Swift: Add CMAKE_LINKER_TYPE support

Extend commit 96a953b1ed (Add options to specify linker tool, 2023-09-27,
v3.29.0-rc1~577^2) with the `CMAKE_Swift_USING_LINKER_*` variables
needed to support `CMAKE_LINKER_TYPE` for Swift.

6 files changed, 42 insertions, 5 deletions

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index d9090d6..f10e72d 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -783,6 +783,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "(Linux|Darwin|Windows)"
     AND CMAKE_C_COMPILER_ID MATCHES "^(AppleClang|Clang|GNU|MSVC|NVIDIA)$"
     AND NOT CMAKE_GENERATOR STREQUAL "Green Hills MULTI")
   add_RunCMake_test(LinkerSelection -DCMake_TEST_CUDA=${CMake_TEST_CUDA}
+                                    -DCMake_TEST_Swift=${CMake_TEST_Swift}
                                     -DCMAKE_C_COMPILER_ID=${CMAKE_C_COMPILER_ID}
                                     -DCMAKE_C_COMPILER_VERSION=${CMAKE_C_COMPILER_VERSION})
 endif()
diff --git a/Tests/RunCMake/LinkerSelection/AppleClassic.cmake b/Tests/RunCMake/LinkerSelection/AppleClassic.cmake
index 62a12ad..170ae0c 100644
--- a/Tests/RunCMake/LinkerSelection/AppleClassic.cmake
+++ b/Tests/RunCMake/LinkerSelection/AppleClassic.cmake
@@ -1,7 +1,12 @@
-
 enable_language(C)
 
 set(CMAKE_LINKER_TYPE APPLE_CLASSIC)
 
 add_executable(main main.c)
 target_link_libraries(main PRIVATE m m)
+
+if(CMake_TEST_Swift)
+  enable_language(Swift)
+  add_executable(main_swift main.swift)
+  target_link_libraries(main_swift PRIVATE m m)
+endif()
diff --git a/Tests/RunCMake/LinkerSelection/CustomLinkerType.cmake b/Tests/RunCMake/LinkerSelection/CustomLinkerType.cmake
index 4bf98b0..1121608 100644
--- a/Tests/RunCMake/LinkerSelection/CustomLinkerType.cmake
+++ b/Tests/RunCMake/LinkerSelection/CustomLinkerType.cmake
@@ -15,6 +15,14 @@ if(CMake_TEST_CUDA)
   set_property(TARGET mainCU PROPERTY LINKER_TYPE "$<$<LINK_LANGUAGE:C>:FOO_C>$<$<LINK_LANGUAGE:CUDA>:FOO_CUDA>")
 endif()
 
+if(CMake_TEST_Swift)
+  enable_language(Swift)
+
+  set(CMAKE_Swift_USING_LINKER_FOO_Swift "${CMAKE_Swift_USING_LINKER_LLD}")
+  add_executable(mainSwift main.swift)
+  set_property(TARGET mainSwift PROPERTY LINKER_TYPE FOO_Swift)
+endif()
+
 #
 # Generate file for validation
 #
@@ -32,5 +40,14 @@ if(CMake_TEST_CUDA)
   string(APPEND LINKER_TYPE_OPTION "|${CUDA_LINKER}")
 endif()
 
+if(CMake_TEST_Swift)
+  if(CMAKE_Swift_USING_LINKER_MODE STREQUAL "TOOL")
+    cmake_path(GET CMAKE_Swift_USING_LINKER_FOO_Swift FILENAME Swift_LINKER)
+  else()
+    set(Swift_LINKER "${CMAKE_Swift_USING_LINKER_FOO_Swift}")
+  endif()
+  string(APPEND LINKER_TYPE_OPTION "|${Swift_LINKER}")
+endif()
+
 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/LINKER_TYPE_OPTION.cmake"
   "set(LINKER_TYPE_OPTION \"${LINKER_TYPE_OPTION}\")\n")
diff --git a/Tests/RunCMake/LinkerSelection/RunCMakeTest.cmake b/Tests/RunCMake/LinkerSelection/RunCMakeTest.cmake
index 8929a0d..0a3f01c 100644
--- a/Tests/RunCMake/LinkerSelection/RunCMakeTest.cmake
+++ b/Tests/RunCMake/LinkerSelection/RunCMakeTest.cmake
@@ -17,12 +17,11 @@ endif()
 find_program(LLD_LINKER NAMES ${LINKER_NAMES})
 
 macro(run_cmake_and_build test)
-  run_cmake_with_options(${test} -DCMake_TEST_CUDA=${CMake_TEST_CUDA})
+  run_cmake_with_options(${test}
+    -DCMake_TEST_CUDA=${CMake_TEST_CUDA}
+    -DCMake_TEST_Swift=${CMake_TEST_Swift})
   set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${test}-build)
   set(RunCMake_TEST_NO_CLEAN 1)
-  if(CMake_TEST_CUDA)
-    string(APPEND "|${CMAKE_CUDA_USING_LINKER_LLD}")
-  endif()
   run_cmake_command(${test}-build ${CMAKE_COMMAND} --build . --config Release --verbose ${ARGN})
 
   unset(RunCMake_TEST_BINARY_DIR)
@@ -34,6 +33,7 @@ if(LLD_LINKER)
     set(CMAKE_VERBOSE_MAKEFILE TRUE)
     set(CMAKE_C_USE_RESPONSE_FILE_FOR_LIBRARIES FALSE)
     set(CMAKE_CUDA_USE_RESPONSE_FILE_FOR_LIBRARIES FALSE)
+    set(CMAKE_Swift_USE_RESPONSE_FILE_FOR_LIBRARIES FALSE)
 
     run_cmake_and_build(ValidLinkerType)
     run_cmake_and_build(CustomLinkerType)
diff --git a/Tests/RunCMake/LinkerSelection/ValidLinkerType.cmake b/Tests/RunCMake/LinkerSelection/ValidLinkerType.cmake
index a685ac1..9170f5c 100644
--- a/Tests/RunCMake/LinkerSelection/ValidLinkerType.cmake
+++ b/Tests/RunCMake/LinkerSelection/ValidLinkerType.cmake
@@ -11,6 +11,11 @@ if(CMake_TEST_CUDA)
   add_executable(mainCU main.cu)
 endif()
 
+if(CMake_TEST_Swift)
+  enable_language(Swift)
+  add_executable(mainSwift main.swift)
+endif()
+
 #
 # Generate file for validation
 #
@@ -27,6 +32,14 @@ if(CMake_TEST_CUDA)
   endif()
   string(APPEND LINKER_TYPE_OPTION "|${CUDA_LINKER}")
 endif()
+if(CMake_TEST_Swift)
+  if(CMAKE_Swift_USING_LINKER_MODE STREQUAL "TOOL")
+    cmake_path(GET CMAKE_Swift_USING_LINKER_LLD FILENAME LINKER_TYPE_OPTION)
+  else()
+    set(Swift_LINKER "${CMAKE_Swift_USING_LINKER_LLD}")
+  endif()
+  string(APPEND LINKER_TYPE_OPTION "|${Swift_LINKER}")
+endif()
 
 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/LINKER_TYPE_OPTION.cmake"
   "set(LINKER_TYPE_OPTION \"${LINKER_TYPE_OPTION}\")\n")
diff --git a/Tests/RunCMake/LinkerSelection/main.swift b/Tests/RunCMake/LinkerSelection/main.swift
new file mode 100644
index 0000000..b80e322
--- /dev/null
+++ b/Tests/RunCMake/LinkerSelection/main.swift
@@ -0,0 +1 @@
+print("hi")