Configure error: no platform net file

[owenustc]

I git nginx-grids, but meet the configuration error. And I found there is not net.xx file in my nginx-gridfs/mongo-c-driver/src/. I also no found this direct dir, named platfom in git code. Could anyone help me?

hecking for struct dirent.d_namlen ... not found
checking for struct dirent.d_type ... found
checking for sysconf(_SC_NPROCESSORS_ONLN) ... found
checking for sysconf(_SC_LEVEL1_DCACHE_LINESIZE) ... found
checking for openat(), fstatat() ... found
checking for getaddrinfo() ... found
configuring additional modules
adding module in /home/owen/nginx-gridfs
/bin/cp: cannot stat '/home/owen/nginx-gridfs/mongo-c-driver/src/platform/linux/net.*': No such file or directory

• ngx_http_gridfs_module was configured
  checking for PCRE library ... found
  checking for PCRE JIT support ... found
  checking for zlib library ... found
  creating objs/Makefile