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# sys_socket_h.m4 serial 12
dnl Copyright (C) 2005-2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Simon Josefsson.
AC_DEFUN([gl_HEADER_SYS_SOCKET],
[
AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
AC_REQUIRE([AC_C_INLINE])
AC_CACHE_CHECK([whether <sys/socket.h> is self-contained],
[gl_cv_header_sys_socket_h_selfcontained],
[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])],
[gl_cv_header_sys_socket_h_selfcontained=yes],
[gl_cv_header_sys_socket_h_selfcontained=no])
])
if test $gl_cv_header_sys_socket_h_selfcontained = yes; then
SYS_SOCKET_H=''
dnl If the shutdown function exists, <sys/socket.h> should define
dnl SHUT_RD, SHUT_WR, SHUT_RDWR.
AC_CHECK_FUNCS([shutdown])
if test $ac_cv_func_shutdown = yes; then
AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros],
[gl_cv_header_sys_socket_h_shut],
[
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])],
[gl_cv_header_sys_socket_h_shut=yes],
[gl_cv_header_sys_socket_h_shut=no])
])
if test $gl_cv_header_sys_socket_h_shut = no; then
SYS_SOCKET_H='sys/socket.h'
fi
fi
else
SYS_SOCKET_H='sys/socket.h'
fi
if test -n "$SYS_SOCKET_H"; then
dnl Check prerequisites of the <sys/socket.h> replacement.
gl_CHECK_NEXT_HEADERS([sys/socket.h])
if test $ac_cv_header_sys_socket_h = yes; then
HAVE_SYS_SOCKET_H=1
HAVE_WS2TCPIP_H=0
else
HAVE_SYS_SOCKET_H=0
dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
dnl the check for those headers unconditional; yet cygwin reports
dnl that the headers are present but cannot be compiled (since on
dnl cygwin, all socket information should come from sys/socket.h).
AC_CHECK_HEADERS([ws2tcpip.h])
if test $ac_cv_header_ws2tcpip_h = yes; then
HAVE_WS2TCPIP_H=1
else
HAVE_WS2TCPIP_H=0
fi
fi
gl_PREREQ_SYS_H_WINSOCK2
AC_SUBST([HAVE_SYS_SOCKET_H])
AC_SUBST([HAVE_WS2TCPIP_H])
fi
AC_SUBST([SYS_SOCKET_H])
])
# Common prerequisites of of the <sys/socket.h> replacement and of the
# <sys/select.h> replacement.
# Sets and substitutes HAVE_WINSOCK2_H.
AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2],
[
m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])])
m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])])
AC_CHECK_HEADERS_ONCE([sys/socket.h])
if test $ac_cv_header_sys_socket_h != yes; then
dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make
dnl the check for those headers unconditional; yet cygwin reports
dnl that the headers are present but cannot be compiled (since on
dnl cygwin, all socket information should come from sys/socket.h).
AC_CHECK_HEADERS([winsock2.h])
fi
if test "$ac_cv_header_winsock2_h" = yes; then
HAVE_WINSOCK2_H=1
UNISTD_H_HAVE_WINSOCK2_H=1
SYS_IOCTL_H_HAVE_WINSOCK2_H=1
else
HAVE_WINSOCK2_H=0
fi
AC_SUBST([HAVE_WINSOCK2_H])
])
AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS])
GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
])
AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS],
[
GNULIB_SOCKET=0; AC_SUBST([GNULIB_SOCKET])
GNULIB_CONNECT=0; AC_SUBST([GNULIB_CONNECT])
GNULIB_ACCEPT=0; AC_SUBST([GNULIB_ACCEPT])
GNULIB_BIND=0; AC_SUBST([GNULIB_BIND])
GNULIB_GETPEERNAME=0; AC_SUBST([GNULIB_GETPEERNAME])
GNULIB_GETSOCKNAME=0; AC_SUBST([GNULIB_GETSOCKNAME])
GNULIB_GETSOCKOPT=0; AC_SUBST([GNULIB_GETSOCKOPT])
GNULIB_LISTEN=0; AC_SUBST([GNULIB_LISTEN])
GNULIB_RECV=0; AC_SUBST([GNULIB_RECV])
GNULIB_SEND=0; AC_SUBST([GNULIB_SEND])
GNULIB_RECVFROM=0; AC_SUBST([GNULIB_RECVFROM])
GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO])
GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT])
GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN])
])
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