1@set RTT_CC=gcc 2@set RTT_EXEC_PATH=%cd%\tools\aarch64-linux-musleabi_for_i686-w64-mingw32\bin 3@set RTT_CC_PREFIX=aarch64-linux-musleabi- 4@set PATH=%RTT_EXEC_PATH%;%ENV_ROOT%\tools\gun_gcc\arm_gcc\mingw\bin;%PATH%