strictly evaluate SVN_REVISION so that svnversion is run once instead of 4 times.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67365 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Makefile b/lib/Driver/Makefile
index 7993279..38b11ce 100644
--- a/lib/Driver/Makefile
+++ b/lib/Driver/Makefile
@@ -12,12 +12,14 @@
BUILD_ARCHIVE = 1
CXXFLAGS = -fno-rtti
-SVN_REVISION = $(shell cd $(PROJ_SRC_DIR)/../.. && svnversion)
-
-CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include -DTARGET_TRIPLE='"$(TARGET_TRIPLE)"' -DSVN_REVISION='"$(SVN_REVISION)"'
include $(LEVEL)/Makefile.common
+SVN_REVISION := $(shell cd $(PROJ_SRC_DIR)/../.. && svnversion)
+
+CPP.Defines += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include \
+ -DTARGET_TRIPLE='"$(TARGET_TRIPLE)"' -DSVN_REVISION='"$(SVN_REVISION)"'
+
$(ObjDir)/.ver-svn .ver:
@if [ '$(SVN_REVISION)' != '$(shell cat $(ObjDir)/.ver-svn 2>/dev/null)' ]; then\
echo '$(SVN_REVISION)' > $(ObjDir)/.ver-svn; \