1 1.1 mrg # =========================================================================== 2 1.1 mrg # https://www.gnu.org/software/autoconf-archive/ax_gcc_archflag.html 3 1.1 mrg # =========================================================================== 4 1.1 mrg # 5 1.1 mrg # SYNOPSIS 6 1.1 mrg # 7 1.1 mrg # AX_GCC_ARCHFLAG([PORTABLE?], [ACTION-SUCCESS], [ACTION-FAILURE]) 8 1.1 mrg # 9 1.1 mrg # DESCRIPTION 10 1.1 mrg # 11 1.1 mrg # This macro tries to guess the "native" arch corresponding to the target 12 1.1 mrg # architecture for use with gcc's -march=arch or -mtune=arch flags. If 13 1.1 mrg # found, the cache variable $ax_cv_gcc_archflag is set to this flag and 14 1.1 mrg # ACTION-SUCCESS is executed; otherwise $ax_cv_gcc_archflag is set to 15 1.1 mrg # "unknown" and ACTION-FAILURE is executed. The default ACTION-SUCCESS is 16 1.1 mrg # to add $ax_cv_gcc_archflag to the end of $CFLAGS. 17 1.1 mrg # 18 1.1 mrg # PORTABLE? should be either [yes] (default) or [no]. In the former case, 19 1.1 mrg # the flag is set to -mtune (or equivalent) so that the architecture is 20 1.1 mrg # only used for tuning, but the instruction set used is still portable. In 21 1.1 mrg # the latter case, the flag is set to -march (or equivalent) so that 22 1.1 mrg # architecture-specific instructions are enabled. 23 1.1 mrg # 24 1.1 mrg # The user can specify --with-gcc-arch=<arch> in order to override the 25 1.1 mrg # macro's choice of architecture, or --without-gcc-arch to disable this. 26 1.1 mrg # 27 1.1 mrg # When cross-compiling, or if $CC is not gcc, then ACTION-FAILURE is 28 1.1 mrg # called unless the user specified --with-gcc-arch manually. 29 1.1 mrg # 30 1.1 mrg # Requires macros: AX_CHECK_COMPILE_FLAG, AX_GCC_X86_CPUID 31 1.1 mrg # 32 1.1 mrg # (The main emphasis here is on recent CPUs, on the principle that doing 33 1.1 mrg # high-performance computing on old hardware is uncommon.) 34 1.1 mrg # 35 1.1 mrg # LICENSE 36 1.1 mrg # 37 1.1 mrg # Copyright (c) 2008 Steven G. Johnson <stevenj (a] alum.mit.edu> 38 1.1 mrg # Copyright (c) 2008 Matteo Frigo 39 1.1 mrg # Copyright (c) 2014 Tsukasa Oi 40 1.1 mrg # Copyright (c) 2017-2018 Alexey Kopytov 41 1.1 mrg # 42 1.1 mrg # This program is free software: you can redistribute it and/or modify it 43 1.1 mrg # under the terms of the GNU General Public License as published by the 44 1.1 mrg # Free Software Foundation, either version 3 of the License, or (at your 45 1.1 mrg # option) any later version. 