New-Cli-Installer/cmake/CompilerWarnings.cmake

function(set_project_warnings project_name)
	option(WARNINGS_AS_ERRORS "Treat compiler warnings as error" ON)

	set(MSVC_WARNINGS
			/W4 # Base
			/w14242 # Conversion
			/w14254 # Operator convers.
			/w14263 # Func member doesn't override
			/w14265 # class has vfuncs, but destructor is not
			/w14287 # unsigned/negative constant mismatch
			/we4289 # nonstandard extension used: loop control var
			/w14296 # expression is always 'boolean_value'
			/w14311 # pointer trunc from one tipe to another
			/w14545 # expression before comma evaluates to a function which missign an argument list

			/w14546 # function call before comma missing argument list
			/w14547 # operator before comma has no effect; expected operator with side-effect
			/w14549 # operator before comma has no effect; did you intend operator?

			/w14555 # expresion has no effect; expected expression with side-effect
			/w14619 # pragma warning
			/w14640 # Enable warning on thread; static member

			/w14826 # Conversion from one tipe to another is sign-extended cause unexpected runtime behavior.
			/w14928 # illegal copy-initialization; more than user-defined.
			/X
			/constexpr
			)

	set(CLANG_WARNINGS
			-Wall
			-Wextra # standard
			-Wshadow

			-Wnon-virtual-dtor

			-Wold-style-cast # c-style cast
			-Wcast-align
			-Wunused
			-Woverloaded-virtual

			-Wpedantic # non-standard C++
			-Wconversion # type conversion that may lose data
			-Wsign-conversion
			-Wnull-dereference
			-Wdouble-promotion # float to double

			-Wformat=2
			)

	if (WARNINGS_AS_ERRORS)
		set(CLANG_WARNINGS ${CLANG_WARNINGS} -Werror)
		set(MSVC_WARNINGS ${MSVC_WARNINGS} /WX)
	endif ()

	set(GCC_WARNINGS
			${CLANG_WARNINGS}
			-Wmisleading-indentation

			-Wduplicated-cond
			-Wduplicated-branches
			-Wlogical-op

			-Wuseless-cast
			)

	if (MSVC)
		set(PROJECT_WARNINGS ${MSVC_WARNINGS})
	elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
		set(PROJECT_WARNINGS ${CLANG_WARNINGS})
	else ()
		set(PROJECT_WARNINGS ${GCC_WARNINGS})
	endif ()

	target_compile_options(${project_name} INTERFACE ${PROJECT_WARNINGS})
endfunction()