C，删除无用ifdef宏的工具

ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=5575120baf228fa8a319b45294f974979efe29d7, not stripped, too many notes (256) https://mzhan017.blog.csdn.net/article/details/128826587