Merging r371733:

mgorny · tstellar · commit 2cec4d0850af · 2019-11-12T16:37:22.000-08:00
------------------------------------------------------------------------ r371733 | mgorny | 2019-09-12 06:06:12 -0700 (Thu, 12 Sep 2019) | 7 lines [clang] [unittest] Import LLVMTestingSupport if necessary Add LLVMTestingSupport directory from LLVM_MAIN_SRC_DIR when building clang stand-alone and LLVMTestingSupport library is not present. This is needed to fix stand-alone builds without clang-tools-extra. Differential Revision: https://reviews.llvm.org/D67452 ------------------------------------------------------------------------
diff --git a/clang/unittests/CMakeLists.txt b/clang/unittests/CMakeLists.txt
@@ -1,6 +1,15 @@
 add_custom_target(ClangUnitTests)
 set_target_properties(ClangUnitTests PROPERTIES FOLDER "Clang tests")
 
+if(CLANG_BUILT_STANDALONE)
+  # LLVMTestingSupport library is needed for some of the unittests.
+  if (EXISTS ${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
+      AND NOT TARGET LLVMTestingSupport)
+    add_subdirectory(${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
+      lib/Testing/Support)
+  endif()
+endif()
+
 # add_clang_unittest(test_dirname file1.cpp file2.cpp)
 #
 # Will compile the list of files together and link against the clang
