Commit 6ea7a489 authored by Peter W. Draper's avatar Peter W. Draper
Browse files

Update autoconf macros from http://www.gnu.org/software/autoconf-archive


Former-commit-id: 616cdcb2e1d83ca5bffcd1787df8398b3dbff62b
parent 2a45d7ff
# ===========================================================================
# http://autoconf-archive.cryp.to/ax_cc_maxopt.html
# http://www.gnu.org/software/autoconf-archive/ax_cc_maxopt.html
# ===========================================================================
#
# SYNOPSIS
......@@ -21,7 +21,7 @@
# by the code (e.g. for gcc's -fstrict-aliasing), and that floating-point
# computations can be re-ordered as needed.
#
# Requires macros: AX_CHECK_COMPILER_FLAGS, AX_COMPILER_VENDOR,
# Requires macros: AX_CHECK_COMPILE_FLAG, AX_COMPILER_VENDOR,
# AX_GCC_ARCHFLAG, AX_GCC_X86_CPUID.
#
# LICENSE
......@@ -55,14 +55,16 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 16
AC_DEFUN([AX_CC_MAXOPT],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AX_COMPILER_VENDOR])
AC_REQUIRE([AC_CANONICAL_HOST])
AC_ARG_ENABLE(portable-binary, [AC_HELP_STRING([--enable-portable-binary], [disable compiler optimizations that would produce unportable binaries])],
acx_maxopt_portable=$withval, acx_maxopt_portable=no)
AC_ARG_ENABLE(portable-binary, [AS_HELP_STRING([--enable-portable-binary], [disable compiler optimizations that would produce unportable binaries])],
acx_maxopt_portable=$enableval, acx_maxopt_portable=no)
# Try to determine "good" native compiler flags if none specified via CFLAGS
if test "$ac_test_CFLAGS" != "set"; then
......@@ -88,8 +90,8 @@ if test "$ac_test_CFLAGS" != "set"; then
else
xlc_opt="-qtune=auto"
fi
AX_CHECK_COMPILER_FLAGS($xlc_opt,
CFLAGS="-O3 -qansialias -w $xlc_opt",
AX_CHECK_COMPILE_FLAG($xlc_opt,
CFLAGS="-O3 -qansialias -w $xlc_opt",
[CFLAGS="-O3 -qansialias -w"
echo "******************************************************"
echo "* You seem to have the IBM C compiler. It is *"
......@@ -113,17 +115,25 @@ if test "$ac_test_CFLAGS" != "set"; then
AX_GCC_X86_CPUID(0)
AX_GCC_X86_CPUID(1)
case $ax_cv_gcc_x86_cpuid_0 in # see AX_GCC_ARCHFLAG
*:756e6547:*:*) # Intel
*:756e6547:6c65746e:49656e69) # Intel
case $ax_cv_gcc_x86_cpuid_1 in
*6a?:*[[234]]:*:*|*6[[789b]]?:*:*:*) icc_flags="-xK";;
*f3[[347]]:*:*:*|*f4[1347]:*:*:*) icc_flags="-xP -xN -xW -xK";;
*f??:*:*:*) icc_flags="-xN -xW -xK";;
*0?6[[78ab]]?:*:*:*|?6[[78ab]]?:*:*:*|6[[78ab]]?:*:*:*) icc_flags="-xK" ;;
*0?6[[9d]]?:*:*:*|?6[[9d]]?:*:*:*|6[[9d]]?:*:*:*|*1?65?:*:*:*) icc_flags="-xSSE2 -xB -xK" ;;
*0?6e?:*:*:*|?6e?:*:*:*|6e?:*:*:*) icc_flags="-xSSE3 -xP -xO -xB -xK" ;;
*0?6f?:*:*:*|?6f?:*:*:*|6f?:*:*:*|*1?66?:*:*:*) icc_flags="-xSSSE3 -xT -xB -xK" ;;