46 1.1 mrg # 47 1.1 mrg # This program is distributed in the hope that it will be useful, but 48 1.1 mrg # WITHOUT ANY WARRANTY; without even the implied warranty of 49 1.1 mrg # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 50 1.1 mrg # Public License for more details. 51 1.1 mrg # 52 1.1 mrg # You should have received a copy of the GNU General Public License along 53 1.1 mrg # with this program. If not, see <https://www.gnu.org/licenses/>. 54 1.1 mrg # 55 1.1 mrg # As a special exception, the respective Autoconf Macro's copyright owner 56 1.1 mrg # gives unlimited permission to copy, distribute and modify the configure 57 1.1 mrg # scripts that are the output of Autoconf when processing the Macro. You 58 1.1 mrg # need not follow the terms of the GNU General Public License when using 59 1.1 mrg # or distributing such scripts, even though portions of the text of the 60 1.1 mrg # Macro appear in them. The GNU General Public License (GPL) does govern 61 1.1 mrg # all other use of the material that constitutes the Autoconf Macro. 62 1.1 mrg # 63 1.1 mrg # This special exception to the GPL applies to versions of the Autoconf 64 1.1 mrg # Macro released by the Autoconf Archive. When you make and distribute a 65 1.1 mrg # modified version of the Autoconf Macro, you may extend this special 66 1.1 mrg # exception to the GPL to apply to your modified version as well. 67 1.1 mrg 68 1.1 mrg #serial 22 69 1.1 mrg 70 1.1 mrg AC_DEFUN([AX_GCC_ARCHFLAG], 71 1.1 mrg [AC_REQUIRE([AC_PROG_CC]) 72 1.1 mrg AC_REQUIRE([AC_CANONICAL_HOST]) 73 1.1 mrg AC_REQUIRE([AC_PROG_SED]) 74 1.1 mrg AC_REQUIRE([AX_COMPILER_VENDOR]) 75 1.1 mrg 76 1.1 mrg AC_ARG_WITH(gcc-arch, [AS_HELP_STRING([--with-gcc-arch=<arch>], [use architecture <arch> for gcc -march/-mtune, instead of guessing])], 77 1.1 mrg ax_gcc_arch=$withval, ax_gcc_arch=yes) 78 1.1 mrg 79 1.1 mrg AC_MSG_CHECKING([for gcc architecture flag]) 80 1.1 mrg AC_MSG_RESULT([]) 81 1.1 mrg AC_CACHE_VAL(ax_cv_gcc_archflag, 82 1.1 mrg [ 83 1.1 mrg ax_cv_gcc_archflag="unknown" 84 1.1 mrg 85 1.1 mrg if test "$GCC" = yes; then 86 1.1 mrg 87 1.1 mrg if test "x$ax_gcc_arch" = xyes; then 88 1.1 mrg ax_gcc_arch="" 89 1.1 mrg if test "$cross_compiling" = no; then 90 1.1 mrg case $host_cpu in 91 1.1 mrg i[[3456]]86*|x86_64*|amd64*) # use cpuid codes 92 1.1 mrg AX_GCC_X86_CPUID(0) 93 1.1 mrg AX_GCC_X86_CPUID(1) 94 1.1 mrg case $ax_cv_gcc_x86_cpuid_0 in 95 1.1 mrg *:756e6547:6c65746e:49656e69) # Intel 96 1.1 mrg case $ax_cv_gcc_x86_cpuid_1 