[gobject-introspection] g-ir-compiler: message when arguments are wrong

[Colin Walters <walters src gnome org>]

commit 6ac310a3379baa34f4614f03fbd573e2ec4549f4
Author: Ben Boeckel <mathstuf gmail com>
Date:   Mon Aug 3 22:22:43 2015 -0400

    g-ir-compiler: message when arguments are wrong
    
    Otherwise the error is "no input files" which is very confusing.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=753160
    
    Signed-off-by: Ben Boeckel <mathstuf gmail com>

 tools/compiler.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/tools/compiler.c b/tools/compiler.c
index 23d76db..88b59a0 100644
--- a/tools/compiler.c
+++ b/tools/compiler.c
@@ -153,6 +153,15 @@ main (int argc, char ** argv)
   g_option_context_parse (context, &argc, &argv, &error);
   g_option_context_free (context);
 
+  if (error)
+    {
+      g_fprintf (stderr, "error parsing arguments: %s\n", error->message);
+
+      g_error_free (error);
+
+      return 1;
+    }
+
   logged_levels = G_LOG_LEVEL_MASK & ~(G_LOG_LEVEL_MESSAGE|G_LOG_LEVEL_DEBUG);
   if (debug)
     logged_levels = logged_levels | G_LOG_LEVEL_DEBUG;