macro(exclude_from_default target_)
    set_target_properties(${target_} PROPERTIES EXCLUDE_FROM_ALL ON)
    set_target_properties(${target_} PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD ON)
endmacro()

macro(exclude_if_included target_)
    get_directory_property(has_parent PARENT_DIRECTORY)
    if(has_parent)
        exclude_from_default(${target_})
    endif()
endmacro()

find_package(Git)

function(git_branch branch_val)
    if(NOT GIT_FOUND)
        return()
    endif()
    set(_branch "")
    execute_process(
        COMMAND ${GIT_EXECUTABLE} "rev-parse" "--abbrev-ref" "HEAD"
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
        RESULT_VARIABLE _git_exit_code
        OUTPUT_VARIABLE _temp_branch
        OUTPUT_STRIP_TRAILING_WHITESPACE
        ERROR_QUIET
    )
    if(_git_exit_code EQUAL 0)
        set(_branch ${_temp_branch})
    endif()
    set(${branch_val} "${_branch}" PARENT_SCOPE)
endfunction()