path: root/include
diff options
authorRich Felker <>2013-04-06 17:50:37 -0400
committerRich Felker <>2013-04-06 17:50:37 -0400
commitb4ea63856a6af3d1bcc2db12537785371ac2024c (patch)
tree689c9acbdd5e5339261988fb4f6ba007eb345d6b /include
parent5c5ac810c31a77dd17b95bb93e13487a3c1c1433 (diff)
add support for program_invocation[_short]_name
this is a bit ugly, and the motivation for supporting it is questionable. however the main factors were: 1. it will be useful to have this for certain internal purposes anyway -- things like syslog. 2. applications can just save argv[0] in main, but it's hard to fix non-portable library code that's depending on being able to get the invocation name without the main application's help.
Diffstat (limited to 'include')
1 files changed, 6 insertions, 0 deletions
diff --git a/include/errno.h b/include/errno.h
index 9e1e3202..0361b33a 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -5,6 +5,8 @@
extern "C" {
+#include <features.h>
#include <bits/errno.h>
#ifdef __GNUC__
@@ -13,6 +15,10 @@ __attribute__((const))
int *__errno_location(void);
#define errno (*__errno_location())
+#ifdef _GNU_SOURCE
+extern char *program_invocation_short_name, *program_invocation_name;
#ifdef __cplusplus