cristy | 37110d6 | 2012-03-01 18:38:20 +0000 | [diff] [blame] | 1 | # =========================================================================== |
| 2 | # http://www.gnu.org/software/autoconf-archive/ax_gcc_archflag.html |
| 3 | # =========================================================================== |
| 4 | # |
| 5 | # SYNOPSIS |
| 6 | # |
| 7 | # AX_GCC_ARCHFLAG([PORTABLE?], [ACTION-SUCCESS], [ACTION-FAILURE]) |
| 8 | # |
| 9 | # DESCRIPTION |
| 10 | # |
| 11 | # This macro tries to guess the "native" arch corresponding to the target |
| 12 | # architecture for use with gcc's -march=arch or -mtune=arch flags. If |
| 13 | # found, the cache variable $ax_cv_gcc_archflag is set to this flag and |
| 14 | # ACTION-SUCCESS is executed; otherwise $ax_cv_gcc_archflag is set to |
| 15 | # "unknown" and ACTION-FAILURE is executed. The default ACTION-SUCCESS is |
| 16 | # to add $ax_cv_gcc_archflag to the end of $CFLAGS. |
| 17 | # |
| 18 | # PORTABLE? should be either [yes] (default) or [no]. In the former case, |
| 19 | # the flag is set to -mtune (or equivalent) so that the architecture is |
| 20 | # only used for tuning, but the instruction set used is still portable. In |
| 21 | # the latter case, the flag is set to -march (or equivalent) so that |
| 22 | # architecture-specific instructions are enabled. |
| 23 | # |
| 24 | # The user can specify --with-gcc-arch=<arch> in order to override the |
| 25 | # macro's choice of architecture, or --without-gcc-arch to disable this. |
| 26 | # |
| 27 | # When cross-compiling, or if $CC is not gcc, then ACTION-FAILURE is |
| 28 | # called unless the user specified --with-gcc-arch manually. |
| 29 | # |
| 30 | # Requires macros: AX_CHECK_COMPILE_FLAG, AX_GCC_X86_CPUID |
| 31 | # |
| 32 | # (The main emphasis here is on recent CPUs, on the principle that doing |
| 33 | # high-performance computing on old hardware is uncommon.) |
| 34 | # |
| 35 | # LICENSE |
| 36 | # |
| 37 | # Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu> |
| 38 | # Copyright (c) 2008 Matteo Frigo |
| 39 | # Copyright (c) 2012 Tsukasa Oi |
| 40 | # |
| 41 | # This program is free software: you can redistribute it and/or modify it |
| 42 | # under the terms of the GNU General Public License as published by the |
| 43 | # Free Software Foundation, either version 3 of the License, or (at your |
| 44 | # option) any later version. |
| 45 | # |
| 46 | # This program is distributed in the hope that it will be useful, but |
| 47 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
| 48 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
| 49 | # Public License for more details. |
| 50 | # |
| 51 | # You should have received a copy of the GNU General Public License along |
| 52 | # with this program. If not, see <http://www.gnu.org/licenses/>. |
