[CMake] Don't cache LLVM_MAIN_SRC_DIR
If we're not in a standalone build, this variable should be already
set, so there's no need to set it again or to cache it.
Differential Revision: https://reviews.llvm.org/D57993
git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@353915 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3206c15..27d8bc5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,7 +115,6 @@
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
else()
- set(LLVM_MAIN_SRC_DIR "${CMAKE_SOURCE_DIR}" CACHE PATH "Path to LLVM source tree")
set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py")
endif()
