CUDA: Add option to run the compiler through launcher tools

Add a `CUDA_COMPILER_LAUNCHER` target property like those added for C
and CXX by commit v3.4.0-rc1~450^2 (Add options to launch the compiler
through tools like ccache or distcc, 2015-06-04).

Fixes: #16953

7 files changed, 26 insertions, 5 deletions

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 79f487d..7a59824 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -341,6 +341,9 @@ if("${CMAKE_GENERATOR}" MATCHES "Make|Ninja")
   add_RunCMake_test(ClangTidy -DPSEUDO_TIDY=$<TARGET_FILE:pseudo_tidy>)
   add_RunCMake_test(IncludeWhatYouUse -DPSEUDO_IWYU=$<TARGET_FILE:pseudo_iwyu>)
   add_RunCMake_test(Cpplint -DPSEUDO_CPPLINT=$<TARGET_FILE:pseudo_cpplint>)
+  if(DEFINED CMake_TEST_CUDA)
+    list(APPEND CompilerLauncher_ARGS -DCMake_TEST_CUDA=${CMake_TEST_CUDA})
+  endif()
   add_RunCMake_test(CompilerLauncher)
 endif()
 
diff --git a/Tests/RunCMake/CompilerLauncher/CUDA-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/CUDA-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/CompilerLauncher/CUDA-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/CompilerLauncher/CUDA-launch-Build-stdout.txt b/Tests/RunCMake/CompilerLauncher/CUDA-launch-Build-stdout.txt
new file mode 100644
index 0000000..3313e31
--- /dev/null
+++ b/Tests/RunCMake/CompilerLauncher/CUDA-launch-Build-stdout.txt
@@ -0,0 +1 @@
+.*-E env USED_LAUNCHER=1.*
diff --git a/Tests/RunCMake/CompilerLauncher/CUDA-launch.cmake b/Tests/RunCMake/CompilerLauncher/CUDA-launch.cmake
new file mode 100644
index 0000000..6b4b816
--- /dev/null
+++ b/Tests/RunCMake/CompilerLauncher/CUDA-launch.cmake
@@ -0,0 +1,3 @@
+set(CTEST_USE_LAUNCHERS 1)
+include(CTestUseLaunchers)
+include(CUDA.cmake)
diff --git a/Tests/RunCMake/CompilerLauncher/CUDA.cmake b/Tests/RunCMake/CompilerLauncher/CUDA.cmake
new file mode 100644
index 0000000..fe5560b
--- /dev/null
+++ b/Tests/RunCMake/CompilerLauncher/CUDA.cmake
@@ -0,0 +1,4 @@
+enable_language(CUDA)
+set(CMAKE_CUDA_COMPILER_LAUNCHER "${CMAKE_COMMAND};-E;env;USED_LAUNCHER=1")
+set(CMAKE_VERBOSE_MAKEFILE TRUE)
+add_executable(main main.cu)
diff --git a/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake b/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
index 5884d5c..ab26512 100644
--- a/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CompilerLauncher/RunCMakeTest.cmake
@@ -15,9 +15,14 @@ function(run_compiler_launcher lang)
   run_cmake_command(${lang}-Build ${CMAKE_COMMAND} --build . ${verbose_args})
 endfunction()
 
-run_compiler_launcher(C)
-run_compiler_launcher(CXX)
-if (NOT RunCMake_GENERATOR STREQUAL "Watcom WMake")
-  run_compiler_launcher(C-launch)
-  run_compiler_launcher(CXX-launch)
+set(langs C CXX)
+if(CMake_TEST_CUDA)
+  list(APPEND langs CUDA)
 endif()
+
+foreach(lang ${langs})
+  run_compiler_launcher(${lang})
+  if (NOT RunCMake_GENERATOR STREQUAL "Watcom WMake")
+    run_compiler_launcher(${lang}-launch)
+  endif()
+endforeach()
diff --git a/Tests/RunCMake/CompilerLauncher/main.cu b/Tests/RunCMake/CompilerLauncher/main.cu
new file mode 100644
index 0000000..f8b643a
--- /dev/null
+++ b/Tests/RunCMake/CompilerLauncher/main.cu
@@ -0,0 +1,4 @@
+int main()
+{
+  return 0;
+}