X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=m4%2Fopenvswitch.m4;h=73db4bbaf50109558b2d1afe312e4b5a56468084;hb=2b01925c18a52b2f7dbff5c70269a4b4d8aec027;hp=e6d03a6bfb5dd473b7ab4068e9b4a0f30e3839a2;hpb=1269f7ae5f4bf23205de2cd45220b2382af78393;p=openvswitch

diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4
index e6d03a6b..73db4bba 100644
--- a/m4/openvswitch.m4
+++ b/m4/openvswitch.m4
@@ -152,6 +152,11 @@ 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(