cmake_minimum_required(VERSION 3.13) option(JSON_Valgrind "Execute test suite with Valgrind." OFF) option(JSON_FastTests "Skip expensive/slow tests." OFF) set(JSON_TestStandards "" CACHE STRING "The list of standards to test explicitly.") include(test) ############################################################################# # override standard support ############################################################################# # Clang only supports C++17 starting from Clang 5.0 if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0) unset(compiler_supports_cpp_17) endif() # MSVC 2015 (14.0) does not support C++17 if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.1) unset(compiler_supports_cpp_17) endif() # Clang C++20 support appears insufficient prior to Clang 9.0 (based on CI build failure) if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0) unset(compiler_supports_cpp_20) endif() # GCC started supporting C++20 features in 8.0 but a test for #3070 segfaults prior to 9.0 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0) unset(compiler_supports_cpp_20) endif() ############################################################################# # test_main library with shared code to speed up build and common settings ############################################################################# add_library(test_main OBJECT src/unit.cpp) target_compile_definitions(test_main PUBLIC DOCTEST_CONFIG_SUPER_FAST_ASSERTS JSON_TEST_KEEP_MACROS ) target_compile_features(test_main PRIVATE cxx_std_11) target_compile_options(test_main PUBLIC $<$:/EHsc;$<$:/Od>> # MSVC: Force to always compile with W4 # Disable warning C4566: character represented by universal-character-name '\uFF01' # cannot be represented in the current code page (1252) # Disable warning C4996: 'nlohmann::basic_json<...>::operator <<': was declared deprecated $<$:/W4 /wd4566 /wd4996> # https://github.com/nlohmann/json/issues/1114 $<$:/bigobj> $<$:-Wa,-mbig-obj> # https://github.com/nlohmann/json/pull/3229 $<$:-diag-disable=2196> $<$>:-Wno-deprecated;-Wno-float-equal> $<$:-Wno-deprecated-declarations> $<$:-diag-disable=1786> ) target_include_directories(test_main PUBLIC thirdparty/doctest thirdparty/fifo_map ${PROJECT_BINARY_DIR}/include ) target_link_libraries(test_main PUBLIC ${NLOHMANN_JSON_TARGET_NAME}) ############################################################################# # define test- and standard-specific build settings ############################################################################# if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0 AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0 AND NOT MINGW) # fix for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90050 json_test_set_test_options(all CXX_STANDARDS 17 LINK_LIBRARIES stdc++fs) endif() if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") # avoid stack overflow, see https://github.com/nlohmann/json/issues/2955 json_test_set_test_options("test-cbor;test-msgpack;test-ubjson;test-bjdata;test-binary_formats" LINK_OPTIONS /STACK:4000000) endif() # disable exceptions for test-disabled_exceptions json_test_set_test_options(test-disabled_exceptions COMPILE_DEFINITIONS JSON_NOEXCEPTION) if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU") json_test_set_test_options(test-disabled_exceptions COMPILE_OPTIONS -fno-exceptions) elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") # disabled due to https://github.com/nlohmann/json/discussions/2824 #json_test_set_test_options(test-disabled_exceptions COMPILE_DEFINITIONS _HAS_EXCEPTIONS=0 COMPILE_OPTIONS /EH) endif() ############################################################################# # add unit tests ############################################################################# if("${JSON_TestStandards}" STREQUAL "") set(test_cxx_standards 11 14 17 20 23) unset(test_force) else() set(test_cxx_standards ${JSON_TestStandards}) set(test_force FORCE) endif() # Print selected standards marking unavailable ones with brackets set(msg_standards "") foreach(cxx_standard ${test_cxx_standards}) if(compiler_supports_cpp_${cxx_standard}) list(APPEND msg_standards ${cxx_standard}) else() list(APPEND msg_standards [${cxx_standard}]) endif() endforeach() string(JOIN " " msg_standards ${msg_standards}) set(msg "Testing standards: ${msg_standards}") if(test_force) string(APPEND msg " (forced)") endif() message(STATUS "${msg}") # *DO* use json_test_set_test_options() above this line file(GLOB files src/unit-*.cpp) foreach(file ${files}) json_test_add_test_for(${file} MAIN test_main CXX_STANDARDS ${test_cxx_standards} ${test_force}) endforeach() # *DO NOT* use json_test_set_test_options() below this line ############################################################################# # Test the generated build configs ############################################################################# # these tests depend on the generated file nlohmann_jsonConfig.cmake if (JSON_Install) add_subdirectory(cmake_import) add_subdirectory(cmake_import_minver) endif() add_subdirectory(cmake_add_subdirectory) add_subdirectory(cmake_fetch_content) add_subdirectory(cmake_fetch_content2) add_subdirectory(cmake_target_include_directories)