[PATCH v4 06/15] tools/gputop: find program name from command line

[Jeevaka Prabu Badrappan]

program_invocation_short_name is global variable provided by glibc.

Inorder to get the igt built for Android(without glibc), find the
program from command line without using program_invocation_short_name.

Signed-off-by: Jeevaka Prabu Badrappan <jeevaka.badrappan at intel.com>
---
 tools/gputop.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/tools/gputop.c b/tools/gputop.c
index 43b01f566..457a31969 100644
--- a/tools/gputop.c
+++ b/tools/gputop.c
@@ -335,15 +335,22 @@ struct gputop_args {
 	unsigned long delay_usec;
 };
 
-static void help(void)
+static void help(char* full_path)
 {
+	const char *short_program_name = strrchr(full_path, '/');
+	if (short_program_name) {
+		short_program_name++;
+	} else {
+		short_program_name = full_path;
+	}
+
 	printf("Usage:\n"
 	       "\t%s [options]\n\n"
 	       "Options:\n"
 	       "\t-h, --help                show this help\n"
 	       "\t-d, --delay =SEC[.TENTHS] iterative delay as SECS [.TENTHS]\n"
 	       "\t-n, --iterations =NUMBER  number of executions\n"
-	       , program_invocation_short_name);
+	       , short_program_name);
 }
 
 static int parse_args(int argc, char * const argv[], struct gputop_args *args)
@@ -384,7 +391,7 @@ static int parse_args(int argc, char * const argv[], struct gputop_args *args)
 			}
 			break;
 		case 'h':
-			help();
+			help(argv[0]);
 			return 0;
 		default:
 			fprintf(stderr, "Unkonwn option '%c'.\n", c);
-- 
2.34.1