Store version info in library and allow it to be displayed

The package version number and build date are stored in the library in:

	const char keyutils_version_string[];
	const char keyutils_build_string[];

And are displayable with the programs built as part of it:

	# keyctl --version
	keyctl from keyutils-1.5.3 (Built 2011-08-24)
	# request-key --version
	request-key from keyutils-1.5.3 (Built 2011-08-24)

The DNS query resolver gets extended version information as it already has its
own version number:

	# key.dns_resolver --version
	version: 1.0 from keyutils-1.5.3 (2011-08-24)

(the keyutils version is simply appended to the original).

Signed-off-by: David Howells <dhowells@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/keyutils.h b/keyutils.h
index 05517d9..15b441d 100644
--- a/keyutils.h
+++ b/keyutils.h
@@ -14,6 +14,9 @@
 
 #include <stdint.h>
 
+extern const char keyutils_version_string[];
+extern const char keyutils_build_string[];
+
 /* key serial number */
 typedef int32_t key_serial_t;