--- lxdm-0.3.0/configure.ac
+++ lxdm-0.3.0.mod/configure.ac
@@ -23,7 +23,7 @@
 
 # Checks for header files.
 AC_PATH_X
-AC_CHECK_HEADERS([shadow.h stdlib.h string.h unistd.h])
+AC_CHECK_HEADERS([shadow.h stdlib.h string.h unistd.h execinfo.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_TYPE_PID_T
Only in lxdm-0.3.0: data/LoginReady
Only in lxdm-0.3.0: data/PostLogin
Only in lxdm-0.3.0: data/PostLogout
Only in lxdm-0.3.0: data/PreLogin
Only in lxdm-0.3.0: data/PreReboot
Only in lxdm-0.3.0: data/PreShutdown
--- lxdm-0.3.0/src/lxdm.c
+++ lxdm-0.3.0.mod/src/lxdm.c
@@ -51,7 +51,9 @@
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 
+#ifdef HAVE_EXECINFO_H
 #include <execinfo.h>
+#endif
 
 #include <utmp.h>
 
@@ -1480,6 +1482,7 @@
 
 static void log_sigsegv(void)
 {
+#ifdef HAVE_EXECINFO_H
 	void *array[40];
 	size_t size;
 	char **bt_strs;
@@ -1492,6 +1495,9 @@
 	    fprintf(stderr, "%s\n", bt_strs[i]);
 
 	free(bt_strs);
+#else
+	fprintf(stderr, "backtrace is unavailable\n");
+#endif
 }
 
 static void sigsegv_handler(int sig)