[unittests] Build LLVMTestingSupport for out-of-source builds

mgorny · mgorny · commit d5ac1812b7fa · 2017-08-21T17:41:39.000Z
The Process/gdb-remote test now requires the LLVMTestingSupport library that is not installed by LLVM. As a result, when doing an out-of-source build it fails being unable to find the library. To solve that, build a local copy of the library when building LLDB with unittests and LLVM sources available. This is based on how we deal with bundled gtest sources. Differential Revision: https://reviews.llvm.org/D36886 llvm-svn: 311355
diff --git a/lldb/unittests/CMakeLists.txt b/lldb/unittests/CMakeLists.txt
@@ -19,6 +19,12 @@ if (LLDB_BUILT_STANDALONE)
   if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest AND NOT TARGET gtest)
     add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/unittest utils/unittest)
   endif()
+  # LLVMTestingSupport library is needed for Process/gdb-remote.
+  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()
 
 function(add_lldb_unittest test_name)
