:*:*) ax_gcc_arch=pentium ;; |
| *??6??:*:*:*) ax_gcc_arch="core2 pentiumpro" ;; |
| *6??:*:*:*) ax_gcc_arch=pentiumpro ;; |
| *00??f??:*:*:*|??f??:*:*:*|?f??:*:*:*|f??:*:*:*) ax_gcc_arch="pentium4 pentiumpro" ;; |
| esac ;; |
| *:68747541:444d4163:69746e65) # AMD |
| case $ax_cv_gcc_x86_cpuid_1 in |
| *5[[67]]?:*:*:*) ax_gcc_arch=k6 ;; |
| *5[[8]]?:*:*:*) ax_gcc_arch="k6-2 k6" ;; |
| *5[[9d]]?:*:*:*) ax_gcc_arch="k6-3 k6" ;; |
| *6[[12]]?:*:*:*) ax_gcc_arch="athlon k7" ;; |
| *6[[34]]?:*:*:*) ax_gcc_arch="athlon-tbird k7" ;; |
| *6[[678a]]?:*:*:*) ax_gcc_arch="athlon-xp athlon-4 athlon k7" ;; |
| *000?f[[4578bcef]]?:*:*:*|?f[[4578bcef]]?:*:*:*|f[[4578bcef]]?:*:*:*|*001?f[[4578bcf]]?:*:*:*|1?f[[4578bcf]]?:*:*:*) ax_gcc_arch="athlon64 k8" ;; |
| *002?f[[13457bcf]]?:*:*:*|2?f[[13457bcf]]?:*:*:*|*004?f[[138bcf]]?:*:*:*|4?f[[138bcf]]?:*:*:*|*005?f[[df]]?:*:*:*|5?f[[df]]?:*:*:*|*006?f[[8bcf]]?:*:*:*|6?f[[8bcf]]?:*:*:*|*007?f[[cf]]?:*:*:*|7?f[[cf]]?:*:*:*|*00c?f1?:*:*:*|c?f1?:*:*:*|*020?f3?:*:*:*|20?f3?:*:*:*) ax_gcc_arch="athlon64-sse3 k8-sse3 athlon64 k8" ;; |
| *010?f[[245689a]]?:*:*:*|10?f[[245689a]]?:*:*:*|*030?f1?:*:*:*|30?f1?:*:*:*) ax_gcc_arch="barcelona amdfam10 k8" ;; |
| *050?f[[12]]?:*:*:*|50?f[[12]]?:*:*:*) ax_gcc_arch="btver1 amdfam10 k8" ;; |
| *060?f1?:*:*:*|60?f1?:*:*:*) ax_gcc_arch="bdver1 amdfam10 k8" ;; |
| *060?f2?:*:*:*|60?f2?:*:*:*|*061?f[[03]]?:*:*:*|61?f[[03]]?:*:*:*) ax_gcc_arch="bdver2 bdver1 amdfam10 k8" ;; |
| *063?f0?:*:*:*|63?f0?:*:*:*) ax_gcc_arch="bdver3 bdver2 bdver1 amdfam10 k8" ;; |
| *07[[03]]?f0?:*:*:*|7[[03]]?f0?:*:*:*) ax_gcc_arch="btver2 btver1 amdfam10 k8" ;; |
| # fallback |
| *0[[13]]??f??:*:*:*|[[13]]??f??:*:*:*) ax_gcc_arch="barcelona amdfam10 k8" ;; |
| *020?f??:*:*:*|20?f??:*:*:*) ax_gcc_arch="athlon64-sse3 k8-sse3 athlon64 k8" ;; |
| *05??f??:*:*:*|5??f??:*:*:*) ax_gcc_arch="btver1 amdfam10 k8" ;; |
| *060?f??:*:*:*|60?f??:*:*:*) ax_gcc_arch="bdver1 amdfam10 k8" ;; |
| *061?f??:*:*:*|61?f??:*:*:*) ax_gcc_arch="bdver2 bdver1 amdfam10 k8" ;; |
| *06??f??:*:*:*|6??f??:*:*:*) ax_gcc_arch="bdver3 bdver2 bdver1 amdfam10 k8" ;; |
| *070?f??:*:*:*|70?f??:*:*:*) ax_gcc_arch="btver2 btver1 amdfam10 k8" ;; |
| *???f??:*:*:*) ax_gcc_arch="amdfam10 k8" ;; |
| esac ;; |
| *:746e6543:736c7561:48727561) # IDT / VIA (Centaur) |
