From 00d4447395725abaa651e12ed40095081e04011e Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Sun, 13 Sep 2015 13:22:01 -0700
Subject: [PATCH 1/3] Detect backtrace() API availability before using it

C libraries besides glibc do not have backtrace() implemented

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
Upstream-Status: Pending

 configure.ac | 2 ++
 src/log.c    | 5 ++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 69c0eeb..90099f2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,6 +171,8 @@ fi
 AM_CONDITIONAL(PPTP, test "${enable_pptp}" != "no")
 AM_CONDITIONAL(PPTP_BUILTIN, test "${enable_pptp}" = "builtin")
 
+AC_CHECK_HEADERS([execinfo.h])
+
 AC_CHECK_HEADERS(resolv.h, dummy=yes,
 	AC_MSG_ERROR(resolver header files are required))
 AC_CHECK_LIB(resolv, ns_initparse, dummy=yes, [
diff --git a/src/log.c b/src/log.c
index a693bd0..5b40c1f 100644
--- a/src/log.c
+++ b/src/log.c
@@ -30,7 +30,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <syslog.h>
-#include <execinfo.h>
 #include <dlfcn.h>
 
 #include "connman.h"
@@ -215,9 +214,9 @@ static void print_backtrace(unsigned int offset)
 static void signal_handler(int signo)
 {
 	connman_error("Aborting (signal %d) [%s]", signo, program_exec);
-
+#ifdef HAVE_EXECINFO_H
 	print_backtrace(2);
-
+#endif /* HAVE_EXECINFO_H */
 	exit(EXIT_FAILURE);
 }
 
-- 
2.5.1