glcpp: Print to the main compiler's infolog, not stdout.
diff --git a/glcpp/pp.c b/glcpp/pp.c
index e6921db..5455518 100644
--- a/glcpp/pp.c
+++ b/glcpp/pp.c
@@ -57,7 +57,7 @@
 }
 
 extern int
-preprocess(void *talloc_ctx, const char **shader)
+preprocess(void *talloc_ctx, const char **shader, char **info_log)
 {
 	int errors;
 	glcpp_parser_t *parser = glcpp_parser_create ();
@@ -65,7 +65,7 @@
 
 	glcpp_parser_parse (parser);
 
-	printf("%s", parser->info_log);
+	*info_log = talloc_strdup_append(*info_log, parser->info_log);
 
 	talloc_steal(talloc_ctx, parser->output);
 	*shader = parser->output;
diff --git a/glsl_parser_extras.h b/glsl_parser_extras.h
index 1edd86b..87de908 100644
--- a/glsl_parser_extras.h
+++ b/glsl_parser_extras.h
@@ -102,7 +102,7 @@
 			       const char *fmt, ...);
 
 extern "C" {
-extern int preprocess(void *ctx, const char **shader);
+extern int preprocess(void *ctx, const char **shader, char **info_log);
 }
 
 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
diff --git a/main.cpp b/main.cpp
index 2590438..7f094f8 100644
--- a/main.cpp
+++ b/main.cpp
@@ -128,7 +128,7 @@
     * should probably be the parser context, but there isn't one yet.
    */
    const char *source = shader->Source;
-   state.error = preprocess(shader, &source);
+   state.error = preprocess(shader, &source, &state.info_log);
 
    if (!state.error) {
       _mesa_glsl_lexer_ctor(& state, source);