Doc: Update prefix set comment

[thirdparty/bird.git] / aclocal.m4

diff --git a/aclocal.m4 b/aclocal.m4
index 365bfa81363d7ca8ae4d31f9db14bd3aca8b07ab..1613d6803007d4cb9474672b2181be40294e3339 100644 (file)
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,6 +1,25 @@
 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="$CFLAGS"
@@ -31,6 +50,130 @@ AC_DEFUN([BIRD_CHECK_PTHREADS],
   CFLAGS="$bird_tmp_cflags"
 ])
 
+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"
+      ]
+    )
+  )
+])
+
+AC_DEFUN([BIRD_CHECK_LTO],
+[
+  bird_tmp_cflags="$CFLAGS"
+  bird_tmp_ldflags="$LDFLAGS"
+  CFLAGS="-flto"
+  LDFLAGS="-flto=4"
+
+  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"
@@ -75,3 +218,24 @@ AC_DEFUN([BIRD_CHECK_PROG_FLAVOR_GNU],
   )
   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
+])