X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=m4%2Fopenvswitch.m4;h=c59d5d4c1d7447f13b298f2889a837d87a54c4c3;hb=dd1ba5b3f4425c8eba008d1a93b044da63466812;hp=077c29b97a8a97935ba36004089177c22970c0a4;hpb=7c9b00732c633ddd35b9d92fb9fa4c4f8e3ce390;p=openvswitch

diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4
index 077c29b9..c59d5d4c 100644
--- a/m4/openvswitch.m4
+++ b/m4/openvswitch.m4
@@ -1,6 +1,6 @@
 # -*- autoconf -*-
 
-# Copyright (c) 2008, 2009, 2010 Nicira Networks.
+# Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -73,8 +73,7 @@ AC_DEFUN([OVS_CHECK_OPENSSL],
      [ssl=check])
 
    if test "$ssl" != false; then
-       dnl Make sure that pkg-config is installed.
-       m4_pattern_forbid([PKG_CHECK_MODULES])
+       m4_ifndef([PKG_CHECK_MODULES], [m4_fatal([Please install pkg-config.])])
        PKG_CHECK_MODULES([SSL], [openssl], 
          [HAVE_OPENSSL=yes],
          [HAVE_OPENSSL=no
@@ -133,6 +132,11 @@ AC_DEFUN([OVS_CHECK_LOGDIR],
      [LOGDIR='${localstatedir}/log/${PACKAGE}'])
    AC_SUBST([LOGDIR])])
 
+dnl Defines HAVE_BACKTRACE if backtrace() is declared in <execinfo.h>
+dnl and exists in libc.
+AC_DEFUN([OVS_CHECK_BACKTRACE],
+  [AC_CHECK_HEADER([execinfo.h], [AC_CHECK_FUNCS([backtrace])])])
+
 dnl Checks for __malloc_hook, etc., supported by glibc.
 AC_DEFUN([OVS_CHECK_MALLOC_HOOKS],
   [AC_CACHE_CHECK(
@@ -338,3 +342,15 @@ AC_DEFUN([OVS_CHECK_LINKER_SECTIONS],
    fi
    AM_CONDITIONAL(
      [USE_LINKER_SECTIONS], [test $ovs_cv_use_linker_sections = yes])])
+
+dnl Checks for groff.
+AC_DEFUN([OVS_CHECK_GROFF],
+  [AC_CACHE_CHECK(
+    [for groff],
+    [ovs_cv_groff],
+    [if (groff -v) >/dev/null 2>&1; then
+       ovs_cv_groff=yes
+     else
+       ovs_cv_groff=no
+     fi])
+   AM_CONDITIONAL([HAVE_GROFF], [test "$ovs_cv_groff" = yes])])