CMake: Only add test/ subdirectory when it exists
r296685 started adding the test/ subdirectory even when
LIBCXX_INCLUDE_TESTS=OFF. This is great for testing libcxx standalone,
but it also breaks the build when the test/ subdirectory is removed
(and our submission system strips all test/ directories).
This patch updates the logic to check for test/ before adding it.
rdar://problem/31931366
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@302095 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef1726b..b062609 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -627,7 +627,12 @@
# Create the lit.site.cfg file even when LIBCXX_INCLUDE_TESTS is OFF or
# LLVM_FOUND is OFF. This allows users to run the tests manually using
# LIT without requiring a full LLVM checkout.
-add_subdirectory(test)
+#
+# However, since some submission systems strip test/ subdirectories, check for
+# it before adding it.
+if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/test")
+ add_subdirectory(test)
+endif()
if (LIBCXX_INCLUDE_TESTS)
add_subdirectory(lib/abi)
endif()