Add C backtrace API.

Useful for at least debugging.

Supported in Linux and OS X (possibly to some extent in *BSD).

See perlhacktips for details.

1 files changed, 24 insertions, 0 deletions

diff --git a/config_h.SH b/config_h.SH
index 5b38733d33..5e8432baa9 100755
--- a/config_h.SH
+++ b/config_h.SH
@@ -131,6 +131,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_difftime HAS_DIFFTIME		/**/
 
+/* HAS_DLADDR:
+ *	This symbol, if defined, indicates that the dladdr routine is
+ *	available to return information about stack addresses.
+ */
+#$d_dladdr HAS_DLADDR	/**/
+
 /* HAS_DLERROR:
  *	This symbol, if defined, indicates that the dlerror routine is
  *	available to return a string describing the last error that
@@ -138,6 +144,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_dlerror HAS_DLERROR	/**/
 
+/* HAS_BACKTRACE:
+ *	This symbol, if defined, indicates that the backtrace routine is
+ *	available to return backtrace information about the C stack.
+ */
+#$d_backtrace HAS_BACKTRACE	/**/
+
 /* HAS_DUP2:
  *	This symbol, if defined, indicates that the dup2 routine is
  *	available to duplicate file descriptors.
@@ -689,6 +701,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_dlfcn I_DLFCN		/**/
 
+/* I_EXECINFO:
+ *	This symbol, if defined, indicates that <execinfo.h> exists and should
+ *	be included.
+ */
+#$i_execinfo I_EXECINFO		/**/
+
 /* I_FCNTL:
  *	This manifest constant tells the C program to include <fcntl.h>.
  */
@@ -4212,6 +4230,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_assert	I_ASSERT		/**/
 
+/* I_BFD:
+ *	This symbol, if defined, indicates that <bfd.h> exists and
+ *	could be included by the C program to use the BFD library.
+ */
+#$i_bfd	I_BFD		/**/
+
 /* I_CRYPT:
  *	This symbol, if defined, indicates that <crypt.h> exists and
  *	should be included.