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176 lines
6.1 KiB
176 lines
6.1 KiB
# sys_socket_h.m4 serial 23 |
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dnl Copyright (C) 2005-2017 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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|
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dnl From Simon Josefsson. |
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AC_DEFUN([gl_HEADER_SYS_SOCKET], |
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[ |
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AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) |
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AC_REQUIRE([AC_CANONICAL_HOST]) |
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dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have |
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dnl old-style declarations (with return type 'int' instead of 'ssize_t') |
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dnl unless _POSIX_PII_SOCKET is defined. |
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case "$host_os" in |
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osf*) |
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AC_DEFINE([_POSIX_PII_SOCKET], [1], |
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[Define to 1 in order to get the POSIX compatible declarations |
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of socket functions.]) |
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;; |
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esac |
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AC_CACHE_CHECK([whether <sys/socket.h> is self-contained], |
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[gl_cv_header_sys_socket_h_selfcontained], |
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[ |
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]], [[]])], |
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[gl_cv_header_sys_socket_h_selfcontained=yes], |
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[gl_cv_header_sys_socket_h_selfcontained=no]) |
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]) |
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if test $gl_cv_header_sys_socket_h_selfcontained = yes; then |
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dnl If the shutdown function exists, <sys/socket.h> should define |
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dnl SHUT_RD, SHUT_WR, SHUT_RDWR. |
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AC_CHECK_FUNCS([shutdown]) |
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if test $ac_cv_func_shutdown = yes; then |
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AC_CACHE_CHECK([whether <sys/socket.h> defines the SHUT_* macros], |
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[gl_cv_header_sys_socket_h_shut], |
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[ |
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AC_COMPILE_IFELSE( |
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[AC_LANG_PROGRAM([[#include <sys/socket.h>]], |
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[[int a[] = { SHUT_RD, SHUT_WR, SHUT_RDWR };]])], |
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[gl_cv_header_sys_socket_h_shut=yes], |
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[gl_cv_header_sys_socket_h_shut=no]) |
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]) |
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if test $gl_cv_header_sys_socket_h_shut = no; then |
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SYS_SOCKET_H='sys/socket.h' |
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fi |
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fi |
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fi |
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# We need to check for ws2tcpip.h now. |
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gl_PREREQ_SYS_H_SOCKET |
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AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[ |
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/* sys/types.h is not needed according to POSIX, but the |
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sys/socket.h in i386-unknown-freebsd4.10 and |
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powerpc-apple-darwin5.5 required it. */ |
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#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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]) |
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if test $ac_cv_type_struct_sockaddr_storage = no; then |
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HAVE_STRUCT_SOCKADDR_STORAGE=0 |
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fi |
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if test $ac_cv_type_sa_family_t = no; then |
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HAVE_SA_FAMILY_T=0 |
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fi |
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if test $ac_cv_type_struct_sockaddr_storage != no; then |
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AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family], |
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[], |
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[HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0], |
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[#include <sys/types.h> |
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#ifdef HAVE_SYS_SOCKET_H |
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#include <sys/socket.h> |
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#endif |
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#ifdef HAVE_WS2TCPIP_H |
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#include <ws2tcpip.h> |
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#endif |
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]) |
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fi |
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if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \ |
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|| test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then |
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SYS_SOCKET_H='sys/socket.h' |
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fi |
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gl_PREREQ_SYS_H_WINSOCK2 |
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dnl Check for declarations of anything we want to poison if the |
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dnl corresponding gnulib module is not in use. |
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gl_WARN_ON_USE_PREPARE([[ |
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/* Some systems require prerequisite headers. */ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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]], [socket connect accept bind getpeername getsockname getsockopt |
