1*4882a593SmuzhiyunBR2_nios2=y 2*4882a593SmuzhiyunBR2_TOOLCHAIN_EXTERNAL=y 3*4882a593SmuzhiyunBR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y 4*4882a593SmuzhiyunBR2_TOOLCHAIN_EXTERNAL_BOOTLIN_NIOS2_GLIBC_STABLE=y 5