| 53 | # |
| 54 | # As a special exception, the respective Autoconf Macro's copyright owner |
| 55 | # gives unlimited permission to copy, distribute and modify the configure |
| 56 | # scripts that are the output of Autoconf when processing the Macro. You |
| 57 | # need not follow the terms of the GNU General Public License when using |
| 58 | # or distributing such scripts, even though portions of the text of the |
| 59 | # Macro appear in them. The GNU General Public License (GPL) does govern |
| 60 | # all other use of the material that constitutes the Autoconf Macro. |
| 61 | # |
| 62 | # This special exception to the GPL applies to versions of the Autoconf |
| 63 | # Macro released by the Autoconf Archive. When you make and distribute a |
| 64 | # modified version of the Autoconf Macro, you may extend this special |
| 65 | # exception to the GPL to apply to your modified version as well. |
| 66 | |
| 67 | #serial 11 |
| 68 | |
| 69 | AC_DEFUN([AX_GCC_ARCHFLAG], |
| 70 | [AC_REQUIRE([AC_PROG_CC]) |
| 71 | AC_REQUIRE([AC_CANONICAL_HOST]) |
| 72 | |
| 73 | AC_ARG_WITH(gcc-arch, [AS_HELP_STRING([--with-gcc-arch=<arch>], [use architecture <arch> for gcc -march/-mtune, instead of guessing])], |
cristy | 149cbc6 | 2012-03-01 19:31:48 +0000 | [diff] [blame] | 74 | ax_gcc_arch=$withval, ax_gcc_arch=no) |
cristy | 37110d6 | 2012-03-01 18:38:20 +0000 | [diff] [blame] | 75 | |
| 76 | AC_MSG_CHECKING([for gcc architecture flag]) |
| 77 | AC_MSG_RESULT([]) |
| 78 | AC_CACHE_VAL(ax_cv_gcc_archflag, |
| 79 | [ |
| 80 | ax_cv_gcc_archflag="unknown" |
| 81 | |
| 82 | if test "$GCC" = yes; then |
| 83 | |
| 84 | if test "x$ax_gcc_arch" = xyes; then |
| 85 | ax_gcc_arch="" |
| 86 | if test "$cross_compiling" = no; then |
| 87 | case $host_cpu in |
| 88 | i[[3456]]86*|x86_64*) # use cpuid codes |
| 89 | AX_GCC_X86_CPUID(0) |
| 90 | AX_GCC_X86_CPUID(1) |
| 91 | case $ax_cv_gcc_x86_cpuid_0 in |
| 92 | *:756e6547:*:*) # Intel |
| 93 | case $ax_cv_gcc_x86_cpuid_1 in |
| 94 | *5[[48]]?:*:*:*) ax_gcc_arch="pentium-mmx pentium" ;; |
| 95 | *5??:*:*:*) ax_gcc_arch=pentium ;; |
| 96 | *0?6[[3456]]?:*:*:*) ax_gcc_arch="pentium2 pentiumpro" ;; |
| 97 | *0?6a?:*[[01]]:*:*) ax_gcc_arch="pentium2 pentiumpro" ;; |
| 98 | *0?6a?:*[[234]]:*:*) ax_gcc_arch="pentium3 pentiumpro" ;; |
| 99 | *0?6[[9de]]?:*:*:*) ax_gcc_arch="pentium-m pentium3 pentiumpro" ;; |
| 100 | *0?6[[78b]]?:*:*:*) ax_gcc_arch="pentium3 pentiumpro" ;; |
| 101 | *0?6f?:*:*:*|*1?66?:*:*:*) ax_gcc_arch="core2 pentium-m pentium3 pentiumpro" ;; |
| 102 | *1?6[[7d]]?:*:*:*) ax_gcc_arch="penryn core2 pentium-m pentium3 pentiumpro" ;; |
| 103 | *1?6[[aef]]?:*:*:*|*2?6[[5cef]]?:*:*:*) ax_gcc_arch="corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| 104 | *1?6c?:*:*:*|*[[23]]?66?:*:*:*) ax_gcc_arch="atom core2 pentium-m pentium3 pentiumpro" ;; |
