bird/aclocal.m4

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dnl ** Additional Autoconf tests for BIRD configure script
dnl ** (c) 1999 Martin Mares <mj@ucw.cz>
AC_DEFUN([BIRD_CHECK_THREAD_LOCAL],
[
AC_CACHE_CHECK(
[whether _Thread_local is known],
[bird_cv_thread_local],
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[
_Thread_local static int x = 42;
],
[]
)
],
[bird_cv_thread_local=yes],
[bird_cv_thread_local=no]
)
)
])
AC_DEFUN([BIRD_CHECK_PTHREADS],
[
bird_tmp_cflags="$CFLAGS"
CFLAGS="$CFLAGS -pthread"
AC_CACHE_CHECK(
[whether POSIX threads are available],
[bird_cv_lib_pthreads],
[
AC_LINK_IFELSE(
[
AC_LANG_PROGRAM(
[ #include <pthread.h> ],
[
pthread_t pt;
pthread_create(&pt, NULL, NULL, NULL);
pthread_spinlock_t lock;
pthread_spin_lock(&lock);
]
)
],
[bird_cv_lib_pthreads=yes],
[bird_cv_lib_pthreads=no]
)
]
)
CFLAGS="$bird_tmp_cflags"
])
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AC_DEFUN([BIRD_CHECK_MPLS_KERNEL],
[
AC_CACHE_CHECK(
[for Linux MPLS headers],
[bird_cv_mpls_kernel],
[
AC_COMPILE_IFELSE(
[
AC_LANG_PROGRAM(
[
#include <linux/lwtunnel.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <sys/socket.h>
void t(int arg);
],
[
t(AF_MPLS);
t(RTA_VIA);
t(RTA_NEWDST);
t(RTA_ENCAP_TYPE);
t(RTA_ENCAP);
struct rtvia rtvia;
t(LWTUNNEL_ENCAP_MPLS);
]
)
],
[bird_cv_mpls_kernel=yes],
[bird_cv_mpls_kernel=no]
)
]
)
])
AC_DEFUN([BIRD_CHECK_ANDROID_GLOB],
[
AC_CACHE_CHECK(
[for glob.h],
[bird_cv_lib_glob],
AC_LINK_IFELSE([
AC_LANG_PROGRAM(
[
#include <glob.h>
#include <stdlib.h>
],
[ glob(NULL, 0, NULL, NULL); ]
)
],
[bird_cv_lib_glob=yes],
[
bird_tmp_libs="$LIBS"
LIBS="$LIBS -landroid-glob"
AC_LINK_IFELSE([
AC_LANG_PROGRAM(
[
#include <glob.h>
#include <stdlib.h>
],
[ glob(NULL, 0, NULL, NULL); ]
)
],
[bird_cv_lib_glob=-landroid-glob],
[bird_cv_lib_glob=no]
)
LIBS="$bird_tmp_libs"
]
)
)
])
AC_DEFUN([BIRD_CHECK_ANDROID_LOG],
[
AC_CACHE_CHECK(
[for syslog lib flags],
[bird_cv_lib_log],
AC_LINK_IFELSE([
AC_LANG_PROGRAM(
[ #include <sys/syslog.h> ],
[ syslog(0, ""); ]
)
],
[bird_cv_lib_log=yes],
[
bird_tmp_libs="$LIBS"
LIBS="$LIBS -llog"
AC_LINK_IFELSE([
AC_LANG_PROGRAM(
[ #include <sys/syslog.h> ],
[ syslog(0, ""); ]
)
],
[bird_cv_lib_log=-llog],
[bird_cv_lib_log=no]
)
LIBS="$bird_tmp_libs"
]
)
)
])
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AC_DEFUN([BIRD_CHECK_LTO],
[
bird_tmp_cflags="$CFLAGS"
bird_tmp_ldflags="$LDFLAGS"
CFLAGS="-flto"
LDFLAGS="-flto"
AC_CACHE_CHECK(
[whether link time optimizer is available],
[bird_cv_c_lto],
[
AC_LINK_IFELSE(
[AC_LANG_PROGRAM()],
[bird_cv_c_lto=yes],
[bird_cv_c_lto=no]
)
]
)
CFLAGS="$bird_tmp_cflags"
LDFLAGS="$bird_tmp_ldflags"
])
AC_DEFUN([BIRD_CHECK_GCC_OPTION],
[
bird_tmp_cflags="$CFLAGS"
CFLAGS="$3 $2"
AC_CACHE_CHECK(
[whether CC supports $2],
[$1],
[
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM()],
[$1=yes],
[$1=no]
)
]
)
CFLAGS="$bird_tmp_cflags"
])
AC_DEFUN([BIRD_ADD_GCC_OPTION],
[
if test "$$1" = yes ; then
CFLAGS="$CFLAGS $2"
fi
])
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# BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
# copied from autoconf internal _AC_PATH_PROG_FLAVOR_GNU
AC_DEFUN([BIRD_CHECK_PROG_FLAVOR_GNU],
[
# Check for GNU $1
case `"$1" --version 2>&1` in
*GNU*)
$2
;;
m4_ifval([$3],
[*)
$3
;;
]
)
esac
])
AC_DEFUN([BIRD_CHECK_BISON_VERSION],
[
$1=`bison --version | ( read line; echo ${line##* } )`
case "$$1" in
1.* | 2.0* | 2.1* | 2.2* | 2.3*)
AC_MSG_ERROR([Provided Bison version $$1 is too old, need at least 2.4])
;;
2.*)
bird_bison_synclines=no
bird_bison_enhanced_error=no
;;
3.* | 4.* | 5.* | 6.* | 7.* | 8.* | 9.*)
bird_bison_synclines=yes
bird_bison_enhanced_error=yes
;;
*)
AC_MSG_ERROR([Couldn't parse Bison version $$1. Call the developers for help.])
;;
esac
])