Shamelessly copy Josiah

source/lib/json/tests/abi/CMakeLists.txt

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+# common build settings
+add_library(abi_compat_common INTERFACE)
+target_compile_definitions(abi_compat_common INTERFACE
+    DOCTEST_CONFIG_SUPER_FAST_ASSERTS
+    JSON_TEST_KEEP_MACROS)
+target_compile_features(abi_compat_common INTERFACE cxx_std_11)
+target_compile_options(abi_compat_common INTERFACE
+    $<$<CXX_COMPILER_ID:MSVC>:/EHsc;$<$<CONFIG:Release>:/Od>>
+    # MSVC: Force to always compile with W4
+    $<$<CXX_COMPILER_ID:MSVC>:/W4>
+
+    # https://github.com/nlohmann/json/pull/3229
+    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=2196>
+
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
+    $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
+    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=1786>)
+target_include_directories(abi_compat_common SYSTEM INTERFACE
+    ../thirdparty/doctest
+    include)
+target_link_libraries(abi_compat_common INTERFACE ${NLOHMANN_JSON_TARGET_NAME})
+
+# shared main()
+add_library(abi_compat_main STATIC main.cpp)
+target_link_libraries(abi_compat_main PUBLIC abi_compat_common)
+
+# add individual tests
+add_subdirectory(config)
+add_subdirectory(diag)
+add_subdirectory(inline_ns)