*1?6[[7d]]?:*:*:*) icc_flags="-xSSE4.1 -xS -xT -xB -xK" ;;
*1?6[[aef]]?:*:*:*|*2?6[[5cef]]?:*:*:*) icc_flags="-xSSE4.2 -xS -xT -xB -xK" ;;
*2?6[[ad]]?:*:*:*) icc_flags="-xAVX -SSE4.2 -xS -xT -xB -xK" ;;
*3?6[[ae]]?:*:*:*) icc_flags="-xCORE-AVX-I -xAVX -SSE4.2 -xS -xT -xB -xK" ;;
*3?6[[cf]]?:*:*:*|*4?6[[56]]?:*:*:*) icc_flags="-xCORE-AVX2 -xCORE-AVX-I -xAVX -SSE4.2 -xS -xT -xB -xK" ;;
*000?f[[346]]?:*:*:*|?f[[346]]?:*:*:*|f[[346]]?:*:*:*) icc_flags="-xSSE3 -xP -xO -xN -xW -xK" ;;
*00??f??:*:*:*|??f??:*:*:*|?f??:*:*:*|f??:*:*:*) icc_flags="-xSSE2 -xN -xW -xK" ;;
esac ;;
esac ;;
esac
if test "x$icc_flags" != x; then
for flag in $icc_flags; do
AX_CHECK_COMPILER_FLAGS($flag, [icc_archflag=$flag; break])
AX_CHECK_COMPILE_FLAG($flag, [icc_archflag=$flag; break])
done
fi
AC_MSG_CHECKING([for icc architecture flag])
......@@ -139,17 +149,22 @@ if test "$ac_test_CFLAGS" != "set"; then
CFLAGS="-O3 -fomit-frame-pointer"
# -malign-double for x86 systems
AX_CHECK_COMPILER_FLAGS(-malign-double, CFLAGS="$CFLAGS -malign-double")
AX_CHECK_COMPILE_FLAG(-malign-double, CFLAGS="$CFLAGS -malign-double")
# -fstrict-aliasing for gcc-2.95+
AX_CHECK_COMPILER_FLAGS(-fstrict-aliasing,
AX_CHECK_COMPILE_FLAG(-fstrict-aliasing,
CFLAGS="$CFLAGS -fstrict-aliasing")
# note that we enable "unsafe" fp optimization with other compilers, too
AX_CHECK_COMPILER_FLAGS(-ffast-math, CFLAGS="$CFLAGS -ffast-math")
AX_CHECK_COMPILE_FLAG(-ffast-math, CFLAGS="$CFLAGS -ffast-math")
AX_GCC_ARCHFLAG($acx_maxopt_portable)
;;
microsoft)
# default optimization flags for MSVC opt builds
CFLAGS="-O2"
;;
esac
if test -z "$CFLAGS"; then
......@@ -163,7 +178,7 @@ if test "$ac_test_CFLAGS" != "set"; then
CFLAGS="-O3"
fi
AX_CHECK_COMPILER_FLAGS($CFLAGS, [], [
AX_CHECK_COMPILE_FLAG($CFLAGS, [], [
echo ""
echo "********************************************************"
echo "* WARNING: The guessed CFLAGS don't seem to work with *"
......
......@@ -4,7 +4,7 @@
#
# SYNOPSIS
#
# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
......@@ -19,6 +19,8 @@
# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
# force the compiler to issue an error when a bad flag is given.
#
# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
#
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
......@@ -53,19 +55,19 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 2
#serial 4
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
AS_VAR_IF(CACHEVAR,yes,
[m4_default([$2], :)],
[m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
......
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_check_zlib.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_ZLIB([action-if-found], [action-if-not-found])
