The current gnulib unistd.in.h file includes the following section:
#if @GNULIB_GETHOSTNAME@
/* Get all possible declarations of gethostname(). */
# if @UNISTD_H_HAVE_WINSOCK2_H@
# if !defined _GL_SYS_SOCKET_H
# undef socket
# define socket socket_used_without_including_sys_socket_h
# undef connect
# define connect connect_used_without_including_sys_socket_h
# undef accept
# define accept accept_used_without_including_sys_socket_h
# undef bind
# define bind bind_used_without_including_sys_socket_h
# undef getpeername
# define getpeername
getpeername_used_without_including_sys_socket_h
# undef getsockname
# define getsockname
getsockname_used_without_including_sys_socket_h
# undef getsockopt
# define getsockopt getsockopt_used_without_including_sys_socket_h
# undef listen
# define listen listen_used_without_including_sys_socket_h
# undef recv
# define recv recv_used_without_including_sys_socket_h
# undef send
# define send send_used_without_including_sys_socket_h
# undef recvfrom
# define recvfrom recvfrom_used_without_including_sys_socket_h
# undef sendto
# define sendto sendto_used_without_including_sys_socket_h
# undef setsockopt
# define setsockopt setsockopt_used_without_including_sys_socket_h
# undef shutdown
# define shutdown shutdown_used_without_including_sys_socket_h
# endif
# if !defined _GL_SYS_SELECT_H
# undef select
# define select select_used_without_including_sys_select_h
# endif
# endif
#endif
I think these definitions can cause trouble for C++ programs that do
things like
foo.h:
-----
class foo {
public:
foo (void) { }
void accept (void);
};
foo.cc:
------
#include <unistd.h>
#include "foo.h"
void foo::accept (void) { }
// Oops, accept is not a member of class foo.
or C programs like this:
foo.h:
-----
extern int accept;
extern void doit (void);
foo.c:
-----
#include <unistd.h>
#include "foo.h"
int accept = 0;
void doit (void) { accept = 1; }
main.c:
------
#include "foo.h"
int main (void) { accept = -1; doit (); return accept; }
/* oops, what happened to the global variable accept? */
jwe
