backtrace: Make backtrace_capture() work on more systems.

[openvswitch] / m4 / openvswitch.m4

diff --git a/m4/openvswitch.m4 b/m4/openvswitch.m4
index e6d03a6bfb5dd473b7ab4068e9b4a0f30e3839a2..73db4bbaf50109558b2d1afe312e4b5a56468084 100644 (file)
--- 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(