kc3-lang/gnulib

2011-03-20T12:51:49

socklen: do not depend on sys_socket While trying to modify Emacs to use gnulib's socklen module, I discovered a circular dependency: socklen depends on sys_socket and vice versa. Emacs can use socklen, but it does not need sys_socket because it has its own substitute for sys/socket.h. * m4/socklen.m4 (gl_SOCKET_HEADERS): New macro, extracted from gl_TYPE_SOCKLEN_T. (gl_CHECK_SOCKET_HEADERS): New macro, taken from parts of gl_PREREQ_SYS_H_SOCKET. (gl_TYPE_SOCKLEN_T): Require it instead of requiring gl_PREREQ_SYS_H_SOCKET. * m4/sys_socket_h.m4 (gl_PREREQ_SYS_H_SOCKET): Require gl_CHECK_SOCKET_HEADERS instead of doing its work ourselves. * modules/socklen (Depends-on): Do not depend on sys_socket. (Include): Adjust to match the code used in gl_SOCKET_HEADERS.