From bdc0b7cf8fff9f997c55daf3978fe2462ae5fbc7 Mon Sep 17 00:00:00 2001
From: Dave Lee <davelee.com@gmail.com>
Date: Thu, 4 Apr 2019 16:16:12 -0700
Subject: [PATCH] [IndexStore] Enable blocks support on Linux builds

---
 tools/IndexStore/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/IndexStore/CMakeLists.txt b/tools/IndexStore/CMakeLists.txt
index 1bcfc073478..bf0707051eb 100644
--- a/tools/IndexStore/CMakeLists.txt
+++ b/tools/IndexStore/CMakeLists.txt
@@ -49,6 +49,10 @@ if(APPLE)
 
   set_property(TARGET IndexStore APPEND_STRING PROPERTY
                LINK_FLAGS ${INDEXSTORE_LINK_FLAGS})
+else()
+  # Blocks are off by default on non-darwin platforms.
+  target_compile_options(IndexStore PRIVATE -fblocks)
+  target_link_libraries(IndexStore PRIVATE BlocksRuntime)
 endif()
 
 if (LLVM_INSTALL_TOOLCHAIN_ONLY)