Merge topic 'linker-launcher'

ae108418ae Launchers: Support setting linker launchers
92c8b83641 cmNinjaNormalTargetGenerator: Fix "Language" rule variable
d93bfd95f8 Tests/CompilerLauncher: Fix file names and clarify comment

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6092

49 files changed, 123 insertions, 1 deletions

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 14a7fa3..d02d7a2 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -732,12 +732,14 @@ if("${CMAKE_GENERATOR}" MATCHES "Make|Ninja")
   endif()
   if (APPLE AND CMAKE_C_COMPILER_ID MATCHES "Clang|GNU")
     list(APPEND CompilerLauncher_ARGS -DCMake_TEST_OBJC=1)
+    list(APPEND LinkerLauncher_ARGS -DCMake_TEST_OBJC=1)
   endif()
   add_RunCMake_test(CompilerLauncher)
   set_property(TEST RunCMake.CompilerLauncher APPEND
     PROPERTY LABELS "CUDA;ISPC")
   add_RunCMake_test(ctest_labels_for_subprojects)
   add_RunCMake_test(CompilerArgs)
+  add_RunCMake_test(LinkerLauncher)
 endif()
 
 set(cpack_tests
diff --git a/Tests/RunCMake/CompilerLauncher/ISPC-env-launch-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/C-launch-env-Build-stdout.txt
index 3313e31..3313e31 100644
--- a/Tests/RunCMake/CompilerLauncher/ISPC-env-launch-Build-stdout.txt
+++ b/Tests/RunCMake/CompilerLauncher/C-launch-env-Build-stdout.txt
diff --git a/Tests/RunCMake/CompilerLauncher/Fortran-env-launch-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/CUDA-launch-env-Build-stdout.txt
index 3313e31..3313e31 100644
--- a/Tests/RunCMake/CompilerLauncher/Fortran-env-launch-Build-stdout.txt
+++ b/Tests/RunCMake/CompilerLauncher/CUDA-launch-env-Build-stdout.txt
diff --git a/Tests/RunCMake/CompilerLauncher/CXX-env-launch-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/CXX-launch-env-Build-stdout.txt
index 3313e31..3313e31 100644
--- a/Tests/RunCMake/CompilerLauncher/CXX-env-launch-Build-stdout.txt
+++ b/Tests/RunCMake/CompilerLauncher/CXX-launch-env-Build-stdout.txt
diff --git a/Tests/RunCMake/CompilerLauncher/CUDA-env-launch-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/Fortran-launch-env-Build-stdout.txt
index 3313e31..3313e31 100644
--- a/Tests/RunCMake/CompilerLauncher/CUDA-env-launch-Build-stdout.txt
+++ b/Tests/RunCMake/CompilerLauncher/Fortran-launch-env-Build-stdout.txt
diff --git a/Tests/RunCMake/CompilerLauncher/C-env-launch-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/ISPC-launch-env-Build-stdout.txt
index 3313e31..3313e31 100644
--- a/Tests/RunCMake/CompilerLauncher/C-env-launch-Build-stdout.txt
+++ b/Tests/RunCMake/CompilerLauncher/ISPC-launch-env-Build-stdout.txt
diff --git a/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake b/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
index 293d711..787282a 100644
--- a/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
@@ -1,7 +1,7 @@
 include(RunCMake)
 
