下面是对Gcc的内置宏定义的解释:html
https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.htmlc++
https://github.com/gcc-mirror/gcc/blob/master/gcc/config/aarch64/aarch64-c.cgit
下面是导出gcc内置宏定义的方法:github
https://stackoverflow.com/questions/2224334/gcc-dump-preprocessor-definesspa
C:code
gcc -dM -E - < /dev/null
C++:htm
g++ -dM -E -x c++ - < /dev/null