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acinclude.m4
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acinclude.m4
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# ===========================================================================
# http://autoconf-archive.cryp.to/acx_pthread.html
# ===========================================================================
#
# SYNOPSIS
#
# ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
#
# DESCRIPTION
#
# This macro figures out how to build C programs using POSIX threads. It
# sets the PTHREAD_LIBS output variable to the threads library and linker
# flags, and the PTHREAD_CFLAGS output variable to any special C compiler
# flags that are needed. (The user can also force certain compiler
# flags/libs to be tested by setting these environment variables.)
#
# Also sets PTHREAD_CC to any special C compiler that is needed for
# multi-threaded programs (defaults to the value of CC otherwise). (This
# is necessary on AIX to use the special cc_r compiler alias.)
#
# NOTE: You are assumed to not only compile your program with these flags,
# but also link it with them as well. e.g. you should link with
# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
#
# If you are only building threads programs, you may wish to use these
# variables in your default LIBS, CFLAGS, and CC:
#
# LIBS="$PTHREAD_LIBS $LIBS"
# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
# CC="$PTHREAD_CC"
#
# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
# (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
#
# ACTION-IF-FOUND is a list of shell commands to run if a threads library
# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
# is not found. If ACTION-IF-FOUND is not specified, the default action
# will define HAVE_PTHREAD.
#
# Please let the authors know if this macro fails on any platform, or if
# you have any other suggestions or comments. This macro was based on work
# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
# Alejandro Forero Cuervo to the autoconf macro repository. We are also
# grateful for the helpful feedback of numerous users.
#
# LAST MODIFICATION
#
# 2008-04-12
#
# COPYLEFT
#
# Copyright (c) 2008 Steven G. Johnson <[email protected]>
#
# 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 <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 Macro 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.
AC_DEFUN([ACX_PTHREAD], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_LANG_SAVE
AC_LANG_C
acx_pthread_ok=no
# We used to check for pthread.h first, but this fails if pthread.h
# requires special compiler flags (e.g. on True64 or Sequent).
# It gets checked for in the link test anyway.
# First of all, check if the user has set any of the PTHREAD_LIBS,
# etcetera environment variables, and if threads linking works using
# them:
if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
AC_MSG_RESULT($acx_pthread_ok)
if test x"$acx_pthread_ok" = xno; then
PTHREAD_LIBS=""
PTHREAD_CFLAGS=""
fi
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
fi
# We must check for the threads library under a number of different
# names; the ordering is very important because some systems
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
# libraries is broken (non-POSIX).
# Create a list of thread flags to try. Items starting with a "-" are
# C compiler flags, and other items are library names, except for "none"
# which indicates that we try without any flags at all, and "pthread-config"
# which is a program returning the flags for the Pth emulation library.
acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
# The ordering *is* (sometimes) important. Some notes on the
# individual items follow:
# pthreads: AIX (must check this before -lpthread)
# none: in case threads are in libc; should be tried before -Kthread and
# other compiler flags to prevent continual compiler warnings
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
# -pthreads: Solaris/gcc
# -mthreads: Mingw32/gcc, Lynx/gcc
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
# doesn't hurt to check since this sometimes defines pthreads too;
# also defines -D_REENTRANT)
# ... -mt is also the pthreads flag for HP/aCC
# pthread: Linux, etcetera
# --thread-safe: KAI C++
# pthread-config: use pthread-config program (for GNU Pth library)
case "${host_cpu}-${host_os}" in
*solaris*)
# On Solaris (at least, for some versions), libc contains stubbed
# (non-functional) versions of the pthreads routines, so link-based
# tests will erroneously succeed. (We need to link with -pthreads/-mt/
# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
# a function called by this macro, so we could check for that, but
# who knows whether they'll stub that too in a future libc.) So,
# we'll just look for -pthreads and -lpthread first:
acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
;;
esac
if test x"$acx_pthread_ok" = xno; then
for flag in $acx_pthread_flags; do
case $flag in
none)
AC_MSG_CHECKING([whether pthreads work without any flags])
;;
-*)
AC_MSG_CHECKING([whether pthreads work with $flag])
PTHREAD_CFLAGS="$flag"
;;
pthread-config)
AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
if test x"$acx_pthread_config" = xno; then continue; fi
PTHREAD_CFLAGS="`pthread-config --cflags`"
PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
;;
*)
AC_MSG_CHECKING([for the pthreads library -l$flag])
PTHREAD_LIBS="-l$flag"
;;
esac
save_LIBS="$LIBS"
save_CFLAGS="$CFLAGS"
