1@set RTT_CC=gcc 2@set RTT_EXEC_PATH=%cd%\tools\arm-linux-musleabi_for_i686-w64-mingw32\bin 3@set RTT_CC_PREFIX=arm-linux-musleabi- 4@set PATH=%RTT_EXEC_PATH%;%ENV_ROOT%\tools\gnu_gcc\arm_gcc\mingw\bin;%PATH% 5