#
# DESCRIPTION
#
# This macro searches for an installed zlib library. If nothing was
# specified when calling configure, it searches first in /usr/local and
# then in /usr, /opt/local and /sw. If the --with-zlib=DIR is specified,
# it will try to find it in DIR/include/zlib.h and DIR/lib/libz.a. If
# --without-zlib is specified, the library is not searched at all.
#
# If either the header file (zlib.h) or the library (libz) is not found,
# shell commands 'action-if-not-found' is run. If 'action-if-not-found' is
# not specified, the configuration exits on error, asking for a valid zlib
# installation directory or --without-zlib.
#
# If both header file and library are found, shell commands
# 'action-if-found' is run. If 'action-if-found' is not specified, the
# default action appends '-I${ZLIB_HOME}/include' to CPFLAGS, appends
# '-L$ZLIB_HOME}/lib' to LDFLAGS, prepends '-lz' to LIBS, and calls
# AC_DEFINE(HAVE_LIBZ). You should use autoheader to include a definition
# for this symbol in a config.h file. Sample usage in a C/C++ source is as
# follows:
#
# #ifdef HAVE_LIBZ
# #include <zlib.h>
# #endif /* HAVE_LIBZ */
#
# LICENSE
#
# Copyright (c) 2008 Loic Dachary <loic@senga.org>
# Copyright (c) 2010 Bastien Chevreux <bach@chevreux.org>
#
# 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 2 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 <http://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 14
AU_ALIAS([CHECK_ZLIB], [AX_CHECK_ZLIB])
AC_DEFUN([AX_CHECK_ZLIB],
#
# Handle user hints
#
[AC_MSG_CHECKING(if zlib is wanted)
zlib_places="/usr/local /usr /opt/local /sw"
AC_ARG_WITH([zlib],
[ --with-zlib=DIR root directory path of zlib installation @<:@defaults to
/usr/local or /usr if not found in /usr/local@:>@
--without-zlib to disable zlib usage completely],
[if test "$withval" != no ; then
AC_MSG_RESULT(yes)
if test -d "$withval"
then
zlib_places="$withval $zlib_places"
else
AC_MSG_WARN([Sorry, $withval does not exist, checking usual places])
fi
else
zlib_places=
AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(yes)])
#
# Locate zlib, if wanted
#
if test -n "${zlib_places}"
then
# check the user supplied or any other more or less 'standard' place:
# Most UNIX systems : /usr/local and /usr
# MacPorts / Fink on OSX : /opt/local respectively /sw
for ZLIB_HOME in ${zlib_places} ; do
if test -f "${ZLIB_HOME}/include/zlib.h"; then break; fi
ZLIB_HOME=""
done
ZLIB_OLD_LDFLAGS=$LDFLAGS
ZLIB_OLD_CPPFLAGS=$CPPFLAGS
if test -n "${ZLIB_HOME}"; then
LDFLAGS="$LDFLAGS -L${ZLIB_HOME}/lib"
CPPFLAGS="$CPPFLAGS -I${ZLIB_HOME}/include"
fi
AC_LANG_SAVE
AC_LANG_C
AC_CHECK_LIB([z], [inflateEnd], [zlib_cv_libz=yes], [zlib_cv_libz=no])
AC_CHECK_HEADER([zlib.h], [zlib_cv_zlib_h=yes], [zlib_cv_zlib_h=no])
AC_LANG_RESTORE
if test "$zlib_cv_libz" = "yes" && test "$zlib_cv_zlib_h" = "yes"
then
#
# If both library and header were found, action-if-found
#
m4_ifblank([$1],[
CPPFLAGS="$CPPFLAGS -I${ZLIB_HOME}/include"
LDFLAGS="$LDFLAGS -L${ZLIB_HOME}/lib"
LIBS="-lz $LIBS"
AC_DEFINE([HAVE_LIBZ], [1],
[Define to 1 if you have `z' library (-lz)])
],[
# Restore variables
LDFLAGS="$ZLIB_OLD_LDFLAGS"
CPPFLAGS="$ZLIB_OLD_CPPFLAGS"
$1
])
else
#
# If either header or library was not found, action-if-not-found
#
m4_default([$2],[
