Cannot link standard libraries in native build

[danielpieczko]

Applications using lib_xcore_math can be built for the native host instead of xcore, and in that case they need to link with the -lm option. We don't have a way to specify that through the LIB_COMPILER_FLAGS option or similar. There is a workaround, which is something like this in lib_build_info.cmake:

...
XMOS_REGISTER_MODULE()

if(BUILD_NATIVE)
    foreach(target ${APP_BUILD_TARGETS})
        target_link_libraries(${target} PRIVATE m)
    endforeach()
endif()