domd: Do not needlessly overwrite Makefiles

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1370)

1 files changed, 5 insertions, 1 deletions

diff --git a/util/domd b/util/domd
index 95bb1b06e2..3ac4950c42 100755
--- a/util/domd
+++ b/util/domd
@@ -32,7 +32,11 @@ else
     ${PERL} $TOP/util/clean-depend.pl < Makefile > Makefile.new
     RC=$?
 fi
-mv Makefile.new Makefile
+if ! cmp -s Makefile Makefile.new; then
+    mv Makefile.new Makefile
+else
+    rm -f Makefile.new
+fi
 # unfake the presence of Kerberos
 rm $TOP/krb5.h