| 105 | *2?6[[ad]]?:*:*:*) ax_gcc_arch="corei7-avx corei7 core2 pentium-m pentium3 pentiumpro" ;; |
| 106 | *0?6??:*:*:*) ax_gcc_arch=pentiumpro ;; |
| 107 | *6??:*:*:*) ax_gcc_arch="core2 pentiumpro" ;; |
| 108 | ?000?f3[[347]]:*:*:*|?000?f4[1347]:*:*:*|?000?f6?:*:*:*) |
| 109 | case $host_cpu in |
| 110 | x86_64*) ax_gcc_arch="nocona pentium4 pentiumpro" ;; |
| 111 | *) ax_gcc_arch="prescott pentium4 pentiumpro" ;; |
| 112 | esac ;; |
| 113 | ?000?f??:*:*:*) ax_gcc_arch="pentium4 pentiumpro";; |
| 114 | esac ;; |
| 115 | *:68747541:*:*) # AMD |
| 116 | case $ax_cv_gcc_x86_cpuid_1 in |
| 117 | *5[[67]]?:*:*:*) ax_gcc_arch=k6 ;; |
| 118 | *5[[8d]]?:*:*:*) ax_gcc_arch="k6-2 k6" ;; |
| 119 | *5[[9]]?:*:*:*) ax_gcc_arch="k6-3 k6" ;; |
| 120 | *60?:*:*:*) ax_gcc_arch=k7 ;; |
| 121 | *6[[12]]?:*:*:*) ax_gcc_arch="athlon k7" ;; |
| 122 | *6[[34]]?:*:*:*) ax_gcc_arch="athlon-tbird k7" ;; |
| 123 | *67?:*:*:*) ax_gcc_arch="athlon-4 athlon k7" ;; |
| 124 | *6[[68a]]?:*:*:*) |
| 125 | AX_GCC_X86_CPUID(0x80000006) # L2 cache size |
| 126 | case $ax_cv_gcc_x86_cpuid_0x80000006 in |
| 127 | *:*:*[[1-9a-f]]??????:*) # (L2 = ecx >> 16) >= 256 |
| 128 | ax_gcc_arch="athlon-xp athlon-4 athlon k7" ;; |
| 129 | *) ax_gcc_arch="athlon-4 athlon k7" ;; |
| 130 | esac ;; |
| 131 | ?00??f[[4cef8b]]?:*:*:*) ax_gcc_arch="athlon64 k8" ;; |
| 132 | ?00??f5?:*:*:*) ax_gcc_arch="opteron k8" ;; |
| 133 | ?00??f7?:*:*:*) ax_gcc_arch="athlon-fx opteron k8" ;; |
| 134 | ?00??f??:*:*:*) ax_gcc_arch="k8" ;; |
| 135 | ?05??f??:*:*:*) ax_gcc_arch="btver1 amdfam10 k8" ;; |
| 136 | ?06??f??:*:*:*) ax_gcc_arch="bdver1 amdfam10 k8" ;; |
| 137 | *f??:*:*:*) ax_gcc_arch="amdfam10 k8" ;; |
| 138 | esac ;; |
| 139 | *:746e6543:*:*) # IDT |
| 140 | case $ax_cv_gcc_x86_cpuid_1 in |
| 141 | *54?:*:*:*) ax_gcc_arch=winchip-c6 ;; |
| 142 | *58?:*:*:*) ax_gcc_arch=winchip2 ;; |
| 143 | *6[[78]]?:*:*:*) ax_gcc_arch=c3 ;; |
| 144 | *69?:*:*:*) ax_gcc_arch="c3-2 c3" ;; |
| 145 | esac ;; |
| 146 | esac |
| 147 | if test x"$ax_gcc_arch" = x; then # fallback |
| 148 | case $host_cpu in |
| 149 | i586*) ax_gcc_arch=pentium ;; |
| 150 | i686*) ax_gcc_arch=pentiumpro ;; |
| 151 | esac |
| 152 | fi |
| 153 | ;; |
| 154 | |
| 155 | sparc*) |
| 156 | AC_PATH_PROG([PRTDIAG], [prtdiag], [prtdiag], [$PATH:/usr/platform/`uname -i`/sbin/:/usr/platform/`uname -m`/sbin/]) |
| 157 | cputype=`(((grep cpu /proc/cpuinfo | cut -d: -f2) ; ($PRTDIAG -v |grep -i sparc) ; grep -i cpu /var/run/dmesg.boot ) | head -n 1) 2> /dev/null` |
| 158 | cputype=`echo "$cputype" | tr -d ' -' |tr $as_cr_LETTERS $as_cr_letters` |
| 159 | case $cputype in |
| 160 | *ultrasparciv*) ax_gcc_arch="ultrasparc4 ultrasparc3 ultrasparc v9" ;; |
