From 8aa0b63bc68ebd5d7eb3f7a02f9520dac54bf813 Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Thu, 27 Jun 2019 21:28:48 -0700
Subject: Swift: add rules for static linking

The Swift driver recently learnt how to generate static libraries using
the `-static` flag.  This enables us to generate proper static libraries
with dependency tracking with Swift as well.
---
 Modules/CMakeSwiftInformation.cmake | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Modules/CMakeSwiftInformation.cmake b/Modules/CMakeSwiftInformation.cmake
index 6f99c1f..f62f61b 100644
--- a/Modules/CMakeSwiftInformation.cmake
+++ b/Modules/CMakeSwiftInformation.cmake
@@ -70,6 +70,12 @@ if(NOT CMAKE_Swift_LINK_EXECUTABLE)
 endif()
 
 if(NOT CMAKE_Swift_CREATE_STATIC_LIBRARY)
+  if(CMAKE_Swift_COMPILER_TARGET)
+    set(CMAKE_Swift_CREATE_STATIC_LIBRARY "${CMAKE_Swift_COMPILER} -target <CMAKE_Swift_COMPILER_TARGET> -output-file-map <SWIFT_OUTPUT_FILE_MAP> -incremental -emit-library -static -o <TARGET> -module-name <SWIFT_MODULE_NAME> -module-link-name <SWIFT_LIBRARY_NAME> -emit-module -emit-module-path <SWIFT_MODULE> -emit-dependencies <DEFINES> <FLAGS> <INCLUDES> <SWIFT_SOURCES> <LINK_FLAGS> <LINK_LIBRARIES>")
+  else()
+    set(CMAKE_Swift_CREATE_STATIC_LIBRARY "${CMAKE_Swift_COMPILER} -output-file-map <SWIFT_OUTPUT_FILE_MAP> -incremental -emit-library -static -o <TARGET> -module-name <SWIFT_MODULE_NAME> -module-link-name <SWIFT_LIBRARY_NAME> -emit-module -emit-module-path <SWIFT_MODULE> -emit-dependencies <DEFINES> <FLAGS> <INCLUDES> <SWIFT_SOURCES> <LINK_FLAGS> <LINK_LIBRARIES>")
+  endif()
+
   set(CMAKE_Swift_ARCHIVE_CREATE "<CMAKE_AR> crs <TARGET> <OBJECTS>")
   set(CMAKE_Swift_ARCHIVE_FINISH "")
 endif()
-- 
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