AC_MSG_ERROR([either specify a valid zlib installation with --with-zlib=DIR or disable zlib usage with --without-zlib])
])
fi
fi
])
# ===========================================================================
# http://autoconf-archive.cryp.to/ax_compiler_vendor.html
# http://www.gnu.org/software/autoconf-archive/ax_compiler_vendor.html
# ===========================================================================
#
# SYNOPSIS
......@@ -44,18 +44,44 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 15
AC_DEFUN([AX_COMPILER_VENDOR],
[
AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
[ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
# note: don't check for gcc first since some other compilers define __GNUC__
for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ pathscale:__PATHCC__,__PATHSCALE__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
[AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
dnl Please add if possible support to ax_compiler_version.m4
[# note: don't check for gcc first since some other compilers define __GNUC__
vendors="intel: __ICC,__ECC,__INTEL_COMPILER
ibm: __xlc__,__xlC__,__IBMC__,__IBMCPP__
pathscale: __PATHCC__,__PATHSCALE__
clang: __clang__
cray: _CRAYC
fujitsu: __FUJITSU
gnu: __GNUC__
sun: __SUNPRO_C,__SUNPRO_CC
hp: __HP_cc,__HP_aCC
dec: __DECC,__DECCXX,__DECC_VER,__DECCXX_VER
borland: __BORLANDC__,__CODEGEARC__,__TURBOC__
comeau: __COMO__
kai: __KCC
lcc: __LCC__
sgi: __sgi,sgi
microsoft: _MSC_VER
metrowerks: __MWERKS__
watcom: __WATCOMC__
portland: __PGI
tcc: __TINYC__
unknown: UNKNOWN"
for ventest in $vendors; do
case $ventest in
*:) vendor=$ventest; continue ;;
*) vencpp="defined("`echo $ventest | sed 's/,/) || defined(/g'`")" ;;
esac
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
#if !($vencpp)
thisisanerror;
#endif
])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
#if !($vencpp)
thisisanerror;
#endif
])], [break])
done
ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=`echo $vendor | cut -d: -f1`
])
])
......@@ -9,9 +9,9 @@
# DESCRIPTION
#
# Find supported SIMD extensions by requesting cpuid. When an SIMD
# extension is found, the -m"simdextensionname" is added to SIMD_FLAGS
# (only if compilator support it) (ie : if "sse2" is available "-msse2" is
# added to SIMD_FLAGS)
# extension is found, the -m"simdextensionname" is added to SIMD_FLAGS if
# compiler supports it. For example, if "sse2" is available, then "-msse2"
# is added to SIMD_FLAGS.
#
# This macro calls:
#
......@@ -19,131 +19,225 @@
#
# And defines:
#
# HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3 /
# HAVE_SSE41 / HAVE_SSE42 / HAVE_AVX
# HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3 / HAVE_SSE4.1 / HAVE_SSE4.2 / HAVE_AVX
#
# LICENSE
#
# Copyright (c) 2008 Christophe Tournayre <turn3r@users.sourceforge.net>
# Copyright (c) 2007 Christophe Tournayre <turn3r@users.sourceforge.net>
# Copyright (c) 2013 Michael Petch <mpetch@capp-sysware.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 9
#serial 13
AC_DEFUN([AX_EXT],
[
AC_REQUIRE([AX_GCC_X86_CPUID])
AX_GCC_X86_CPUID(0x00000001)
ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext],
[
ax_cv_have_mmx_ext=no
if test "$((0x$edx>>23&0x01))" = 1; then
ax_cv_have_mmx_ext=yes
fi
])
AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext],
[
ax_cv_have_sse_ext=no