LIBS="$PTHREAD_LIBS $LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
# Check for various functions. We must include pthread.h,
# since some functions may be macros. (On the Sequent, we
# need a special flag -Kthread to make this header compile.)
# We check for pthread_join because it is in -lpthread on IRIX
# while pthread_create is in libc. We check for pthread_attr_init
# due to DEC craziness with -lpthreads. We check for
# pthread_cleanup_push because it is one of the few pthread
# functions on Solaris that doesn't have a non-functional libc stub.
# We try pthread_create on general principles.
AC_TRY_LINK([#include <pthread.h>],
[pthread_t th; pthread_join(th, 0);
pthread_attr_init(0); pthread_cleanup_push(0, 0);
pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
[acx_pthread_ok=yes])
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
AC_MSG_RESULT($acx_pthread_ok)
if test "x$acx_pthread_ok" = xyes; then
break;
fi
PTHREAD_LIBS=""
PTHREAD_CFLAGS=""
done
fi
# Various other checks:
if test "x$acx_pthread_ok" = xyes; then
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
AC_MSG_CHECKING([for joinable pthread attribute])
attr_name=unknown
for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
[attr_name=$attr; break])
done
AC_MSG_RESULT($attr_name)
if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
[Define to necessary symbol if this constant
uses a non-standard name on your system.])
fi
AC_MSG_CHECKING([if more special flags are required for pthreads])
flag=no
case "${host_cpu}-${host_os}" in
*-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
*solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
esac
AC_MSG_RESULT(${flag})
if test "x$flag" != xno; then
PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
fi
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
# More AIX lossage: must compile with xlc_r or cc_r
if test x"$GCC" != xyes; then
AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
else
PTHREAD_CC=$CC
fi
else
PTHREAD_CC="$CC"
fi
AC_SUBST(PTHREAD_LIBS)
AC_SUBST(PTHREAD_CFLAGS)
AC_SUBST(PTHREAD_CC)
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x"$acx_pthread_ok" = xyes; then
ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
:
else
acx_pthread_ok=no
$2
fi
AC_LANG_RESTORE
])dnl ACX_PTHREAD
dnl a macro to check for ability to create python extensions
dnl AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
dnl function also defines PYTHON_INCLUDES
AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
[AC_REQUIRE([AM_PATH_PYTHON])
AC_MSG_CHECKING(for headers required to compile python extensions)
dnl deduce PYTHON_INCLUDES
py_prefix=`$PYTHON -c "import sys; sys.stdout.write(sys.prefix)"`
py_exec_prefix=`$PYTHON -c "import sys; sys.stdout.write(sys.exec_prefix)"`
if test -x "$PYTHON-config"; then
PYTHON_INCLUDES=`$PYTHON-config --includes 2>/dev/null`
else
PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
if test "$py_prefix" != "$py_exec_prefix"; then
PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
fi
if test "${IS_WINDOWS}" = "yes"; then
PYTHON_INCLUDES=`echo $PYTHON_INCLUDES -I${py_prefix}/include | sed s%\\\\\\\\%/%g`
PYTHON_VER=`echo ${PYTHON_VERSION} | sed s:\\\\.::`
PYTHON_LIBS=`echo -L${py_prefix}/libs -lpython${PYTHON_VER} | sed s%\\\\\\\\%/%g`
fi
fi
AC_SUBST(PYTHON_INCLUDES)
AC_SUBST(PYTHON_LIBS)
dnl check if the headers exist:
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
AC_TRY_CPP([#include <Python.h>],dnl
[AC_MSG_RESULT(found)
$1],dnl
[AC_MSG_RESULT(not found)
$2])
CPPFLAGS="$save_CPPFLAGS"
])
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_check_compiler_flags.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_COMPILER_FLAGS(FLAGS, [ACTION-SUCCESS], [ACTION-FAILURE])
