From f56da8c9670d9a212187c3e78e42da6c7581de0e Mon Sep 17 00:00:00 2001
From: Luboš Luňák <l.lunak@suse.cz>
Date: Fri, 12 Oct 2012 11:50:42 +0200
Subject: rebuild clang plugin when clang changes

Change-Id: Ia4192224d0b217ba2393dc457250cf12febe9306
---
 compilerplugins/Makefile-clang.mk | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'compilerplugins')

diff --git a/compilerplugins/Makefile-clang.mk b/compilerplugins/Makefile-clang.mk
index d175f23899f9..6a1dce04b3d8 100644
--- a/compilerplugins/Makefile-clang.mk
+++ b/compilerplugins/Makefile-clang.mk
@@ -50,7 +50,7 @@ $(CLANGOUTDIR):
 CLANGOBJS=
 
 define clangbuildsrc
-$(3): $(2) $(SRCDIR)/compilerplugins/Makefile-clang.mk
+$(3): $(2) $(SRCDIR)/compilerplugins/Makefile-clang.mk $(CLANGOUTDIR)/clang-timestamp
 	$(CXX) $(CLANGCXXFLAGS) $(CLANGDEFS) $(CLANGINCLUDES) $(2) -fPIC -c -o $(3) -MMD -MT $(3) -MP -MF $(CLANGOUTDIR)/$(1).d
 
 -include $(CLANGOUTDIR)/$(1).d
@@ -64,4 +64,8 @@ $(foreach src, $(CLANGSRC), $(eval $(call clangbuildsrc,$(src),$(CLANGINDIR)/$(s
 $(CLANGOUTDIR)/compileplugin.so: $(CLANGOBJS)
 	$(CXX) -shared $(CLANGOBJS) -o $@
 
+# Clang most probably doesn't maintain binary compatibility, so rebuild when clang changes.
+$(CLANGOUTDIR)/clang-timestamp: $(CLANGBUILD)/bin/clang
+	touch $@ -r $^
+
 # vim: set noet sw=4 ts=4:
-- 
cgit