glcpp: Allow standalone glcpp to accept a filename as first argument.
This is useful for debugging the preprocessor.
diff --git a/src/glsl/glcpp/glcpp.c b/src/glsl/glcpp/glcpp.c
index a245cb540..e49a1df 100644
--- a/src/glsl/glcpp/glcpp.c
+++ b/src/glsl/glcpp/glcpp.c
@@ -69,12 +69,20 @@
}
int
-main (void)
+main (int argc, char *argv[])
{
+ char *filename = NULL;
void *ctx = talloc(NULL, void*);
- const char *shader = load_text_file(ctx, NULL);
char *info_log = talloc_strdup(ctx, "");
- int ret = preprocess(ctx, &shader, &info_log, NULL);
+ const char *shader;
+ int ret;
+
+ if (argc) {
+ filename = argv[1];
+ }
+
+ shader = load_text_file(ctx, filename);
+ ret = preprocess(ctx, &shader, &info_log, NULL);
printf("%s", shader);
fprintf(stderr, "%s", info_log);