#
# DESCRIPTION
#
# Check whether the given compiler FLAGS work with the current language's
# compiler, or whether they give an error. (Warnings, however, are
# ignored.)
#
# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
# success/failure.
#
# LICENSE
#
# Copyright (c) 2009 Steven G. Johnson <[email protected]>
# Copyright (c) 2009 Matteo Frigo
#
# 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 <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.
AC_DEFUN([AX_CHECK_COMPILER_FLAGS],
[AC_PREREQ(2.59) dnl for _AC_LANG_PREFIX
AC_MSG_CHECKING([whether _AC_LANG compiler accepts $1])
dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname:
AS_LITERAL_IF([$1],
[AC_CACHE_VAL(AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1]), [
ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=yes,
AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=no)
_AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])],
[ax_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=yes,
eval AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])=no)
_AC_LANG_PREFIX[]FLAGS=$ax_save_FLAGS])
eval ax_check_compiler_flags=$AS_TR_SH(ax_cv_[]_AC_LANG_ABBREV[]_flags_[$1])
AC_MSG_RESULT($ax_check_compiler_flags)
if test "x$ax_check_compiler_flags" = xyes; then
m4_default([$2], :)
else
m4_default([$3], :)
fi
])dnl AX_CHECK_COMPILER_FLAGS
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_gcc_x86_cpuid.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_GCC_X86_CPUID(OP)
#
# DESCRIPTION
#
# On Pentium and later x86 processors, with gcc or a compiler that has a
# compatible syntax for inline assembly instructions, run a small program
# that executes the cpuid instruction with input OP. This can be used to
# detect the CPU type.
#
# On output, the values of the eax, ebx, ecx, and edx registers are stored
# as hexadecimal strings as "eax:ebx:ecx:edx" in the cache variable
# ax_cv_gcc_x86_cpuid_OP.
#
# If the cpuid instruction fails (because you are running a
# cross-compiler, or because you are not using gcc, or because you are on
# a processor that doesn't have this instruction), ax_cv_gcc_x86_cpuid_OP
# is set to the string "unknown".
#
# This macro mainly exists to be used in AX_GCC_ARCHFLAG.
#
# LICENSE
#
# Copyright (c) 2008 Steven G. Johnson <[email protected]>
# Copyright (c) 2008 Matteo Frigo
#
# 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 <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.
AC_DEFUN([AX_GCC_X86_CPUID],
[AC_REQUIRE([AC_PROG_CC])
AC_LANG_PUSH([C])
AC_CACHE_CHECK(for x86 cpuid $1 output, ax_cv_gcc_x86_cpuid_$1,
[AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [
int op = $1, eax, ebx, ecx, edx;
FILE *f;
__asm__("cpuid"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "a" (op));
f = fopen("conftest_cpuid", "w"); if (!f) return 1;
fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx);
fclose(f);
return 0;
])],
[ax_cv_gcc_x86_cpuid_$1=`cat conftest_cpuid`; rm -f conftest_cpuid],
[ax_cv_gcc_x86_cpuid_$1=unknown; rm -f conftest_cpuid],
[ax_cv_gcc_x86_cpuid_$1=unknown])])
AC_LANG_POP([C])
])
# ===========================================================================
# http://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 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_COMPILER_FLAGS, 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 <[email protected]>