in 97 1.1 mrg *5[[4578]]?:*:*:*) ax_gcc_arch="pentium-mmx pentium" ;; 98 1.1 mrg *5[[123]]?:*:*:*) ax_gcc_arch=pentium ;; 99 1.1 mrg *0?61?:*:*:*|?61?:*:*:*|61?:*:*:*) ax_gcc_arch=pentiumpro ;; 100 1.1 mrg *0?6[[356]]?:*:*:*|?6[[356]]?:*:*:*|6[[356]]?:*:*:*) ax_gcc_arch="pentium2 pentiumpro" ;; 101 1.1 mrg *0?6[[78ab]]?:*:*:*|?6[[78ab]]?:*:*:*|6[[78ab]]?:*:*:*) ax_gcc_arch="pentium3 pentiumpro" ;; 102 1.1 mrg *0?6[[9d]]?:*:*:*|?6[[9d]]?:*:*:*|6[[9d]]?:*:*:*|*1?65?:*:*:*) ax_gcc_arch="pentium-m pentium3 pentiumpro" ;; 103 1.1 mrg *0?6e?:*:*:*|?6e?:*:*:*|6e?:*:*:*) ax_gcc_arch="yonah pentium-m pentium3 pentiumpro" ;; 104 1.1 mrg *0?6f?:*:*:*|?6f?:*:*:*|6f?:*:*:*|*1?66?:*:*:*) ax_gcc_arch="core2 pentium-m pentium3 pentiumpro" ;; 105 1.1 mrg *1?6[[7d]]?:*:*:*) ax_gcc_arch="penryn core2 pentium-m pentium3 pentiumpro" ;; 106 1.1 mrg *1?6[[aef]]?:*:*:*|*2?6e?:*:*:*) ax_gcc_arch="nehalem corei7 core2 pentium-m pentium3 pentiumpro" ;; 107 1.1 mrg *2?6[[5cf]]?:*:*:*) ax_gcc_arch="westmere corei7 core2 pentium-m pentium3 pentiumpro" ;; 108 1.1 mrg *2?6[[ad]]?:*:*:*) ax_gcc_arch="sandybridge corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; 109 1.1 mrg *3?6[[ae]]?:*:*:*) ax_gcc_arch="ivybridge core-avx-i corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; 110 1.1 mrg *3?6[[cf]]?:*:*:*|*4?6[[56]]?:*:*:*) ax_gcc_arch="haswell core-avx2 core-avx-i corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; 111 1.1 mrg *3?6d?:*:*:*|*4?6[[7f]]?:*:*:*|*5?66?:*:*:*) ax_gcc_arch="broadwell core-avx2 core-avx-i corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; 112 1.1 mrg *1?6c?:*:*:*|*2?6[[67]]?:*:*:*|*3?6[[56]]?:*:*:*) ax_gcc_arch="bonnell atom core2 pentium-m pentium3 pentiumpro" ;; 113 1.1 mrg *3?67?:*:*:*|*[[45]]?6[[ad]]?:*:*:*) ax_gcc_arch="silvermont atom core2 pentium-m pentium3 pentiumpro" ;; 114 1.1 mrg *000?f[[012]]?:*:*:*|?f[[012]]?:*:*:*|f[[012]]?:*:*:*) ax_gcc_arch="pentium4 pentiumpro" ;; 115 1.1 mrg *000?f[[346]]?:*:*:*|?f[[346]]?:*:*:*|f[[346]]?:*:*:*) ax_gcc_arch="nocona prescott pentium4 pentiumpro" ;; 116 1.1 mrg # fallback 117 1.1 mrg *5??:*:*:*) ax_gcc_arch=pentium ;; 118 1.1 mrg *??6??:*:*:*) ax_gcc_arch="core2 pentiumpro" ;; 119 1.1 mrg *6??:*:*:*) ax_gcc_arch=pentiumpro ;; 120 1.1 mrg *00??f??:*:*:*|??f??:*:*:*|?f??:*:*:*|f??:*:*:*) ax_gcc_arch="pentium4 pentiumpro" ;; 121 1.1 mrg esac ;; 122 1.1 mrg *:68747541:444d4163:69746e65) # AMD 123 1.1 mrg case $ax_cv_gcc_x86_cpuid_1 in 124 1.1 mrg *5[[67]]?:*:*:*) ax_gcc_arch=k6 ;; 125 1.1 mrg *5[[8]]?:*:*:*) ax_gcc_arch="k6-2 k6" ;; 126 1.1 mrg *5[[9d]]?:*:*:*) ax_gcc_arch="k6-3 k6" ;; 127 1.1 mrg *6[[12]]?:*:*:*) ax_gcc_arch="athlon k7" ;; 128 1.1 mrg *6[[34]]?:*:*:*) ax_gcc_arch="athlon-tbird k7" ;; 129 1.1 mrg *6[[678a]]?:*:*:*) ax_gcc_arch="athlon-xp athlon-4 athlon k7" ;; 130 1.1 mrg *000?f[[4578bcef]]?:*:*:*|?f[[4578bcef]]?:*:*:*|f[[4578bcef]]?:*:*:*|*001?f[[4578bcf]]?:*:*:*|1?f[[4578bcf]]?:*:*:*) ax_gcc_arch="athlon64 k8" ;; 131 1.1 mrg *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" ;; 132 1.1 mrg *010?f[[245689a]]?:*:*:*|10?f[[245689a]]?:*:*:*|*030?f1?:*:*:*|30?f1?:*:*:*) ax_gcc_arch="barcelona amdfam10 k8" ;; 133 1.1 mrg *050?f[[12]]?:*:*:*|50?f[[12]]?:*:*:*) ax_gcc_arch="btver1 amdfam10 k8" ;; 134 1.1 mrg *060?f1?:*:*:*|60?f1?:*:*:*) ax_gcc_arch="bdver1 amdfam10 k8" ;; 135 1.1 mrg *060?f2?:*:*:*|60?f2?:*:*:*|*061?f[[03]]?:*:*:*|61?f[[03]]?:*:*:*) ax_gcc_arch="bdver2 bdver1 amdfam10 k8" ;; 136 1.1 mrg *063?f0?:*:*:*|63?f0?:*:*:*) ax_gcc_arch="bdver3 bdver2 bdver1 amdfam10 k8" ;; 137 1.1 mrg *07[[03]]?f0?:*:*:*|7[[03]]?f0?:*:*:*) ax_gcc_arch="btver2 btver1 amdfam10 k8" ;; 138 1.1 mrg # fallback 139 1.1 mrg *0[[13]]??f??:*:*:*|[[13]]??f??:*:*:*) ax_gcc_arch="barcelona amdfam10 k8" ;; 140 1.1 mrg *020?f??:*:*:*|20?f??:*:*:*) ax_gcc_arch="athlon64-sse3 k8-sse3 athlon64 k8" ;; 141 1.1 mrg *05??f??:*:*:*|5??f??:*:*:*) ax_gcc_arch="btver1 amdfam10 k8" ;; 142 1.1 mrg *060?f??:*:*:*|60?f??:*:*:*) ax_gcc_arch="bdver1 amdfam10 k8" ;; 143 1.1 mrg *061?f??:*:*:*|61?f??:*:*:*) ax_gcc_arch="bdver2 bdver1 amdfam10 k8" ;; 144 1.1 mrg *06??f??:*:*:*|6??f??:*:*:*) ax_gcc_arch="bdver3 bdver2 bdver1 amdfam10 k8" ;; 145 1.1 mrg *070?f??:*:*:*|70?f??:*:*:*) ax_gcc_arch="btver2 btver1 amdfam10 k8" ;; 146 1.1 mrg *???f??:*:*:*) ax_gcc_arch="amdfam10 k8" ;; 147 1.1 mrg esac ;; 148 1.1 mrg *:746e6543:736c7561:48727561) # IDT / VIA (Centaur) 149 1.1 mrg case $ax_cv_gcc_x86_cpuid_1 in 150 1.1 mrg *54?:*:*:*) ax_gcc_arch=winchip-c6 ;; 151 1.1 mrg *5[[89]]?:*:*:*) ax_gcc_arch=winchip2 ;; 152 1.1 mrg *66?:*:*:*) ax_gcc_arch=winchip2 ;; 153 1.1 mrg *6[[78]]?:*:*:*) ax_gcc_arch=c3 ;; 154 1.1 mrg *6[[9adf]]?:*:*:*) ax_gcc_arch="c3-2 c3" ;; 155 1.1 mrg esac ;; 156 1.1 mrg esac 157 1.1 mrg if test x"$ax_gcc_arch" = x; then # fallback 158 1.1 mrg case $host_cpu in 159 1.1 mrg i586*) ax_gcc_arch=pentium ;; 160 1.1 mrg i686*) ax_gcc_arch=pentiumpro ;; 161 1.1 mrg esac 162 1.1 mrg fi 163 1.1 mrg ;; 164 1.1 mrg 165 1.1 mrg sparc*) 