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 79932799b184e1e84bd9b750782b945568d7e084..38b11ce8c9ac5456293e43e0dec4faea10089d97 100644 (file)
--- a/lib/Driver/Makefile
+++ b/lib/Driver/Makefile
@@ -12,12 +12,14 @@ LIBRARYNAME := clangDriver
 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;                    \