From: Richard Levitte <levitte@openssl.org>
Date: Wed, 24 Feb 2021 23:06:46 +0000 (+0100)
Subject: Makefile: Only update doc/build.info when there's an actual change
X-Git-Tag: openssl-3.0.0-alpha13~177
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5a6a6d59a642e0ee437e3753c152b67e92d3cb3f;p=thirdparty%2Fopenssl.git

Makefile: Only update doc/build.info when there's an actual change

Fixes #14307

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14309)
---

diff --git a/Configurations/unix-Makefile.tmpl b/Configurations/unix-Makefile.tmpl
index b0aff03ad1..aa4b3ec0ec 100644
--- a/Configurations/unix-Makefile.tmpl
+++ b/Configurations/unix-Makefile.tmpl
@@ -1096,7 +1096,16 @@ generate_fuzz_oids:
 generate_doc_buildinfo:
 	( $(PERL) -I$(BLDDIR) -Mconfigdata \
                 $(SRCDIR)/util/dofile.pl -o Makefile \
-                        $(SRCDIR)/doc/build.info.in > $(SRCDIR)/doc/build.info )
+                        $(SRCDIR)/doc/build.info.in \
+                        > $(SRCDIR)/doc/build.info.new; \
+          if ( test -e $(SRCDIR)/doc/build.info \
+               && cmp $(SRCDIR)/doc/build.info.new $(SRCDIR)/doc/build.info \
+                  > /dev/null ); \
+          then \
+                rm $(SRCDIR)/doc/build.info.new; \
+          else \
+                mv $(SRCDIR)/doc/build.info.new $(SRCDIR)/doc/build.info; \
+          fi )
 
 # Set to -force to force a rebuild
 ERROR_REBUILD=