Refactor Catch2 CMake to reuse existing build system.

CMakeLists.txt

@@ -52,14 +52,6 @@ option(CUB_ENABLE_HEADER_TESTING "Test that all public headers compile." ON)
 option(CUB_ENABLE_TESTING "Build CUB testing suite." ON)
 option(CUB_ENABLE_EXAMPLES "Build CUB examples." ON)
 
-option(CUB_ENABLE_CT_PROFILING "Enable compilation time profiling" OFF)
-
-if ("NVCXX" STREQUAL "${CMAKE_CUDA_COMPILER_ID}")
-  # NVBugs 200770766
-  set(CUB_SEPARATE_CATCH2 ON)
-else ()
-  option(CUB_SEPARATE_CATCH2 "Build each catch2 as a separate executable." OFF)
-endif ()
 # This is needed for NVCXX QA, which requires a static set of executable names.
 # Only a single dialect may be enabled when this is off.
 option(CUB_ENABLE_CPP_DIALECT_IN_NAMES
@@ -121,14 +113,6 @@ if (CUB_ENABLE_TESTING OR CUB_ENABLE_EXAMPLES)
 endif()
 
 if (CUB_ENABLE_TESTING)
-  include(cmake/CPM.cmake)
-  CPMAddPackage("gh:catchorg/[email protected]")
-
-  option(METAL_BUILD_DOC OFF)
-  option(METAL_BUILD_EXAMPLES OFF)
-  option(METAL_BUILD_TESTS OFF)
-  CPMAddPackage("gh:brunocodutra/[email protected]")
-
   add_subdirectory(test)
 endif()
 

cmake/CubBuildCompilerTargets.cmake

@@ -77,6 +77,7 @@ function(cub_build_compiler_targets)
   endif()
 
   if ("Clang" STREQUAL "${CMAKE_CXX_COMPILER_ID}")
+    option(CUB_ENABLE_CT_PROFILING "Enable compilation time profiling" OFF)
     if (CUB_ENABLE_CT_PROFILING)
       append_option_if_available("-ftime-trace" cxx_compile_options)
     endif()