From 112a9c45573b9f28e7e9818cda24c28fff9e3f13 Mon Sep 17 00:00:00 2001
From: Albert Graef <aggraef@gmail.com>
Date: Thu, 8 Mar 2018 16:59:25 +0100
Subject: [PATCH] Fix up git_version target in Windows Makefile.

---
 packages/win32_inno/Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/win32_inno/Makefile b/packages/win32_inno/Makefile
index 3d93c5681..611033e31 100755
--- a/packages/win32_inno/Makefile
+++ b/packages/win32_inno/Makefile
@@ -43,8 +43,9 @@ endif
 	@echo "win32_inno install succeeded!"
 
 git_version: $(pd_src)/src/s_stuff.h.in
-	cd $(pd_src)/src/ && \
-	sed 's|^\(#define PD_BUILD_VERSION "\).*"|\1$(PD_BUILD_VERSION)"|' s_stuff.h.in > s_stuff.h
+	@cd $(pd_src)/src/ && \
+	sed 's|^\(#define PD_BUILD_VERSION "\).*"|\1$(PD_BUILD_VERSION)"|' s_stuff.h.in > s_stuff.h.new && \
+	(test -f s_stuff.h && diff -q s_stuff.h s_stuff.h.new > /dev/null && rm -f s_stuff.h.new && echo s_stuff.h unchanged || (rm -f s_stuff.h && mv s_stuff.h.new s_stuff.h))
 
 build_pd: git_version
 	cd $(pd_src)/src && $(MAKE) -f makefile.mingw
-- 
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