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##### http://autoconf-archive.cryp.to/ax_c_check_flag.html
#
# SYNOPSIS
#
#
AX_C_CHECK_FLAG(FLAG-TO-CHECK,[PROLOGUE],[BODY],[ACTION-IF-SUCCESS],[ACTION-IF-FAILURE])
#
# DESCRIPTION
#
# This macro tests if the C compiler supports the flag FLAG-TO-CHECK.
# If successfull execute ACTION-IF-SUCCESS otherwise
# ACTION-IF-FAILURE. PROLOGUE and BODY are optional and should be
# used as in AC_LANG_PROGRAM macro.
#
# This code is inspired from KDE_CHECK_COMPILER_FLAG macro. Thanks to
# Bogdan Drozdowski <bogdandr@op.pl> for testing and bug fixes.
#
# LAST MODIFICATION
#
# 2007-11-26
#
# COPYLEFT
#
# Copyright (c) 2007 Francesco Salvestrini <salvestrini@users.sourceforge.net>
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
#
# 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([AX_C_CHECK_FLAG],[
AC_PREREQ([2.61])
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_PROG_SED])
flag=`echo "$1" | $SED 'y% .=/+-(){}<>:*,%_______________%'`
AC_CACHE_CHECK([whether the C compiler accepts the $1 flag],
[ax_cv_c_check_flag_$flag],[
AC_LANG_PUSH([C])
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1"
AC_LINK_IFELSE([
AC_LANG_PROGRAM([$2],[$3])
],[
eval "ax_cv_c_check_flag_$flag=yes"
],[
eval "ax_cv_c_check_flag_$flag=no"
])
CFLAGS="$save_CFLAGS"
AC_LANG_POP
])
AS_IF([eval "test \"`echo '$ax_cv_c_check_flag_'$flag`\" = yes"],[
:
$4
],[
:
$5
])
])
#
# SYNOPSIS
#
#
MPC_PROG_CC_WARNINGFLAG([CFLAG-VAR])
#
# DESCRIPTION
#
# For development version only: Checks if gcc accepts warning flags.
# Put accepted ones into CFLAG-VAR.
#
AC_DEFUN([MPC_PROG_CC_WARNINGCFLAGS], [
AC_REQUIRE([AC_PROG_GREP])
if echo $VERSION | grep -c dev >/dev/null 2>&1 ; then
if test x$GCC = xyes ; then
case $host in
*darwin*) ;;
*) AX_C_CHECK_FLAG(-D_FORTIFY_SOURCE=2,,,$1="$$1 -D_FORTIFY_SOURCE=2",) ;;
esac
AX_C_CHECK_FLAG(-ansi,,,$1="$$1 -ansi",)
AX_C_CHECK_FLAG(-pedantic,,,$1="$$1 -pedantic",)
AX_C_CHECK_FLAG(-Wno-long-long,,,$1="$$1 -Wno-long-long",)
AX_C_CHECK_FLAG(-Wall,,,$1="$$1 -Wall",)
AX_C_CHECK_FLAG(-Wextra,,,$1="$$1 -Wextra",)
AX_C_CHECK_FLAG(-Werror,,,$1="$$1 -Werror",)
AC_SUBST($1)
fi
fi
])
#
# SYNOPSIS
#
#
MPC_GMP_CC_CFLAGS
#
# DESCRIPTION
#
# Checks if CC and CFLAGS can be extracted from gmp.h
#
AC_DEFUN([MPC_GMP_CC_CFLAGS], [
AC_MSG_CHECKING(for CC and CFLAGS in gmp.h)
# Get CC
echo "#include \"gmp.h\"" > conftest.c
echo "MPC_OPTION __GMP_CC" >> conftest.c
GMP_CC=`$CPP $CPPFLAGS conftest.c 2> /dev/null | $EGREP MPC_OPTION | $SED -e 's/MPC_OPTION //g' | $SED -e 's/"//g'`
#Get CFLAGS
echo "#include \"gmp.h\"" > conftest.c
echo "MPC_OPTION __GMP_CFLAGS" >> conftest.c
GMP_CFLAGS=`$CPP $CPPFLAGS conftest.c 2> /dev/null | $EGREP MPC_OPTION | $SED -e 's/MPC_OPTION //g'| $SED -e 's/"//g'`
rm -f conftest.c
if test "x$GMP_CFLAGS" = "x__GMP_CFLAGS" -o "x$GMP_CC" = "x__GMP_CC" ; then
AC_MSG_RESULT(no)
GMP_CFLAGS=
GMP_CC=
else
AC_MSG_RESULT(yes [CC=$GMP_CC CFLAGS=$GMP_CFLAGS])
fi
dnl Check for validity of CC and CFLAGS obtained from gmp.h
if test -n "$GMP_CFLAGS" ; then
old_cflags=$CFLAGS
old_cc=$CC
CFLAGS=$GMP_CFLAGS
CC=$GMP_CC
AC_MSG_CHECKING(for CC=$GMP_CC and CFLAGS=$GMP_CFLAGS)
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[/*hello*/]],[[/*world*/]]), [
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
CFLAGS=$old_cflags
CC=$old_cc
])
dnl CC may have changed. Recheck for GCC.
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifndef __GNUC__
#error "GCC Not Found"
error
#endif
]])], [
GCC=yes
], [
GCC=no
])
fi
])
#
# SYNOPSIS
#
#
MPC_WINDOWS
#
# DESCRIPTION
#
# Additional checks on windows
# libtool requires "-no-undefined" for win32 dll
# It also disables the tests involving the linking with LIBGMP if DLL
#
AC_DEFUN([MPC_WINDOWS], [
AC_MSG_CHECKING(for DLL/static GMP)
if test "$enable_shared" = yes; then
LDFLAGS="$LDFLAGS -no-undefined"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "gmp.h"
#if !__GMP_LIBGMP_DLL
#error
error
#endif
]], [[]])],[AC_MSG_RESULT(DLL)],[
AC_MSG_RESULT(static)
AC_MSG_ERROR([gmp.h isn't a DLL: use --enable-static --disable-shared]) ])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "mpfr.h"
#if !__GMP_LIBGMP_DLL
#error
error
#endif
]], [[]])],[AC_MSG_RESULT(DLL)],[
AC_MSG_RESULT(static)
AC_MSG_ERROR([gmp.h isn't a DLL: use --enable-static --disable-shared]) ])
else
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include "gmp.h"
#if __GMP_LIBGMP_DLL
#error
error
#endif
]], [[]])],[AC_MSG_RESULT(static)],[
AC_MSG_RESULT(DLL)
AC_MSG_ERROR([gmp.h is a DLL: use --disable-static --enable-shared]) ])
fi
;;
])
|