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listen recv send recvfrom sendto setsockopt shutdown accept4]) |
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]) |
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AC_DEFUN([gl_PREREQ_SYS_H_SOCKET], |
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[ |
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dnl Check prerequisites of the <sys/socket.h> replacement. |
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AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) |
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gl_CHECK_NEXT_HEADERS([sys/socket.h]) |
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if test $ac_cv_header_sys_socket_h = yes; then |
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HAVE_SYS_SOCKET_H=1 |
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HAVE_WS2TCPIP_H=0 |
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else |
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HAVE_SYS_SOCKET_H=0 |
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if test $ac_cv_header_ws2tcpip_h = yes; then |
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HAVE_WS2TCPIP_H=1 |
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else |
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HAVE_WS2TCPIP_H=0 |
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fi |
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fi |
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AC_SUBST([HAVE_SYS_SOCKET_H]) |
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AC_SUBST([HAVE_WS2TCPIP_H]) |
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]) |
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# Common prerequisites of the <sys/socket.h> replacement and of the |
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# <sys/select.h> replacement. |
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# Sets and substitutes HAVE_WINSOCK2_H. |
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AC_DEFUN([gl_PREREQ_SYS_H_WINSOCK2], |
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[ |
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m4_ifdef([gl_UNISTD_H_DEFAULTS], [AC_REQUIRE([gl_UNISTD_H_DEFAULTS])]) |
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m4_ifdef([gl_SYS_IOCTL_H_DEFAULTS], [AC_REQUIRE([gl_SYS_IOCTL_H_DEFAULTS])]) |
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AC_CHECK_HEADERS_ONCE([sys/socket.h]) |
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if test $ac_cv_header_sys_socket_h != yes; then |
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dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make |
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dnl the check for those headers unconditional; yet cygwin reports |
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dnl that the headers are present but cannot be compiled (since on |
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dnl cygwin, all socket information should come from sys/socket.h). |
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AC_CHECK_HEADERS([winsock2.h]) |
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fi |
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if test "$ac_cv_header_winsock2_h" = yes; then |
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HAVE_WINSOCK2_H=1 |
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UNISTD_H_HAVE_WINSOCK2_H=1 |
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SYS_IOCTL_H_HAVE_WINSOCK2_H=1 |
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else |
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HAVE_WINSOCK2_H=0 |
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fi |
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AC_SUBST([HAVE_WINSOCK2_H]) |
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]) |
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AC_DEFUN([gl_SYS_SOCKET_MODULE_INDICATOR], |
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[ |
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dnl Use AC_REQUIRE here, so that the default settings are expanded once only. |
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AC_REQUIRE([gl_SYS_SOCKET_H_DEFAULTS]) |
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gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
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dnl Define it also as a C macro, for the benefit of the unit tests. |
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gl_MODULE_INDICATOR_FOR_TESTS([$1]) |
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]) |
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AC_DEFUN([gl_SYS_SOCKET_H_DEFAULTS], |
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[ |
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GNULIB_SOCKET=0; AC_SUBST([GNULIB_SOCKET]) |
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GNULIB_CONNECT=0; AC_SUBST([GNULIB_CONNECT]) |
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GNULIB_ACCEPT=0; AC_SUBST([GNULIB_ACCEPT]) |
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GNULIB_BIND=0; AC_SUBST([GNULIB_BIND]) |
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GNULIB_GETPEERNAME=0; AC_SUBST([GNULIB_GETPEERNAME]) |
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GNULIB_GETSOCKNAME=0; AC_SUBST([GNULIB_GETSOCKNAME]) |
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GNULIB_GETSOCKOPT=0; AC_SUBST([GNULIB_GETSOCKOPT]) |
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GNULIB_LISTEN=0; AC_SUBST([GNULIB_LISTEN]) |
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GNULIB_RECV=0; AC_SUBST([GNULIB_RECV]) |
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GNULIB_SEND=0; AC_SUBST([GNULIB_SEND]) |
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GNULIB_RECVFROM=0; AC_SUBST([GNULIB_RECVFROM]) |
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GNULIB_SENDTO=0; AC_SUBST([GNULIB_SENDTO]) |
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GNULIB_SETSOCKOPT=0; AC_SUBST([GNULIB_SETSOCKOPT]) |
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GNULIB_SHUTDOWN=0; AC_SUBST([GNULIB_SHUTDOWN]) |
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GNULIB_ACCEPT4=0; AC_SUBST([GNULIB_ACCEPT4]) |
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HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE]) |
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HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1; |
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AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY]) |
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HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T]) |
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HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4]) |
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])
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