Add -version option to print program version

Add both -version & -display to man page, since options were not
previously documented.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/xdriinfo.c b/xdriinfo.c
index 9118ea9..c23cfa1 100644
--- a/xdriinfo.c
+++ b/xdriinfo.c
@@ -22,6 +22,10 @@
  * 
  */
 
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
 #define GLX_GLXEXT_PROTOTYPES
 #include <GL/glx.h>
 #include <GL/glxext.h>
@@ -44,7 +48,7 @@ void printUsage (void);
 
 void printUsage (void) {
     fprintf (stderr,
-"Usage: xdriinfo [-display <dpy>] [command]\n"
+"Usage: xdriinfo [-display <dpy>] [-version] [command]\n"
 "Commands:\n"
 "  nscreens               print the number of screens on display\n"
 "  driver screen          print the DRI driver name of screen\n"
@@ -79,6 +83,9 @@ int main (int argc, char *argv[]) {
 	} else if (!strcmp (argv[i], "options")) {
 	    func = OPTIONS;
 	    argPtr = &funcArg;
+	} else if (!strcmp (argv[i], "-version")) {
+	    puts(PACKAGE_STRING);
+	    return 0;
 	} else {
 	    fprintf (stderr, "%s: unrecognized argument '%s'\n",
 		     argv[0], argv[i]);