option(SLIC3R_ENC_CHECK "Verify encoding of source files" 1)

if (SLIC3R_ENC_CHECK)
    add_executable(encoding-check encoding-check.cpp)

    # A global no-op target which depends on all encodings checks,
    # and on which in turn all checked targets depend.
    # This is done to make encoding checks the first thing to be
    # performed before actually compiling any sources of the checked targets
    # to make the check fail as early as possible.
    add_custom_target(global-encoding-check
        ALL
        DEPENDS encoding-check
    )
endif()

# Function that adds source file encoding check to a target
# using the above encoding-check binary

function(encoding_check TARGET)
    if (SLIC3R_ENC_CHECK)
        # Obtain target source files
        get_target_property(T_SOURCES ${TARGET} SOURCES)

        # Define top-level encoding check target for this ${TARGET}
        add_custom_target(encoding-check-${TARGET}
            DEPENDS encoding-check ${T_SOURCES}
            COMMENT "Checking source files encodings for target ${TARGET}"
        )

        # Add checking of each source file as a subcommand of encoding-check-${TARGET}
        foreach(file ${T_SOURCES})
            add_custom_command(TARGET encoding-check-${TARGET}
                COMMAND $<TARGET_FILE:encoding-check> ${TARGET} ${file}
                WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
            )
        endforeach()

        # This adds dependency on encoding-check-${TARGET} to ${TARET}
        # via the global-encoding-check
        add_dependencies(global-encoding-check encoding-check-${TARGET})
        add_dependencies(${TARGET} global-encoding-check)
    endif()
endfunction()