https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=061710370c6e02b87f5e366310d41f99ae73e5df
commit 061710370c6e02b87f5e366310d41f99ae73e5df Author: Yaakov Selkowitz <yselk...@redhat.com> Date: Mon Jan 15 21:19:59 2018 -0600 cygwin: make <sys/socket.h> completely visible from <netinet/in.h> While POSIX mandates that certain socket types shall be defined by the inclusing of <netinet/in.h>, it also says that this header may also make visible all <sys/socket.h> symbols. Glibc does this, and without out it, some packages end up requiring an additional #include <sys/socket.h>. Signed-off-by: Yaakov Selkowitz <yselk...@redhat.com> Diff: --- winsup/cygwin/include/cygwin/in.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/winsup/cygwin/include/cygwin/in.h b/winsup/cygwin/include/cygwin/in.h index 9d7331d..42b7766 100644 --- a/winsup/cygwin/include/cygwin/in.h +++ b/winsup/cygwin/include/cygwin/in.h @@ -18,7 +18,7 @@ #ifndef _CYGWIN_IN_H #define _CYGWIN_IN_H -#include <cygwin/socket.h> +#include <sys/socket.h> #ifndef _IN_ADDR_T_DECLARED typedef __uint32_t in_addr_t;