| case $ax_cv_gcc_x86_cpuid_1 in |
| *54?:*:*:*) ax_gcc_arch=winchip-c6 ;; |
| *5[[89]]?:*:*:*) ax_gcc_arch=winchip2 ;; |
| *66?:*:*:*) ax_gcc_arch=winchip2 ;; |
| *6[[78]]?:*:*:*) ax_gcc_arch=c3 ;; |
| *6[[9adf]]?:*:*:*) ax_gcc_arch="c3-2 c3" ;; |
| esac ;; |
| esac |
| if test x"$ax_gcc_arch" = x; then # fallback |
| case $host_cpu in |
| i586*) ax_gcc_arch=pentium ;; |
| i686*) ax_gcc_arch=pentiumpro ;; |
| esac |
| fi |
| ;; |
| |
| sparc*) |
| AC_PATH_PROG([PRTDIAG], [prtdiag], [prtdiag], [$PATH:/usr/platform/`uname -i`/sbin/:/usr/platform/`uname -m`/sbin/]) |
| cputype=`(((grep cpu /proc/cpuinfo | cut -d: -f2) ; ($PRTDIAG -v |grep -i sparc) ; grep -i cpu /var/run/dmesg.boot ) | head -n 1) 2> /dev/null` |
| cputype=`echo "$cputype" | tr -d ' -' | $SED 's/SPARCIIi/SPARCII/' |tr $as_cr_LETTERS $as_cr_letters` |
| case $cputype in |
| *ultrasparciv*) ax_gcc_arch="ultrasparc4 ultrasparc3 ultrasparc v9" ;; |
| *ultrasparciii*) ax_gcc_arch="ultrasparc3 ultrasparc v9" ;; |
| *ultrasparc*) ax_gcc_arch="ultrasparc v9" ;; |
| *supersparc*|*tms390z5[[05]]*) ax_gcc_arch="supersparc v8" ;; |
| *hypersparc*|*rt62[[056]]*) ax_gcc_arch="hypersparc v8" ;; |
| *cypress*) ax_gcc_arch=cypress ;; |
| esac ;; |
| |
| alphaev5) ax_gcc_arch=ev5 ;; |
| alphaev56) ax_gcc_arch=ev56 ;; |
| alphapca56) ax_gcc_arch="pca56 ev56" ;; |
| alphapca57) ax_gcc_arch="pca57 pca56 ev56" ;; |
| alphaev6) ax_gcc_arch=ev6 ;; |
| alphaev67) ax_gcc_arch=ev67 ;; |
| alphaev68) ax_gcc_arch="ev68 ev67" ;; |
| alphaev69) ax_gcc_arch="ev69 ev68 ev67" ;; |
| alphaev7) ax_gcc_arch="ev7 ev69 ev68 ev67" ;; |
| alphaev79) ax_gcc_arch="ev79 ev7 ev69 ev68 ev67" ;; |
| |
| powerpc*) |
| cputype=`((grep cpu /proc/cpuinfo | head -n 1 | cut -d: -f2 | cut -d, -f1 | $SED 's/ //g') ; /usr/bin/machine ; /bin/machine; grep CPU /var/run/dmesg.boot | head -n 1 | cut -d" " -f2) 2> /dev/null` |
| cputype=`echo $cputype | $SED -e 's/ppc//g;s/ *//g'` |
| case $cputype in |
| *750*) ax_gcc_arch="750 G3" ;; |
| *740[[0-9]]*) ax_gcc_arch="$cputype 7400 G4" ;; |
| *74[[4-5]][[0-9]]*) ax_gcc_arch="$cputype 7450 G4" ;; |
| *74[[0-9]][[0-9]]*) ax_gcc_arch="$cputype G4" ;; |
| *970*) ax_gcc_arch="970 G5 power4";; |
| *POWER4*|*power4*|*gq*) ax_gcc_arch="power4 970";; |
