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| author | Alexey Kopytov <akopytov@gmail.com> | 2017-01-06 19:57:45 +0300 |
|---|---|---|
| committer | Alexey Kopytov <akopytov@gmail.com> | 2017-01-06 20:04:07 +0300 |
| commit | 67395762a22cfb27bfdde5884938a0720722ab23 (patch) | |
| tree | fd0a1c3afabf43de0271ffc06960c8dde4c6c4a8 /m4/ax_gcc_archflag.m4 | |
| parent | 4903696caa6862e9108f0b061dc1a0fba1145f4d (diff) | |
| download | autoconf-archive-67395762a22cfb27bfdde5884938a0720722ab23.tar.gz | |
Add code to detect ThunderX to AX_GCC_ARCHFLAG.
Update AX_GCC_ARCHFLAG to detect ThunderX (an AArch64 CPU by Cavium) and
set -march/-mcpu accordingly depending on the CPU generation and
compiler support.
Diffstat (limited to 'm4/ax_gcc_archflag.m4')
| -rw-r--r-- | m4/ax_gcc_archflag.m4 | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/m4/ax_gcc_archflag.m4 b/m4/ax_gcc_archflag.m4 index 0d0bf43..6a5e5e3 100644 --- a/m4/ax_gcc_archflag.m4 +++ b/m4/ax_gcc_archflag.m4 @@ -37,6 +37,7 @@ # 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 @@ -64,7 +65,7 @@ # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. -#serial 17 +#serial 18 AC_DEFUN([AX_GCC_ARCHFLAG], [AC_REQUIRE([AC_PROG_CC]) @@ -201,6 +202,21 @@ case $host_cpu in esac ax_gcc_arch="$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 + 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 |