Nexthop: Fixed recursive route mpls label merging

[thirdparty/bird.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index ee5452526238cf93d926e7b61e89a30e085a6191..02c0f76b7977685996fe203c1fba0ddbed574a3c 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -133,36 +133,35 @@ if test "$bird_cv_struct_ip_mreqn" = yes ; then
 fi
 ])
 
-AC_DEFUN(BIRD_CHECK_LINUX_VERSION,
-[AC_CACHE_CHECK([Linux kernel version], bird_cv_sys_linux_version, [
-AC_REQUIRE_CPP()dnl
-cat > conftest.$ac_ext <<EOF
-[#]line __oline__ "configure"
-#include "confdefs.h"
-#include <linux/version.h>
-VERSION: UTS_RELEASE
-EOF
-bird_cv_sys_linux_version=`eval "$ac_cpp conftest.$ac_ext" 2>&AC_FD_CC | sed '/^VERSION/!d;s/^VERSION: "//;s/".*//'`
-rm -rf conftest*
-if test -z "$bird_cv_sys_linux_version" ; then
-       AC_MSG_RESULT([unknown])
-       AC_MSG_ERROR([Cannot determine kernel version])
-fi
-])])
+AC_DEFUN(BIRD_CHECK_PTHREADS,
+[
+  bird_tmp_cflags="$CFLAGS"
 
-AC_DEFUN(BIRD_CHECK_GCC_OPTIONS,
-[AC_CACHE_VAL(bird_cv_c_option_no_pointer_sign, [
-cat >conftest.c <<EOF
-int main(void)
-{ return 0; }
-EOF
-if $CC -Wall -Wno-pointer-sign conftest.c >&AS_MESSAGE_LOG_FD 2>&1 ; then
-       bird_cv_c_option_no_pointer_sign=yes
-else
-       bird_cv_c_option_no_pointer_sign=no
-fi
-rm -rf conftest* a.out
-])])
+  CFLAGS="$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="$bird_tmp_cflags"
+])
+
+AC_DEFUN(BIRD_CHECK_GCC_OPTION,
+[
+  bird_tmp_cflags="$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
+])
 
 # BIRD_CHECK_PROG_FLAVOR_GNU(PROGRAM-PATH, IF-SUCCESS, [IF-FAILURE])
 # copied autoconf internal _AC_PATH_PROG_FLAVOR_GNU