set(ENV_COMMAND export)
set(ENV_SEP ":")
set(DEPOTTOOLS_PATH ${CMAKE_SOURCE_DIR}/Dependencies/depot_tools)

if(WIN32)
    set(ENV_COMMAND set)
    set(ENV_SEP ";")
    set(DEPOTTOOLS_PATH "${DEPOTTOOLS_PATH};${DEPOTTOOLS_PATH}/python276_bin;")
endif(WIN32)

macro(add_libwebrtc_command
        ARG_NAME
        ARG_OUTPUT
        ARG_COMMAND
        ARG_WORKING_DIRECTORY
        ARG_COMMENT
)
    set(ARG_DEPENDENCIES ${ARGN})

    add_custom_command(
            OUTPUT  ${ARG_OUTPUT}
            COMMAND ${ENV_COMMAND} "DEPOT_TOOLS_WIN_TOOLCHAIN=0"
            COMMAND ${ENV_COMMAND} "PATH=${DEPOTTOOLS_PATH}${ENV_SEP}$ENV{PATH}"
            COMMAND ${ARG_COMMAND}
            WORKING_DIRECTORY ${ARG_WORKING_DIRECTORY}
            COMMENT ${ARG_COMMENT}
    )

    add_custom_target(
            ${ARG_NAME} ALL
            DEPENDS ${ARG_OUTPUT}
    )

    list(LENGTH ARG_DEPENDENCIES NUM_ARG_DEPENDENCIES)
    if (${NUM_ARG_DEPENDENCIES} GREATER 0)
        add_dependencies(${ARG_NAME} ${ARG_DEPENDENCIES})
    endif ()
endmacro()