| 161 | *ultrasparciii*) ax_gcc_arch="ultrasparc3 ultrasparc v9" ;; |
| 162 | *ultrasparc*) ax_gcc_arch="ultrasparc v9" ;; |
| 163 | *supersparc*|*tms390z5[[05]]*) ax_gcc_arch="supersparc v8" ;; |
| 164 | *hypersparc*|*rt62[[056]]*) ax_gcc_arch="hypersparc v8" ;; |
| 165 | *cypress*) ax_gcc_arch=cypress ;; |
| 166 | esac ;; |
| 167 | |
| 168 | alphaev5) ax_gcc_arch=ev5 ;; |
| 169 | alphaev56) ax_gcc_arch=ev56 ;; |
| 170 | alphapca56) ax_gcc_arch="pca56 ev56" ;; |
| 171 | alphapca57) ax_gcc_arch="pca57 pca56 ev56" ;; |
| 172 | alphaev6) ax_gcc_arch=ev6 ;; |
| 173 | alphaev67) ax_gcc_arch=ev67 ;; |
| 174 | alphaev68) ax_gcc_arch="ev68 ev67" ;; |
| 175 | alphaev69) ax_gcc_arch="ev69 ev68 ev67" ;; |
| 176 | alphaev7) ax_gcc_arch="ev7 ev69 ev68 ev67" ;; |
| 177 | alphaev79) ax_gcc_arch="ev79 ev7 ev69 ev68 ev67" ;; |
| 178 | |
| 179 | powerpc*) |
| 180 | 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` |
| 181 | cputype=`echo $cputype | sed -e 's/ppc//g;s/ *//g'` |
| 182 | case $cputype in |
| 183 | *750*) ax_gcc_arch="750 G3" ;; |
| 184 | *740[[0-9]]*) ax_gcc_arch="$cputype 7400 G4" ;; |
| 185 | *74[[4-5]][[0-9]]*) ax_gcc_arch="$cputype 7450 G4" ;; |
| 186 | *74[[0-9]][[0-9]]*) ax_gcc_arch="$cputype G4" ;; |
| 187 | *970*) ax_gcc_arch="970 G5 power4";; |
| 188 | *POWER4*|*power4*|*gq*) ax_gcc_arch="power4 970";; |
| 189 | *POWER5*|*power5*|*gr*|*gs*) ax_gcc_arch="power5 power4 970";; |
| 190 | 603ev|8240) ax_gcc_arch="$cputype 603e 603";; |
| 191 | *) ax_gcc_arch=$cputype ;; |
| 192 | esac |
| 193 | ax_gcc_arch="$ax_gcc_arch powerpc" |
| 194 | ;; |
| 195 | esac |
| 196 | fi # not cross-compiling |
| 197 | fi # guess arch |
| 198 | |
| 199 | if test "x$ax_gcc_arch" != x -a "x$ax_gcc_arch" != xno; then |
| 200 | for arch in $ax_gcc_arch; do |
| 201 | if test "x[]m4_default([$1],yes)" = xyes; then # if we require portable code |
| 202 | flags="-mtune=$arch" |
| 203 | # -mcpu=$arch and m$arch generate nonportable code on every arch except |
| 204 | # x86. And some other arches (e.g. Alpha) don't accept -mtune. Grrr. |
| 205 | case $host_cpu in i*86|x86_64*) flags="$flags -mcpu=$arch -m$arch";; esac |
| 206 | else |
| 207 | flags="-march=$arch -mcpu=$arch -m$arch" |
| 208 | fi |
| 209 | for flag in $flags; do |
| 210 | AX_CHECK_COMPILE_FLAG($flag, [ax_cv_gcc_archflag=$flag; break]) |
| 211 | done |
| 212 | test "x$ax_cv_gcc_archflag" = xunknown || break |
| 213 | done |
| 214 | fi |
| 215 | |
| 216 | fi # $GCC=yes |
| 217 | ]) |
| 218 | AC_MSG_CHECKING([for gcc architecture flag]) |
| 219 | AC_MSG_RESULT($ax_cv_gcc_archflag) |
| 220 | if test "x$ax_cv_gcc_archflag" = xunknown; then |
| 221 | m4_default([$3],:) |
| 222 | else |
| 223 | m4_default([$2], [CFLAGS="$CFLAGS $ax_cv_gcc_archflag"]) |
| 224 | fi |
| 225 | ]) |