Fix cmake failure trying to get SVN info for non-SVN trees.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85015 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Basic/CMakeLists.txt b/lib/Basic/CMakeLists.txt
index 527ebf965934b4de53343079d13bb7504e837dc5..1a89acc65af3630a2515cd250cd34b7f231b97c9 100644 (file)
--- a/lib/Basic/CMakeLists.txt
+++ b/lib/Basic/CMakeLists.txt
@@ -18,7 +18,7 @@ add_clang_library(clangBasic
 # FIXME: This only gets updated when CMake is run, so this revision number
 # may be out-of-date!
 find_package(Subversion)
-if (Subversion_FOUND)
+if (Subversion_FOUND AND EXISTS "${CLANG_SOURCE_DIR}/.svn")
   Subversion_WC_INFO(${CLANG_SOURCE_DIR} CLANG)
   set_source_files_properties(Version.cpp
     PROPERTIES COMPILE_DEFINITIONS "SVN_REVISION=\"${CLANG_WC_REVISION}\"")