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# aclocal.m4 generated automatically by aclocal 1.6.3 -*- Autoconf -*-
# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
# Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
AC_DEFUN([AC_CHECK_WORKING_GETIFADDRS],
[
AC_MSG_CHECKING([whether getifaddrs returns correct values])
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#if STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# if HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#if HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#include <sys/types.h>
#include <net/if.h>
#include <ifaddrs.h>
int main() {
struct ifaddrs *net;
if (getifaddrs(&net) != 0) return 1;
if (net!=NULL)
if (net->ifa_data==NULL) {
freeifaddrs(net);
return 1;
}
freeifaddrs(net);
return 0;
}
]])],[
AC_MSG_RESULT(yes)
AC_DEFINE_UNQUOTED([HAVE_WORKING_GETIFADDRS],[1],[getifaddrs works as espected])
INPUT_FOUND=1
INPUT_SYSTEM="$INPUT_SYSTEM getifaddrs.$OBJEXT"
],[
AC_MSG_RESULT(no)
],[
AC_MSG_RESULT(cross-compiling, assume yes)
AC_DEFINE_UNQUOTED([HAVE_WORKING_GETIFADDRS],[1],[getifaddrs works as espected])
INPUT_FOUND=1
INPUT_SYSTEM="$INPUT_SYSTEM getifaddrs.$OBJEXT"
])
])
# AC_CHECK_CC_OPT
# ---------------------
# Check whether the C compiler accepts the given option
AC_DEFUN([AC_CHECK_CC_OPT],
[AC_MSG_CHECKING([whether ${CC-cc} accepts -[$1]])
echo 'void f(){}' > conftest.c
if test -z "`${CC-cc} -c -$1 conftest.c 2>&1`"; then
AC_MSG_RESULT(yes)
CFLAGS="$CFLAGS -$1"
else
AC_MSG_RESULT(no)
fi
rm -f conftest*
])
# Usage:
# AC_ASK_OPTLIB(library, function, header, description, packagename, libdefine, headerdefine)
# Only the last argument is optional, because they will only be defined if both the lib
# and header are found
# Example:
# AC_ASK_OPTLIB(z, compress2, zlib.h, [ Support zlib], zlib, HAVE_LIBZ, HAVE_ZLIB_H)
AC_DEFUN([AC_ASK_OPTLIB], [
AC_ARG_WITH($5, [ --with-$5 $4], [
# Specified
LIBSPEC=$withval
], [
# Not specified
LIBSPECFLAGS=`pkg-config --libs $5 2>/dev/null`
LIBSPECCFLAGS=`pkg-config --cflags $5 2>/dev/null`
AC_CHECK_LIB($1, $2, [
OLDCPPFLAGS="$CPPFLAGS"
OLDCFLAGS="$CFLAGS"
CPPFLAGS="$CPPFLAGS $LIBSPECCFLAGS"
CFLAGS="$CFLAGS $LIBSPECCFLAGS"
AC_CHECK_HEADER($3, [
LIBSPEC=yes
], [
LIBSPEC=no
])
CPPFLAGS="$OLDCPPFLAGS"
CFLAGS="$OLDCFLAGS"
], [
LIBSPEC=no
dnl AC_MSG_WARN(Didn't find $5)
], $LIBSPECFLAGS)
])
case $LIBSPEC in
no)
dnl AC_MSG_WARN(Support for $5 disabled)
;;
*)
if test "${LIBSPEC}" = "yes"; then
true
else
LIBSPECFLAGS="-L${LIBSPEC}/lib ${LIBSPECFLAGS}"
LIBSPECCFLAGS="-I${LIBSPEC}/include ${LIBSPECCFLAGS}"
fi
AC_CHECK_LIB($1, $2, [
OLDCFLAGS="$CFLAGS"
OLDCPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS ${LIBSPECCFLAGS}"
CFLAGS="$CFLAGS ${LIBSPECCFLAGS}"
AC_CHECK_HEADER($3, [
if test -n "$7"; then
AC_DEFINE($7, [1], [Define to 1 if you have the <$3> header file.])
fi
if test -n "$6"; then
AC_DEFINE($6, [1], [Define to 1 if you have $2 from $5])
fi
LDFLAGS="$LDFLAGS $LIBSPECFLAGS"
LIBS="$LIBS -l$1"
], [
CFLAGS="$OLDCFLAGS"
CPPFLAGS="$OLDCPPFLAGS"
AC_MSG_ERROR(Could not find $3)
])
], [
AC_MSG_ERROR(Could not find $5)
], $LIBSPECFLAGS)
;;
esac
])
AC_DEFUN([AC_QEF_C_NORETURN],
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts noreturn attribute)
AC_CACHE_VAL(qef_cv_c_noreturn,
[qef_cv_c_noreturn=no
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
void f (void) __attribute__ ((noreturn));
void f (void)
{
exit (1);
}
]], [[
f ();
]])],[qef_cv_c_noreturn="yes"; FUNCATTR_NORETURN_VAL="__attribute__ ((noreturn))"],[qef_cv_c_noreturn="no"; FUNCATTR_NORETURN_VAL="/* will not return */"])
])
AC_MSG_RESULT($qef_cv_c_noreturn)
AC_DEFINE_UNQUOTED([FUNCATTR_NORETURN], [$FUNCATTR_NORETURN_VAL],[cc knows about noreturn])
])dnl
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