<rdar://problem/13358795> Teach CMake to check Subversion version information at build time, not configure time.

llvm-svn: 177939
diff --git a/clang/lib/Basic/Version.cpp b/clang/lib/Basic/Version.cpp
index cd8c10f..e219a3d 100644
--- a/clang/lib/Basic/Version.cpp
+++ b/clang/lib/Basic/Version.cpp
@@ -18,6 +18,10 @@
 #include <cstdlib>
 #include <cstring>
 
+#ifdef HAVE_SVN_VERSION_INC
+#  include "SVNVersion.inc"
+#endif
+
 namespace clang {
 
 std::string getClangRepositoryPath() {