环境:
$ gcc --version
gcc (GCC) 10.2.0
Copyright (c) 2020 Free Software Foundation, Inc.
$ cat /proc/version
CYGWIN_NT-10.0-17763 version 3.2.0-340.x86_64 (corinna@calimero) (gcc version 9.3.0 20200312 (Fedora Cygwin 9.3.0-1) (GCC) ) 2021-03-29 08:42 UTC
建议修改如下
#ifdef PATH_MAX
#undef PATH_MAX
#endif