From 3b2cc56dbcbee6bc211cbb58a08384aa6147f825 Mon Sep 17 00:00:00 2001
From: Carlos O'Donell <carlos@systemhalted.org>
Date: Mon, 14 Sep 2015 09:57:58 -0400
Subject: Prevent check-local-headers.sh hang.

Consensus in [1] was that the right way to fix this was simply to
redirect from /dev/null to terminate the test if no inputs was found
by the tests own globbing e.g. "*/*.{o,os,oS}.d" This can happen when
the build is incomplete and the tests are started. This failure causes
check-local-headers.sh to hang forever waiting for input from stdin.
This change makes the test terminate immediately if the glob doesn't
return any files.

[1] https://sourceware.org/ml/libc-alpha/2014-12/msg00337.html
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index e07309e..a2abfb9 100644
--- a/Makefile
+++ b/Makefile
@@ -262,7 +262,7 @@ endif
 
 $(objpfx)check-local-headers.out: scripts/check-local-headers.sh
 	AWK='$(AWK)' scripts/check-local-headers.sh \
-	  "$(includedir)" "$(objpfx)" > $@; \
+	  "$(includedir)" "$(objpfx)" < /dev/null > $@; \
 	$(evaluate-test)
 
 ifneq ($(PERL),no)
-- 
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