Commit db3dc144 authored by Jan Včelák's avatar Jan Včelák 🚀 Committed by Gerrit Code Review

autoconf: use compiler flag test macro from GNU Autoconf Archive

(This implementation has EXTRA-FLAGS option.)

norefs

Change-Id: I456b89ce8a7b2624b0196013527682fce13078e6
parent 30bfc70c
......@@ -140,7 +140,7 @@ AC_ARG_ENABLE([recvmmsg],
AC_ARG_ENABLE([lto],
AS_HELP_STRING([--enable-lto=yes|no], [enable link-time optimizations, enable if not broken for some extra speed [default=no]]),
[case "${enableval}" in
yes) AX_CHECK_COMPILER_FLAGS("-flto", [CFLAGS="$CFLAGS -flto"], []) ;;
yes) AX_CHECK_COMPILE_FLAG("-flto", [CFLAGS="$CFLAGS -flto"], []) ;;
no) ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-lto]) ;;
esac])
......@@ -150,11 +150,11 @@ AC_ARG_ENABLE([microseconds-log],
AS_HELP_STRING([--enable-microseconds-log], [enable microseconds in log messages [default=no]]),
AC_DEFINE([ENABLE_MICROSECONDS_LOG], [1], [microseconds in log messages]))
AX_CHECK_COMPILER_FLAGS("-fpredictive-commoning", [CFLAGS="$CFLAGS -fpredictive-commoning"], [])
AX_CHECK_COMPILE_FLAG("-fpredictive-commoning", [CFLAGS="$CFLAGS -fpredictive-commoning"], [])
# Disable strict aliasing
# FIXME: we break strict aliasing on many occurenes, disable it until resolved or kept
AX_CHECK_COMPILER_FLAGS("-fno-strict-aliasing", [CFLAGS="$CFLAGS -fno-strict-aliasing"], [])
AX_CHECK_COMPILE_FLAG("-fno-strict-aliasing", [CFLAGS="$CFLAGS -fno-strict-aliasing"], [])
# Checks for libraries.
# FIXME: Replace `main' with a function in `-lm':
......
# ===========================================================================
# http://autoconf-archive.cryp.to/ax_check_compiler_flags.html
# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_COMPILER_FLAGS(FLAGS, [ACTION-SUCCESS], [ACTION-FAILURE])
# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
#
# DESCRIPTION
#
# Check whether the given compiler FLAGS work with the current language's
# compiler, or whether they give an error. (Warnings, however, are
# ignored.)
# Check whether the given FLAG works with the current language's compiler
# or gives an error. (Warnings, however, are ignored)
#
# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
# success/failure.
#
# LAST MODIFICATION
# If EXTRA-FLAGS is defined, it is added to the current language's default
# flags (e.g. CFLAGS) when the check is done. The check is thus made with
# 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.
#
# 2008-04-12
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# COPYLEFT
# LICENSE
#
# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
# Copyright (c) 2008 Matteo Frigo
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
# 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
......@@ -46,33 +49,24 @@
# 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.
# 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
#serial 2
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
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 $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
[m4_default([$2], :)],
[m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS
......@@ -98,22 +98,22 @@ AC_DEFUN([AX_EXT],
if test "$ax_cv_have_mmx_ext" = yes; then
AC_DEFINE(HAVE_MMX,,[Support mmx instructions])
AX_CHECK_COMPILER_FLAGS([-mmmx], [SIMD_FLAGS="$SIMD_FLAGS -mmmx"], [])
AX_CHECK_COMPILE_FLAG([-mmmx], [SIMD_FLAGS="$SIMD_FLAGS -mmmx"], [])
fi
if test "$ax_cv_have_sse_ext" = yes; then
AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions])
AX_CHECK_COMPILER_FLAGS([-msse], [SIMD_FLAGS="$SIMD_FLAGS -msse"], [])
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_COMPILER_FLAGS([-msse2], [SIMD_FLAGS="$SIMD_FLAGS -msse2"], [])
AX_CHECK_COMPILE_FLAG([-msse2], [SIMD_FLAGS="$SIMD_FLAGS -msse2"], [])
fi
if test "$ax_cv_have_sse3_ext" = yes; then
AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions])
AX_CHECK_COMPILER_FLAGS([-msse3], [SIMD_FLAGS="$SIMD_FLAGS -msse3"], [])
AX_CHECK_COMPILE_FLAG([-msse3], [SIMD_FLAGS="$SIMD_FLAGS -msse3"], [])
fi
if test "$ax_cv_have_ssse3_ext" = yes; then
......
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