| *POWER5*|*power5*|*gr*|*gs*) ax_gcc_arch="power5 power4 970";; |
| 603ev|8240) ax_gcc_arch="$cputype 603e 603";; |
| *) ax_gcc_arch=$cputype ;; |
| esac |
| ax_gcc_arch="$ax_gcc_arch powerpc" |
| ;; |
| aarch64) |
| cpuimpl=`grep 'CPU implementer' /proc/cpuinfo 2> /dev/null | cut -d: -f2 | tr -d " " | head -n 1` |
| cpuarch=`grep 'CPU architecture' /proc/cpuinfo 2> /dev/null | cut -d: -f2 | tr -d " " | head -n 1` |
| cpuvar=`grep 'CPU variant' /proc/cpuinfo 2> /dev/null | cut -d: -f2 | tr -d " " | head -n 1` |
| case $cpuimpl in |
| 0x42) case $cpuarch in |
| 8) case $cpuvar in |
| 0x0) ax_gcc_arch="thunderx2t99 vulcan armv8.1-a armv8-a+lse armv8-a native" ;; |
| esac |
| ;; |
| esac |
| ;; |
| 0x43) case $cpuarch in |
| 8) case $cpuvar in |
| 0x0) ax_gcc_arch="thunderx armv8-a native" ;; |
| 0x1) ax_gcc_arch="thunderx+lse armv8.1-a armv8-a+lse armv8-a native" ;; |
| esac |
| ;; |
| esac |
| ;; |
| esac |
| ;; |
| esac |
| fi # not cross-compiling |
| fi # guess arch |
| |
| if test "x$ax_gcc_arch" != x -a "x$ax_gcc_arch" != xno; then |
| if test "x[]m4_default([$1],yes)" = xyes; then # if we require portable code |
| flag_prefixes="-mtune=" |
| if test "x$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor" = xclang; then flag_prefixes="-march="; fi |
| # -mcpu=$arch and m$arch generate nonportable code on every arch except |
| # x86. And some other arches (e.g. Alpha) don't accept -mtune. Grrr. |
| case $host_cpu in i*86|x86_64*|amd64*) flag_prefixes="$flag_prefixes -mcpu= -m";; esac |
| else |
| flag_prefixes="-march= -mcpu= -m" |
| fi |
| for flag_prefix in $flag_prefixes; do |
| for arch in $ax_gcc_arch; do |
| flag="$flag_prefix$arch" |
| AX_CHECK_COMPILE_FLAG($flag, [if test "x$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor" = xclang; then |
| if test "x[]m4_default([$1],yes)" = xyes; then |
| if test "x$flag" = "x-march=$arch"; then flag=-mtune=$arch; fi |
| fi |
| fi; ax_cv_gcc_archflag=$flag; break]) |
| done |
| test "x$ax_cv_gcc_archflag" = xunknown || break |
| done |
| fi |
| |
| fi # $GCC=yes |
| ]) |
| AC_MSG_CHECKING([for gcc architecture flag]) |
| AC_MSG_RESULT($ax_cv_gcc_archflag) |
| if test "x$ax_cv_gcc_archflag" = xunknown; then |
| m4_default([$3],:) |
| else |
| m4_default([$2], [CFLAGS="$CFLAGS $ax_cv_gcc_archflag"]) |
| fi |
| ]) |