 function(run_compiler_launcher lang)
-  # Use a single build tree for tests without cleaning.
+  # Preserve build tree so we can reuse it for the ${lang}-Build subtest below
   set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${lang}-build)
   set(RunCMake_TEST_NO_CLEAN 1)
   file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
diff --git a/Tests/RunCMake/LinkerLauncher/C-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/C-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/C-common.cmake b/Tests/RunCMake/LinkerLauncher/C-common.cmake
new file mode 100644
index 0000000..96b004b
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-common.cmake
@@ -0,0 +1,3 @@
+enable_language(C)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.c)
diff --git a/Tests/RunCMake/LinkerLauncher/C-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/C-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/C-env.cmake b/Tests/RunCMake/LinkerLauncher/C-env.cmake
new file mode 100644
index 0000000..09b5167
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-env.cmake
@@ -0,0 +1 @@
+include(C-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/C-launch-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/C-launch-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-launch-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/C-launch-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/C-launch-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-launch-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/C-launch-env.cmake b/Tests/RunCMake/LinkerLauncher/C-launch-env.cmake
new file mode 100644
index 0000000..68abcb5
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-launch-env.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(C-env.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/C-launch.cmake b/Tests/RunCMake/LinkerLauncher/C-launch.cmake
new file mode 100644
index 0000000..e66ca20
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C-launch.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(C.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/C.cmake b/Tests/RunCMake/LinkerLauncher/C.cmake
new file mode 100644
index 0000000..b55ca8e
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/C.cmake
@@ -0,0 +1,2 @@
+set(CMAKE_C_LINKER_LAUNCHER "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
+include(C-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/CMakeLists.txt b/Tests/RunCMake/LinkerLauncher/CMakeLists.txt
new file mode 100644
index 0000000..7cabeb6
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.20)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/CXX-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-common.cmake b/Tests/RunCMake/LinkerLauncher/CXX-common.cmake
new file mode 100644
index 0000000..3d2ee00
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-common.cmake
@@ -0,0 +1,3 @@
+enable_language(CXX)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.cxx)
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/CXX-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-env.cmake b/Tests/RunCMake/LinkerLauncher/CXX-env.cmake
new file mode 100644
index 0000000..db36956
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-env.cmake
@@ -0,0 +1 @@
+include(CXX-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-launch-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/CXX-launch-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-launch-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-launch-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/CXX-launch-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-launch-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-launch-env.cmake b/Tests/RunCMake/LinkerLauncher/CXX-launch-env.cmake
new file mode 100644
index 0000000..a65cc89
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-launch-env.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(CXX-env.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/CXX-launch.cmake b/Tests/RunCMake/LinkerLauncher/CXX-launch.cmake
new file mode 100644
index 0000000..3002c9d
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX-launch.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(CXX.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/CXX.cmake b/Tests/RunCMake/LinkerLauncher/CXX.cmake
new file mode 100644
index 0000000..4326614
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/CXX.cmake
@@ -0,0 +1,2 @@
+set(CMAKE_CXX_LINKER_LAUNCHER "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
+include(CXX-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJC-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-common.cmake b/Tests/RunCMake/LinkerLauncher/OBJC-common.cmake
new file mode 100644
index 0000000..7b565f4
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-common.cmake
@@ -0,0 +1,3 @@
+enable_language(OBJC)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.m)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJC-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-env.cmake b/Tests/RunCMake/LinkerLauncher/OBJC-env.cmake
new file mode 100644
index 0000000..949e88d
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-env.cmake
@@ -0,0 +1 @@
+include(OBJC-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-launch-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJC-launch-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-launch-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-launch-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJC-launch-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-launch-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-launch-env.cmake b/Tests/RunCMake/LinkerLauncher/OBJC-launch-env.cmake
new file mode 100644
index 0000000..1cf13d3
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-launch-env.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(OBJC-env.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC-launch.cmake b/Tests/RunCMake/LinkerLauncher/OBJC-launch.cmake
new file mode 100644
index 0000000..43e8521
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC-launch.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(OBJC.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJC.cmake b/Tests/RunCMake/LinkerLauncher/OBJC.cmake
new file mode 100644
index 0000000..e0360b3
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJC.cmake
@@ -0,0 +1,2 @@
+set(CMAKE_OBJC_LINKER_LAUNCHER "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
+include(OBJC-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJCXX-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-common.cmake b/Tests/RunCMake/LinkerLauncher/OBJCXX-common.cmake
new file mode 100644
index 0000000..e2ee4eb
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-common.cmake
@@ -0,0 +1,3 @@
+enable_language(OBJCXX)
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.mm)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJCXX-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-env.cmake b/Tests/RunCMake/LinkerLauncher/OBJCXX-env.cmake
new file mode 100644
index 0000000..3ed966d
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-env.cmake
@@ -0,0 +1 @@
+include(OBJCXX-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-env-Build-stdout.txt b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-env-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-env-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-env.cmake b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-env.cmake
new file mode 100644
index 0000000..04c916a
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch-env.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(OBJCXX-env.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX-launch.cmake b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch.cmake
new file mode 100644
index 0000000..5a54bff
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX-launch.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(OBJCXX.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/OBJCXX.cmake b/Tests/RunCMake/LinkerLauncher/OBJCXX.cmake
new file mode 100644
index 0000000..3667745
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/OBJCXX.cmake
@@ -0,0 +1,2 @@
+set(CMAKE_OBJCXX_LINKER_LAUNCHER "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
+include(OBJCXX-common.cmake)
diff --git a/Tests/RunCMake/LinkerLauncher/RunCMakeTest.cmake b/Tests/RunCMake/LinkerLauncher/RunCMakeTest.cmake
new file mode 100644
index 0000000..8f2bf63
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/RunCMakeTest.cmake
@@ -0,0 +1,37 @@
+include(RunCMake)
+
+function(run_linker_launcher lang)
+  # Preserve build tree so we can reuse it for the ${lang}-Build subtest below
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${lang}-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+  run_cmake(${lang})
+
+  set(RunCMake_TEST_OUTPUT_MERGE 1)
+  if("${RunCMake_GENERATOR}" MATCHES "Ninja")
+    set(verbose_args -- -v)
+  endif()
+  run_cmake_command(${lang}-Build ${CMAKE_COMMAND} --build . ${verbose_args})
+endfunction()
+
+function(run_linker_launcher_env lang)
+  string(REGEX REPLACE "-.*" "" core_lang "${lang}")
+  set(ENV{CMAKE_${core_lang}_LINKER_LAUNCHER} "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
+  run_linker_launcher(${lang})
+  unset(ENV{CMAKE_${core_lang}_LINKER_LAUNCHER})
+endfunction()
+
+set(langs C CXX)
+if(CMake_TEST_OBJC)
+  list(APPEND langs OBJC OBJCXX)
+endif()
+
+foreach(lang ${langs})
+  run_linker_launcher(${lang})
+  run_linker_launcher_env(${lang}-env)
+  if(NOT RunCMake_GENERATOR STREQUAL "Watcom WMake")
+    run_linker_launcher(${lang}-launch)
+    run_linker_launcher_env(${lang}-launch-env)
+  endif()
+endforeach()
diff --git a/Tests/RunCMake/LinkerLauncher/main.c b/Tests/RunCMake/LinkerLauncher/main.c
new file mode 100644
index 0000000..8488f4e
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/main.c
@@ -0,0 +1,4 @@
+int main(void)
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/LinkerLauncher/main.cxx b/Tests/RunCMake/LinkerLauncher/main.cxx
new file mode 100644
index 0000000..f8b643a
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/main.cxx
@@ -0,0 +1,4 @@
+int main()
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/LinkerLauncher/main.m b/Tests/RunCMake/LinkerLauncher/main.m
new file mode 100644
index 0000000..8488f4e
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/main.m
@@ -0,0 +1,4 @@
+int main(void)
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/LinkerLauncher/main.mm b/Tests/RunCMake/LinkerLauncher/main.mm
new file mode 100644
index 0000000..f8b643a
--- /dev/null
+++ b/Tests/RunCMake/LinkerLauncher/main.mm
@@ -0,0 +1,4 @@
+int main()
+{
+  return 0;
+}