最近遇到一个编译问题，两个ubuntu机器，kernel 版本稍有区别。结果同一套gcc 编译器， 一台电脑没问题，另一台报如下错误：
aarch64-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory
后下载最新gcc-linaro-7.4.1-2019.02-x86_64_aarch64-elf.tar.xz工具终于ok。
https://www.linaro.org/downloads/
Latest Linux Targeted Binary Toolchain Releases
| arm-linux-gnueabihf | 32-bit Armv7 Cortex-A, hard-float, little-endian | Release-Notes | Binaries | Source |
| armv8l-linux-gnueabihf | 32-bit Armv8 Cortex-A, hard-float, little-endian | Release-Notes | Binaries | Source |
| aarch64-linux-gnu | 64-bit Armv8 Cortex-A, little-endian | Release-Notes | Binaries | Source |
Latest Bare-Metal Targeted Binary Toolchain Releases
| arm-eabi | 32-bit Armv7 Cortex-A, soft-float, little-endian | Release-Notes | Binaries | Source |
| aarch64-elf | 64-bit Armv8 Cortex-A, little-endian | Release-Notes | Binaries | Source |