Paul Jakma:
lib/debug.{c,h}: glibc backtrace printing function (from the glibc info page)
configure.ac: check for glibc backtrace and set define
lib/zebra.h: glibc backtrace support
diff --git a/configure.ac b/configure.ac
index 4c30bce..be371fc 100755
--- a/configure.ac
+++ b/configure.ac
@@ -856,6 +856,18 @@
AC_DEFINE(HAVE_RUSAGE,,rusage)],
AC_MSG_RESULT(no))
+dnl ---------------------------
+dnl check for glibc 'backtrace'
+dnl ---------------------------
+if test "${glibc}" = "yes"; then
+ AC_CHECK_HEADER(execinfo.h)
+fi
+if test x"${ac_cv_header_execinfo_h}" = x"yes"; then
+ AC_CHECK_FUNC(backtrace,
+ [AC_DEFINE(HAVE_GLIBC_BACKTRACE,,Glibc backtrace)]
+ )
+fi
+
dnl -------------
dnl check version
dnl -------------
diff --git a/configure.in b/configure.in
index 4c30bce..be371fc 100755
--- a/configure.in
+++ b/configure.in
@@ -856,6 +856,18 @@
AC_DEFINE(HAVE_RUSAGE,,rusage)],
AC_MSG_RESULT(no))
+dnl ---------------------------
+dnl check for glibc 'backtrace'
+dnl ---------------------------
+if test "${glibc}" = "yes"; then
+ AC_CHECK_HEADER(execinfo.h)
+fi
+if test x"${ac_cv_header_execinfo_h}" = x"yes"; then
+ AC_CHECK_FUNC(backtrace,
+ [AC_DEFINE(HAVE_GLIBC_BACKTRACE,,Glibc backtrace)]
+ )
+fi
+
dnl -------------
dnl check version
dnl -------------
diff --git a/lib/debug.c b/lib/debug.c
new file mode 100644
index 0000000..c4b67a5
--- /dev/null
+++ b/lib/debug.c
@@ -0,0 +1,23 @@
+#include <zebra.h>
+#include "log.h"
+
+void
+debug_print_trace (int signal)
+{
+ void *array[10];
+ size_t size;
+ char **strings;
+ size_t i;
+
+ size = backtrace (array, 10);
+ strings = backtrace_symbols (array, size);
+
+ printf ("Obtained %zd stack frames.\n", size);
+
+ for (i = 0; i < size; i++)
+ printf ("%s\n", strings[i]);
+
+ free (strings);
+
+ exit(1);
+}
diff --git a/lib/debug.h b/lib/debug.h
new file mode 100644
index 0000000..4440904
--- /dev/null
+++ b/lib/debug.h
@@ -0,0 +1,3 @@
+
+void debug_print_trace (int);
+
diff --git a/lib/zebra.h b/lib/zebra.h
index 7b1e801..62566cf 100644
--- a/lib/zebra.h
+++ b/lib/zebra.h
@@ -172,6 +172,10 @@
#include <libutil.h>
#endif /* HAVE_LIBUTIL_H */
+#ifdef HAVE_GLIBC_BACKTRACE
+#include <execinfo.h>
+#endif /* HAVE_GLIBC_BACKTRACE */
+
#ifdef BSDI_NRL
#ifdef HAVE_NETINET6_IN6_H