From 01fdb2818e25f73f12320385d43f97f658d3d6ee Mon Sep 17 00:00:00 2001
From: Doug Gregor <dgregor@apple.com>
Date: Tue, 9 Oct 2018 16:20:28 -0700
Subject: [PATCH] [CMake] Make sure to link swiftrt.o when building the Swift
 Dispatch overlay.

Because we are linking libdispatch through clang rather than swift, we need to
explicitly add swiftrt.o, which is needed by ELF and COFF to register metadata
sections. Fixes rdar://problem/44941707.
---
 src/CMakeLists.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 80bbd54b1..9782fed83 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -115,7 +115,8 @@ if(ENABLE_SWIFT)
   target_sources(dispatch
                  PRIVATE
                    swift/DispatchStubs.cc
-                   ${CMAKE_CURRENT_BINARY_DIR}/swiftDispatch.o)
+                   ${CMAKE_CURRENT_BINARY_DIR}/swiftDispatch.o
+                   ${SWIFT_RUNTIME_LIBDIR}/swiftrt.o)
   if(CMAKE_BUILD_TYPE MATCHES Debug)
     target_link_libraries(dispatch
                           PRIVATE