if test "$((0x$edx>>25&0x01))" = 1; then
ax_cv_have_sse_ext=yes
fi
])
AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext],
[
ax_cv_have_sse2_ext=no
if test "$((0x$edx>>26&0x01))" = 1; then
ax_cv_have_sse2_ext=yes
fi
])
AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext],
[
ax_cv_have_sse3_ext=no
if test "$((0x$ecx&0x01))" = 1; then
ax_cv_have_sse3_ext=yes
fi
])
AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext],
[
ax_cv_have_ssse3_ext=no
if test "$((0x$ecx>>9&0x01))" = 1; then
ax_cv_have_ssse3_ext=yes
fi
])
AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext],
[
ax_cv_have_sse41_ext=no
if test "$((0x$ecx>>19&0x01))" = 1; then
ax_cv_have_sse41_ext=yes
fi
])
AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext],
[
ax_cv_have_sse42_ext=no
if test "$((0x$ecx>>20&0x01))" = 1; then
ax_cv_have_sse42_ext=yes
fi
])
AC_CACHE_CHECK([whether avx is supported], [ax_cv_have_avx_ext],
[
ax_cv_have_avx_ext=no
if test "$((0x$ecx>>28&0x01))" = 1; then
ax_cv_have_avx_ext=yes
fi
])
if test "$ax_cv_have_mmx_ext" = yes; then
AC_DEFINE(HAVE_MMX,, [Support MMX instructions])
AX_CHECK_COMPILE_FLAG(-mmmx, SIMD_FLAGS="$SIMD_FLAGS -mmmx", [])
fi
if test "$ax_cv_have_sse_ext" = yes; then
AC_DEFINE(HAVE_SSE,, [Support SSE (Streaming SIMD Extensions) instructions])
AX_CHECK_COMPILE_FLAG(-msse, SIMD_FLAGS="$SIMD_FLAGS -msse", [])
fi
if test "$ax_cv_have_sse2_ext" = yes; then
AC_DEFINE(HAVE_SSE2,, [Support SSE2 (Streaming SIMD Extensions 2) instructions])
AX_CHECK_COMPILE_FLAG(-msse2, SIMD_FLAGS="$SIMD_FLAGS -msse2", [])
fi
if test "$ax_cv_have_sse3_ext" = yes; then
AC_DEFINE(HAVE_SSE3,, [Support SSE3 (Streaming SIMD Extensions 3) instructions])
AX_CHECK_COMPILE_FLAG(-msse3, SIMD_FLAGS="$SIMD_FLAGS -msse3", [])
fi
if test "$ax_cv_have_ssse3_ext" = yes; then
AC_DEFINE(HAVE_SSSE3,, [Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
AX_CHECK_COMPILE_FLAG(-mssse3, SIMD_FLAGS="$SIMD_FLAGS -mssse3", [])
fi
if test "$ax_cv_have_sse41_ext" = yes; then
AC_DEFINE(HAVE_SSE41,, [Support SSE4.1 (Streaming SIMD Extensions 4.1) instructions])
AX_CHECK_COMPILE_FLAG(-msse4.1, SIMD_FLAGS="$SIMD_FLAGS -msse4.1", [])
fi
if test "$ax_cv_have_sse42_ext" = yes; then
AC_DEFINE(HAVE_SSE42, 1,[Support SSE4.2 (Streaming SIMD Extensions 4.2) instructions])
AX_CHECK_COMPILE_FLAG(-msse4.2, SIMD_FLAGS="$SIMD_FLAGS -msse4.2", [])
fi
if test "$ax_cv_have_avx_ext" = yes; then
AC_DEFINE(HAVE_AVX,,[Support AVX (Advanced Vector Extensions) instructions])
AX_CHECK_COMPILE_FLAG(-mavx, SIMD_FLAGS="$SIMD_FLAGS -mavx", [])
fi
AC_REQUIRE([AC_CANONICAL_HOST])
case $host_cpu in
powerpc*)
AC_CACHE_CHECK([whether altivec is supported], [ax_cv_have_altivec_ext],
[
if test `/usr/sbin/sysctl -a 2>/dev/null| grep -c hw.optional.altivec` != 0; then
if test `/usr/sbin/sysctl -n hw.optional.altivec` = 1; then
ax_cv_have_altivec_ext=yes
fi
fi
])
if test "$ax_cv_have_altivec_ext" = yes; then
AC_DEFINE(HAVE_ALTIVEC,,[Support Altivec instructions])
AX_CHECK_COMPILE_FLAG(-faltivec, SIMD_FLAGS="$SIMD_FLAGS -faltivec", [])
fi
;;
i[[3456]]86*|x86_64*|amd64*)
AC_REQUIRE([AX_GCC_X86_CPUID])
AC_REQUIRE([AX_GCC_X86_AVX_XGETBV])
AX_GCC_X86_CPUID(0x00000001)
ecx=0
edx=0
if test "$ax_cv_gcc_x86_cpuid_0x00000001" != "unknown";
then
ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
fi
AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext],