166 1.1 mrg AC_PATH_PROG([PRTDIAG], [prtdiag], [prtdiag], [$PATH:/usr/platform/`uname -i`/sbin/:/usr/platform/`uname -m`/sbin/]) 167 1.1 mrg cputype=`(((grep cpu /proc/cpuinfo | cut -d: -f2) ; ($PRTDIAG -v |grep -i sparc) ; grep -i cpu /var/run/dmesg.boot ) | head -n 1) 2> /dev/null` 168 1.1 mrg cputype=`echo "$cputype" | tr -d ' -' | $SED 's/SPARCIIi/SPARCII/' |tr $as_cr_LETTERS $as_cr_letters` 169 1.1 mrg case $cputype in 170 1.1 mrg *ultrasparciv*) ax_gcc_arch="ultrasparc4 ultrasparc3 ultrasparc v9" ;; 171 1.1 mrg *ultrasparciii*) ax_gcc_arch="ultrasparc3 ultrasparc v9" ;; 172 1.1 mrg *ultrasparc*) ax_gcc_arch="ultrasparc v9" ;; 173 1.1 mrg *supersparc*|*tms390z5[[05]]*) ax_gcc_arch="supersparc v8" ;; 174 1.1 mrg *hypersparc*|*rt62[[056]]*) ax_gcc_arch="hypersparc v8" ;; 175 1.1 mrg *cypress*) ax_gcc_arch=cypress ;; 176 1.1 mrg esac ;; 177 1.1 mrg 178 1.1 mrg alphaev5) ax_gcc_arch=ev5 ;; 179 1.1 mrg alphaev56) ax_gcc_arch=ev56 ;; 180 1.1 mrg alphapca56) ax_gcc_arch="pca56 ev56" ;; 181 1.1 mrg alphapca57) ax_gcc_arch="pca57 pca56 ev56" ;; 182 1.1 mrg alphaev6) ax_gcc_arch=ev6 ;; 183 1.1 mrg alphaev67) ax_gcc_arch=ev67 ;; 184 1.1 mrg alphaev68) ax_gcc_arch="ev68 ev67" ;; 185 1.1 mrg alphaev69) ax_gcc_arch="ev69 ev68 ev67" ;; 186 1.1 mrg alphaev7) ax_gcc_arch="ev7 ev69 ev68 ev67" ;; 187 1.1 mrg alphaev79) ax_gcc_arch="ev79 ev7 ev69 ev68 ev67" ;; 188 1.1 mrg 189 1.1 mrg powerpc*) 190 1.1 mrg 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` 191 1.1 mrg cputype=`echo $cputype | $SED -e 's/ppc//g;s/ *//g'` 192 1.1 mrg case $cputype in 193 1.1 mrg *750*) ax_gcc_arch="750 G3" ;; 194 1.1 mrg *740[[0-9]]*) ax_gcc_arch="$cputype 7400 G4" ;; 195 1.1 mrg *74[[4-5]][[0-9]]*) ax_gcc_arch="$cputype 7450 G4" ;; 196 1.1 mrg *74[[0-9]][[0-9]]*) ax_gcc_arch="$cputype G4" ;; 197 1.1 mrg *970*) ax_gcc_arch="970 G5 power4";; 198 1.1 mrg *POWER4*|*power4*|*gq*) ax_gcc_arch="power4 970";; 199 1.1 mrg *POWER5*|*power5*|*gr*|*gs*) ax_gcc_arch="power5 power4 970";; 200 1.1 mrg 603ev|8240) ax_gcc_arch="$cputype 603e 603";; 201 1.1 mrg *POWER7*) ax_gcc_arch="power7";; 202 1.1 mrg *POWER8*) ax_gcc_arch="power8";; 203 1.1 mrg *POWER9*) ax_gcc_arch="power9";; 204 1.1 mrg *POWER10*) ax_gcc_arch="power10";; 205 1.1 mrg *) ax_gcc_arch=$cputype ;; 206 1.1 mrg esac 207 1.1 mrg ax_gcc_arch="$ax_gcc_arch powerpc" 208 1.1 mrg ;; 209 1.1 mrg aarch64) 210 1.1 mrg cpuimpl=`grep 'CPU implementer' /proc/cpuinfo 2> /dev/null | cut -d: -f2 | tr -d " " | head -n 1` 211 1.1 mrg