Fix tests

Author: OliverRietmann

CMakeLists.txt

@@ -1,11 +1,15 @@
 cmake_minimum_required(VERSION 4.0)
 project(memlayout LANGUAGES CXX)
 
-#option(ENABLE_CPU "Build CPU tests" ON)
-#option(ENABLE_CUDA "Build CUDA tests" ON)
+option(BUILD_TESTING "Build unit tests" OFF)
+option(BUILD_DOCS "Build documentation" OFF)
 
 add_subdirectory(memlayout)
 
-add_subdirectory(tests EXCLUDE_FROM_ALL)
+if(BUILD_TESTING)
+  add_subdirectory(tests)
+endif()
 
-add_subdirectory(docs EXCLUDE_FROM_ALL)
+if(BUILD_DOCS)
+  add_subdirectory(docs)
+endif()

tests/CMakeLists.txt

@@ -1,3 +1,7 @@
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
+
 include(FetchContent)
 FetchContent_Declare(
     googletest
@@ -10,4 +14,9 @@ include(GoogleTest)
 
 add_subdirectory(cpu)
 
-add_subdirectory(gpu)
+find_package(CUDAToolkit QUIET)
+if(CUDAToolkit_FOUND OR CMAKE_CUDA_COMPILER)
+    add_subdirectory(gpu)
+else()
+    message(STATUS "CUDA not found - skipping GPU tests")
+endif()

tests/cpu/CMakeLists.txt

@@ -1,7 +1,3 @@
-set(CMAKE_CXX_STANDARD 20)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
-
 add_executable(test_cpu test_cpu.cpp)
 target_include_directories(test_cpu PUBLIC ${CMAKE_SOURCE_DIR}/tests/include)
 target_link_libraries(test_cpu PRIVATE memlayout::Wrapper GTest::gtest_main)