From 0ab2815743d89b1cd283abaf4d2cb77fed4a2df4 Mon Sep 17 00:00:00 2001
From: Peter Breitenlohner <peb@mppmu.mpg.de>
Date: Sun, 9 Nov 2008 14:24:10 +0100
Subject: avoid race condition for parallel jobs

---
 Makefile.am | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 1a32798..7c13340 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -167,20 +167,25 @@ APPDEFAULTFILES = \
         app-defaults/Xedit-color \
 	app-defaults/Xedit
 
+$(APPDEFAULTFILES): appsubdir
+
+.PHONY: appsubdir
+
+# Ensure ./app-defaults exists, avoiding race condition for parallel jobs
+appsubdir:
+	test -d app-defaults || mkdir app-defaults
+
 if USE_XPRINT
 app-defaults/Xedit.ad: 
-	test -d app-defaults || mkdir app-defaults
 	cp $(top_srcdir)/app-defaults/Xedit-xprint.ad app-defaults/Xedit.ad
 else
 app-defaults/Xedit.ad:
-	test -d app-defaults || mkdir app-defaults
 	cp $(top_srcdir)/app-defaults/Xedit-noxprint.ad app-defaults/Xedit.ad
 endif
 
 SUFFIXES = .ad 
 
 .ad:
-	test -d app-defaults || mkdir app-defaults
 	cp $< $@
 
 appdefaultdir = @appdefaultdir@
-- 
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