cpuarch=`grep 'CPU architecture' /proc/cpuinfo 2> /dev/null | cut -d: -f2 | tr -d " " | head -n 1` 212 1.1 mrg cpuvar=`grep 'CPU variant' /proc/cpuinfo 2> /dev/null | cut -d: -f2 | tr -d " " | head -n 1` 213 1.1 mrg case $cpuimpl in 214 1.1 mrg 0x42) case $cpuarch in 215 1.1 mrg 8) case $cpuvar in 216 1.1 mrg 0x0) ax_gcc_arch="thunderx2t99 vulcan armv8.1-a armv8-a+lse armv8-a native" ;; 217 1.1 mrg esac 218 1.1 mrg ;; 219 1.1 mrg esac 220 1.1 mrg ;; 221 1.1 mrg 0x43) case $cpuarch in 222 1.1 mrg 8) case $cpuvar in 223 1.1 mrg 0x0) ax_gcc_arch="thunderx armv8-a native" ;; 224 1.1 mrg 0x1) ax_gcc_arch="thunderx+lse armv8.1-a armv8-a+lse armv8-a native" ;; 225 1.1 mrg esac 226 1.1 mrg ;; 227 1.1 mrg esac 228 1.1 mrg ;; 229 1.1 mrg esac 230 1.1 mrg ;; 231 1.1 mrg esac 232 1.1 mrg fi # not cross-compiling 233 1.1 mrg fi # guess arch 234 1.1 mrg 235 1.1 mrg if test "x$ax_gcc_arch" != x -a "x$ax_gcc_arch" != xno; then 236 1.1 mrg if test "x[]m4_default([$1],yes)" = xyes; then # if we require portable code 237 1.1 mrg flag_prefixes="-mtune=" 238 1.1 mrg if test "x$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor" = xclang; then flag_prefixes="-march="; fi 239 1.1 mrg # -mcpu=$arch and m$arch generate nonportable code on every arch except 240 1.1 mrg # x86. And some other arches (e.g. Alpha) don't accept -mtune. Grrr. 241 1.1 mrg case $host_cpu in i*86|x86_64*|amd64*) flag_prefixes="$flag_prefixes -mcpu= -m";; esac 242 1.1 mrg else 243 1.1 mrg flag_prefixes="-march= -mcpu= -m" 244 1.1 mrg fi 245 1.1 mrg for flag_prefix in $flag_prefixes; do 246 1.1 mrg for arch in $ax_gcc_arch; do 247 1.1 mrg flag="$flag_prefix$arch" 248 1.1 mrg AX_CHECK_COMPILE_FLAG($flag, [if test "x$ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor" = xclang; then 249 1.1 mrg if test "x[]m4_default([$1],yes)" = xyes; then 250 1.1 mrg if test "x$flag" = "x-march=$arch"; then flag=-mtune=$arch; fi 251 1.1 mrg fi 252 1.1 mrg fi; ax_cv_gcc_archflag=$flag; break]) 253 1.1 mrg done 254 1.1 mrg test "x$ax_cv_gcc_archflag" = xunknown || break 255 1.1 mrg done 256 1.1 mrg fi 257 1.1 mrg 258 1.1 mrg fi # $GCC=yes 259 1.1 mrg ]) 260 1.1 mrg AC_MSG_CHECKING([for gcc architecture flag]) 261 1.1 mrg AC_MSG_RESULT($ax_cv_gcc_archflag) 262 1.1 mrg if test "x$ax_cv_gcc_archflag" = xunknown; then 263 1.1 mrg m4_default([$3],:) 264 1.1 mrg else 265 1.1 mrg m4_default([$2], [CFLAGS="$CFLAGS $ax_cv_gcc_archflag"]) 266 1.1 mrg fi 267 1.1 mrg ]) 268
Indexes created Sun Oct 25 00:26:45 UTC 2026