我正在尝试使用外部Linaro工具链来编译Yocto图像。
但是，我的食谱之一需要aarch64-linux-gnu-binutils，但失败了。
看到错误时，似乎有aarch64-linux-gnu-binutils可用，但未启用。
如何启用或设置EAT_VER_MAIN或ELT_VER_MAIN
binutils-cross-aarch64 PROVIDES virtual/aarch64-linux-gnu-binutils but was skipped: PREFERRED_PROVIDER_virtual/aarch64-linux-gnu-binutils set to external-linaro-toolchain, not binutils-cross-aarch64
external-arm-toolchain PROVIDES virtual/aarch64-linux-gnu-binutils but was skipped: External ARM toolchain not configured (EAT_VER_MAIN not set).
external-linaro-toolchain PROVIDES virtual/aarch64-linux-gnu-binutils but was skipped: External Linaro toolchain not configured (ELT_VER_MAIN not set).```