From: Andy Dougherty <doughera@lafayette.edu>
Date: Tue, 5 Jan 2010 16:28:39 +0000 (-0500)
Subject: Avoid a possible race condition where a parallel make might
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=2b63e250843b907e476587f037c0784d701fca62;p=p5sagit%2Fp5-mst-13.2.git

Avoid a possible race condition where a parallel make might
attempt to update git_version.h and lib/Config_git.pl in
concurrent processes.
---

diff --git a/Makefile.SH b/Makefile.SH
index 1a22205..97df05a 100644
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -559,7 +559,11 @@ all: $(FIRSTMAKEFILE) $(MINIPERL_EXE) miniperl $(generated_pods) $(private) $(un
 
 .PHONY: all translators utilities
 
-lib/Config_git.pl git_version.h: $(MINIPERL_EXE) make_patchnum.pl
+# Both git_version.h and lib/Config_git.pl are built
+# by make_patchnum.pl.
+git_version.h: lib/Config_git.pl
+
+lib/Config_git.pl: $(MINIPERL_EXE) make_patchnum.pl
 	$(MINIPERL) make_patchnum.pl
 
 # make sure that we recompile perl.c if the git version changes