From 37cf3dd630109a264389e8d7d0952e70be28dbc9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Tue, 3 Dec 2013 20:35:54 +0100
Subject: [PATCH] configure: Avoid overwriting existing dependency files.
---
ChangeLog | 3 +++
configure.ac | 5 ++++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index 21042fc8..41633c25 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
2013-12-03 Niels Möller <nisse@lysator.liu.se>
+ * configure.ac (dummy-dep-files): Don't overwrite any existing
+ dependency files.
+
* x86_64/md5-compress.asm: New file, similar to the x86 version.
35% speedup.
diff --git a/configure.ac b/configure.ac
index 7ce4d5af..a4deaae5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -135,7 +135,10 @@ if test x$enable_dependency_tracking = xyes ; then
AC_CONFIG_COMMANDS([dummy-dep-files],
[(cd "$srcdir" && find . '(' -name '*.c' -o -name '*.cxx' ')' -print) \
- | sed 's/\.c\(xx\)\{0,1\}$//' | (while read f; do echo > "$f.o.d"; echo > "$f.po.d"; done)
+ | sed 's/\.c\(xx\)\{0,1\}$//' | (while read f; do \
+ test -f "$f.o.d" || echo > "$f.o.d"; \
+ test -f "$f.po.d" || echo > "$f.po.d"; \
+ done)
])
fi
--
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