From af7726eb9cb3d3da2428e35dbd3a3f38262fa3ed Mon Sep 17 00:00:00 2001
From: Doug Gregor <dgregor@apple.com>
Date: Fri, 8 May 2020 15:48:21 -0700
Subject: [PATCH] [CMake] Export SwiftDriver so other CMake projects can link
 against it

---
 CMakeLists.txt                           | 1 +
 Sources/SwiftDriver/CMakeLists.txt       | 7 +++++++
 Sources/SwiftOptions/CMakeLists.txt      | 3 +++
 cmake/modules/CMakeLists.txt             | 8 ++++++++
 cmake/modules/SwiftDriverConfig.cmake.in | 3 +++
 5 files changed, 22 insertions(+)
 create mode 100644 cmake/modules/CMakeLists.txt
 create mode 100644 cmake/modules/SwiftDriverConfig.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b054a2a0a..6ee87a2fd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,3 +44,4 @@ find_package(Foundation QUIET)
 find_package(Yams CONFIG REQUIRED)
 
 add_subdirectory(Sources)
+add_subdirectory(cmake/modules)
diff --git a/Sources/SwiftDriver/CMakeLists.txt b/Sources/SwiftDriver/CMakeLists.txt
index a3802b4a2..d1944e833 100644
--- a/Sources/SwiftDriver/CMakeLists.txt
+++ b/Sources/SwiftDriver/CMakeLists.txt
@@ -68,3 +68,10 @@ target_link_libraries(SwiftDriver PUBLIC
   llbuildSwift
   CYaml
   Yams)
+
+set_property(GLOBAL APPEND PROPERTY SWIFTDRIVER_EXPORTS SwiftDriver)
+
+# NOTE: workaround for CMake not setting up include flags yet
+set_target_properties(SwiftDriver PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
diff --git a/Sources/SwiftOptions/CMakeLists.txt b/Sources/SwiftOptions/CMakeLists.txt
index 34bd1cd8f..577ad832b 100644
--- a/Sources/SwiftOptions/CMakeLists.txt
+++ b/Sources/SwiftOptions/CMakeLists.txt
@@ -15,9 +15,12 @@ add_library(SwiftOptions
   OptionParsing.swift
   Options.swift
   PrefixTrie.swift)
+
 target_link_libraries(SwiftOptions PUBLIC
   TSCBasic)
 
+set_property(GLOBAL APPEND PROPERTY SWIFTDRIVER_EXPORTS SwiftOptions)
+
 # NOTE: workaround for CMake not setting up include flags yet
 set_target_properties(SwiftOptions PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
diff --git a/cmake/modules/CMakeLists.txt b/cmake/modules/CMakeLists.txt
new file mode 100644
index 000000000..0c7f7ade2
--- /dev/null
+++ b/cmake/modules/CMakeLists.txt
@@ -0,0 +1,8 @@
+set(SWIFTDRIVER_EXPORTS_FILE ${CMAKE_CURRENT_BINARY_DIR}/SwiftDriverExports.cmake)
+
+configure_file(SwiftDriverConfig.cmake.in
+  ${CMAKE_CURRENT_BINARY_DIR}/SwiftDriverConfig.cmake)
+
+get_property(SWIFTDRIVER_EXPORTS GLOBAL PROPERTY SWIFTDRIVER_EXPORTS)
+export(TARGETS ${SWIFTDRIVER_EXPORTS}
+  FILE ${SWIFTDRIVER_EXPORTS_FILE})
diff --git a/cmake/modules/SwiftDriverConfig.cmake.in b/cmake/modules/SwiftDriverConfig.cmake.in
new file mode 100644
index 000000000..78e3070cb
--- /dev/null
+++ b/cmake/modules/SwiftDriverConfig.cmake.in
@@ -0,0 +1,3 @@
+if(NOT TARGET SwiftDriver)
+  include(@SWIFTDRIVER_EXPORTS_FILE@)
+endif()