# Copyright (c) 2008 Matteo Frigo
#
# 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 <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.
AC_DEFUN([AX_GCC_ARCHFLAG],
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST])
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*) # use cpuid codes, in part from x86info-1.7 by D. Jones
AX_GCC_X86_CPUID(0)
AX_GCC_X86_CPUID(1)
case $ax_cv_gcc_x86_cpuid_0 in
*:756e6547:*:*) # Intel
case $ax_cv_gcc_x86_cpuid_1 in
*5[[48]]?:*:*:*) ax_gcc_arch="pentium-mmx pentium" ;;
*5??:*:*:*) ax_gcc_arch=pentium ;;
*6[[3456]]?:*:*:*) ax_gcc_arch="pentium2 pentiumpro" ;;
*6a?:*[[01]]:*:*) ax_gcc_arch="pentium2 pentiumpro" ;;
*6a?:*[[234]]:*:*) ax_gcc_arch="pentium3 pentiumpro" ;;
*6[[9d]]?:*:*:*) ax_gcc_arch="pentium-m pentium3 pentiumpro" ;;
*6[[78b]]?:*:*:*) ax_gcc_arch="pentium3 pentiumpro" ;;
*6??:*:*:*) ax_gcc_arch=pentiumpro ;;
*f3[[347]]:*:*:*|*f4[1347]:*:*:*)
case $host_cpu in
x86_64*) ax_gcc_arch="nocona pentium4 pentiumpro" ;;
*) ax_gcc_arch="prescott pentium4 pentiumpro" ;;
esac ;;
*f??:*:*:*) ax_gcc_arch="pentium4 pentiumpro";;
esac ;;
*:68747541:*:*) # AMD
case $ax_cv_gcc_x86_cpuid_1 in
*5[[67]]?:*:*:*) ax_gcc_arch=k6 ;;
*5[[8d]]?:*:*:*) ax_gcc_arch="k6-2 k6" ;;
*5[[9]]?:*:*:*) ax_gcc_arch="k6-3 k6" ;;
*60?:*:*:*) ax_gcc_arch=k7 ;;
*6[[12]]?:*:*:*) ax_gcc_arch="athlon k7" ;;
*6[[34]]?:*:*:*) ax_gcc_arch="athlon-tbird k7" ;;
*67?:*:*:*) ax_gcc_arch="athlon-4 athlon k7" ;;
*6[[68a]]?:*:*:*)
AX_GCC_X86_CPUID(0x80000006) # L2 cache size
case $ax_cv_gcc_x86_cpuid_0x80000006 in
*:*:*[[1-9a-f]]??????:*) # (L2 = ecx >> 16) >= 256
ax_gcc_arch="athlon-xp athlon-4 athlon k7" ;;
*) ax_gcc_arch="athlon-4 athlon k7" ;;
esac ;;
*f[[4cef8b]]?:*:*:*) ax_gcc_arch="athlon64 k8" ;;
*f5?:*:*:*) ax_gcc_arch="opteron k8" ;;
*f7?:*:*:*) ax_gcc_arch="athlon-fx opteron k8" ;;
*f??:*:*:*) ax_gcc_arch="k8" ;;
esac ;;
*:746e6543:*:*) # IDT
case $ax_cv_gcc_x86_cpuid_1 in
*54?:*:*:*) ax_gcc_arch=winchip-c6 ;;
*58?:*:*:*) ax_gcc_arch=winchip2 ;;
*6[[78]]?:*:*:*) ax_gcc_arch=c3 ;;
*69?:*:*:*) ax_gcc_arch="c3-2 c3" ;;
esac ;;
esac
if test x"$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 ' -' |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="$ax_gcc_arch powerpc"
;;
esac
fi # not cross-compiling
fi # guess arch
if test "x$ax_gcc_arch" != x -a "x$ax_gcc_arch" != xno; then
for arch in $ax_gcc_arch; do
if test "x[]m4_default([$1],yes)" = xyes; then # if we require portable code
flags="-mtune=$arch"
# -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 $host_cpu in i*86|x86_64*) flags="$flags -mcpu=$arch -m$arch";; esac
else
flags="-march=$arch -mcpu=$arch -m$arch"
fi
for flag in $flags; do
AX_CHECK_COMPILER_FLAGS($flag, [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
])