CMakeLists.txt

cmake_minimum_required(VERSION 3.18)

enable_language(CXX)

option(BUILD_CUDA_TESTS "Include tests for use of the printf library with CUDA host-side and device-side code"  OFF)
option(TEST_BROKEN_FORMATS "Include tests using non-standard-compliant format strings?" ON)

set(cuda_tests)
if(BUILD_CUDA_TESTS)
	enable_language(CUDA)
	list(APPEND CMAKE_CUDA_FLAGS "--extended-lambda --expt-relaxed-constexpr -Xcudafe --display_error_number")
	if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.18)
	    cmake_policy(SET CMP0104 OLD)
	endif()
	include(FindCUDA/select_compute_arch)
	list(APPEND cuda_tests cuda_test_suite_host cuda_test_suite_device)
	if((NOT DEFINED CUDA_ARCH_FLAGS) OR ("${CUDA_ARCH_FLAGS}" STREQUAL ""))
		cuda_select_nvcc_arch_flags(CUDA_ARCH_FLAGS_1 Auto)
		set(CUDA_ARCH_FLAGS ${CUDA_ARCH_FLAGS} CACHE STRING "CUDA -gencode parameters")
		string(REPLACE ";" " " CUDA_ARCH_FLAGS_STR "${CUDA_ARCH_FLAGS}")
	else()
		set(CUDA_ARCH_FLAGS_STR "${CUDA_ARCH_FLAGS}")
	endif()
	set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} ${CUDA_ARCH_FLAGS_STR}")
endif()

foreach(tgt ${cuda_tests})
	add_executable(${tgt} "${tgt}.cu")
	set_target_properties(
		${tgt}
		PROPERTIES
		CUDA_STANDARD 11
		CUDA_STANDARD_REQUIRED YES
		CUDA_EXTENSIONS NO
	)
endforeach()

set(tests test_suite ${cuda_tests})

add_executable(test_suite "test_suite.cpp")

foreach(tgt ${tests})
	set_target_properties(
		${tgt}
		PROPERTIES
		CXX_STANDARD 11
		CXX_STANDARD_REQUIRED YES
		CXX_EXTENSIONS NO
	)
	if (TEST_BROKEN_FORMATS)
		# ... don't worry, we'll suppress the compiler warnings for those.
		target_compile_definitions(${tgt} PRIVATE TEST_WITH_NON_STANDARD_FORMAT_STRINGS)
	endif()

	target_link_libraries(test_suite PRIVATE mpaland-printf)
	add_test(
		NAME ${PROJECT_NAME}.${tgt}
		COMMAND ${tgt} # ${TEST_RUNNER_PARAMS}
	)
endforeach()

if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
	target_compile_options(test_suite PRIVATE /W4)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR 
        CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
	# lots of warnings and all warnings as errors
	target_compile_options(test_suite PRIVATE
        -g
		-Wall
		-Wextra
		-pedantic
		-Wundef
		-Wsign-conversion
		-Wuninitialized
		-Wshadow
		-Wunreachable-code
		-Wswitch-default
		-Wswitch
		-Wcast-align
		-Wmissing-include-dirs
		-Winit-self
		-Wdouble-promotion
		-gdwarf-2
		-fno-exceptions
		-ffunction-sections
		-fdata-sections
		-fverbose-asm
		-Wunused-parameter
	)
	if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
		target_compile_options(test_suite PRIVATE -ffat-lto-objects)
	endif()
endif()