ratproxy.c:1635: error: incompatible type for argument 2 of `waitpid'

[GoogleCodeExporter]

I compiled ratproxy using Cygwin following this guideline: 
http://www.butterdev.com/web-security/2008/07/google-ratproxy-web-application-se
curity-audit-tool/
When I ran Make with flag -Wno-pointer-sign removed I got this error
cc ratproxy.c -o ratproxy  -Wall -O3  -D_GNU_SOURCE http.c mime.c ssl.c 
-lcrypto -lssl
ratproxy.c: In function `listen_loop':
ratproxy.c:1635: error: incompatible type for argument 2 of `waitpid'
Makefile:29: recipe for target `ratproxy' failed
make: *** [ratproxy] Error 1

Am I missing any library? 
Thanks

Original issue reported on code.google.com by fanronal...@gmail.com on 15 Feb 2012 at 3:43