gentoo-overlay/dev-libs/gobject-introspection/files/gobject-introspection-1.42.0-cpp-flags.patch

From d2dce55c971fc44cc327818b0341eb89f1243db6 Mon Sep 17 00:00:00 2001
From: Michael Catanzaro <mcatanzaro@gnome.org>
Date: Wed, 28 Jan 2015 21:55:20 -0600
Subject: scanner: don't pass certain debug level flags to cpp

These may cause cpp to output code that still has #defines in them,
which the scanner does not expect.

https://bugzilla.gnome.org/show_bug.cgi?id=720504

diff --git a/giscanner/sourcescanner.py b/giscanner/sourcescanner.py
index dab1602..9a81421 100644
--- a/giscanner/sourcescanner.py
+++ b/giscanner/sourcescanner.py
@@ -294,6 +294,14 @@ class SourceScanner(object):
         cpp_args += ['-E', '-C', '-I.', '-']
         cpp_args += self._cpp_options
 
+        # We expect the preprocessor to remove macros. If debugging is turned
+        # up high enough that won't happen, so strip these out. Bug #720504
+        for flag in ['-g3', '-ggdb3', '-gstabs3', '-gcoff3', '-gxcoff3', '-gvms3']:
+            try:
+                cpp_args.remove(flag)
+            except ValueError:
+                pass
+
         proc = subprocess.Popen(cpp_args,
                                 stdin=subprocess.PIPE,
                                 stdout=subprocess.PIPE)
-- 
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