[
ax_cv_have_mmx_ext=no
if test "$((0x$edx>>23&0x01))" = 1; then
ax_cv_have_mmx_ext=yes
fi
])
AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext],
[
ax_cv_have_sse_ext=no
if test "$((0x$edx>>25&0x01))" = 1; then
ax_cv_have_sse_ext=yes
fi
])
AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext],
[
ax_cv_have_sse2_ext=no
if test "$((0x$edx>>26&0x01))" = 1; then
ax_cv_have_sse2_ext=yes
fi
])
AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext],
[
ax_cv_have_sse3_ext=no
if test "$((0x$ecx&0x01))" = 1; then
ax_cv_have_sse3_ext=yes
fi
])
AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext],
[
ax_cv_have_ssse3_ext=no
if test "$((0x$ecx>>9&0x01))" = 1; then
ax_cv_have_ssse3_ext=yes
fi
])
AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext],
[
ax_cv_have_sse41_ext=no
if test "$((0x$ecx>>19&0x01))" = 1; then
ax_cv_have_sse41_ext=yes
fi
])
AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext],
[
ax_cv_have_sse42_ext=no
if test "$((0x$ecx>>20&0x01))" = 1; then
ax_cv_have_sse42_ext=yes
fi
])
AC_CACHE_CHECK([whether avx is supported by processor], [ax_cv_have_avx_cpu_ext],
[
ax_cv_have_avx_cpu_ext=no
if test "$((0x$ecx>>28&0x01))" = 1; then
ax_cv_have_avx_cpu_ext=yes
fi
])
if test x"$ax_cv_have_avx_cpu_ext" = x"yes"; then
AX_GCC_X86_AVX_XGETBV(0x00000000)
xgetbv_eax="0"
if test x"$ax_cv_gcc_x86_avx_xgetbv_0x00000000" != x"unknown"; then
xgetbv_eax=`echo $ax_cv_gcc_x86_avx_xgetbv_0x00000000 | cut -d ":" -f 1`
fi
AC_CACHE_CHECK([whether avx is supported by operating system], [ax_cv_have_avx_ext],
[
ax_cv_have_avx_ext=no
if test "$((0x$ecx>>27&0x01))" = 1; then
if test "$((0x$xgetbv_eax&0x6))" = 6; then
ax_cv_have_avx_ext=yes
fi
fi
])
if test x"$ax_cv_have_avx_ext" = x"no"; then
AC_MSG_WARN([Your processor supports AVX, but your operating system doesn't])
fi
fi
if test "$ax_cv_have_mmx_ext" = yes; then
AX_CHECK_COMPILE_FLAG(-mmmx, ax_cv_support_mmx_ext=yes, [])
if test x"$ax_cv_support_mmx_ext" = x"yes"; then
SIMD_FLAGS="$SIMD_FLAGS -mmmx"
AC_DEFINE(HAVE_MMX,,[Support mmx instructions])
else
AC_MSG_WARN([Your processor supports mmx instructions but not your compiler, can you try another compiler?])
fi
fi
if test "$ax_cv_have_sse_ext" = yes; then
AX_CHECK_COMPILE_FLAG(-msse, ax_cv_support_sse_ext=yes, [])
if test x"$ax_cv_support_sse_ext" = x"yes"; then
SIMD_FLAGS="$SIMD_FLAGS -msse"
AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions])
else
AC_MSG_WARN([Your processor supports sse instructions but not your compiler, can you try another compiler?])
fi
fi
if test "$ax_cv_have_sse2_ext" = yes; then
AX_CHECK_COMPILE_FLAG(-msse2, ax_cv_support_sse2_ext=yes, [])
if test x"$ax_cv_support_sse2_ext" = x"yes"; then
SIMD_FLAGS="$SIMD_FLAGS -msse2"
AC_DEFINE(HAVE_SSE2,,[Support SSE2 (Streaming SIMD Extensions 2) instructions])
else
AC_MSG_WARN([Your processor supports sse2 instructions but not your compiler, can you try another compiler?])
fi
fi
if test "$ax_cv_have_sse3_ext" = yes; then
AX_CHECK_COMPILE_FLAG(-msse3, ax_cv_support_sse3_ext=yes, [])
if test x"$ax_cv_support_sse3_ext" = x"yes"; then
SIMD_FLAGS="$SIMD_FLAGS -msse3"
AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions])
else
AC_MSG_WARN([Your processor supports sse3 instructions but not your compiler, can you try another compiler?])
fi
fi