From a7e3c6fa8ceb6a3a423377aa32ab0da5a6ab9286 Mon Sep 17 00:00:00 2001
From: Adam Jackson <ajax@nwnk.net>
Date: Mon, 3 Oct 2005 06:31:48 +0000
Subject: [PATCH] Real configure check for execinfo.h (Yuri Vasilevski)

---
 configure.ac | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/configure.ac b/configure.ac
index 7def13c19..bbb1b7325 100644
--- a/configure.ac
+++ b/configure.ac
@@ -153,6 +153,13 @@ if test "x$ac_cv_sysv_ipc" = xyes; then
 	AC_DEFINE(HAVE_SYSV_IPC, 1, [Define to 1 if SYSV IPC is available])
 fi
 
+dnl glibc backtrace support check (hw/xfree86/common/xf86Events.c)
+AC_CHECK_HEADER([execinfo.h],[
+    AC_CHECK_LIB(c, backtrace, [
+        AC_DEFINE(HAVE_BACKTRACE, 1, [Has backtrace support])
+    ])
+)
+
 dnl ---------------------------------------------------------------------------
 dnl Bus options and CPU capabilities.  Replaces logic in
 dnl hw/xfree86/os-support/bus/Makefile.am, among others.