cmake $<1> examples

godotengine/godot-cpp cmake/godotcpp.cmake :323

string(
        CONCAT
        GODOTCPP_SUFFIX_GENEX
        "$<1:${SYSTEM_NAME}>"
        "$<1:.${GODOTCPP_TARGET}>"
        "$<${IS_DEV_BUILD}:.dev>"
        "$<$<STREQUAL:${GODOTCPP_PRECISION},double>:.double>"
        "$<1:.${ARCH_NAME}>"
        # TODO IOS_SIMULATOR
        "$<$<NOT:${THREADS_ENABLED}>:.nothreads>"
    )

KiCad/kicad-source-mirror thirdparty/pybind11/tests/CMakeLists.txt :582

set_target_properties(mod_per_interpreter_gil PROPERTIES LIBRARY_OUTPUT_DIRECTORY
                                                           "$<1:${CMAKE_CURRENT_BINARY_DIR}>")