From 48a2b201eafa2cfce3daf1639902113adbf3135f Mon Sep 17 00:00:00 2001
From: Tim-Philipp Müller <tim@centricular.com>
Date: Sat, 12 Mar 2016 09:34:35 +0000
Subject: config file: write commented undef lines same as autoconf

For easier diffing to see if anything is missing when porting.
---
 mesonbuild/mesonlib.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mesonbuild/mesonlib.py b/mesonbuild/mesonlib.py
index a20ddf03e..ac605bf36 100644
--- a/mesonbuild/mesonlib.py
+++ b/mesonbuild/mesonlib.py
@@ -227,7 +227,7 @@ def do_mesondefine(line, confdata):
     try:
         v = confdata.get(varname)
     except KeyError:
-        return '/* undef %s */\n' % varname
+        return '/* #undef %s */\n' % varname
     if isinstance(v, bool):
         if v:
             return '#define %s\n' % varname
-- 
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