| # sys_socket_h.m4 serial 25 |
| dnl Copyright (C) 2005-2021 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_CANONICAL_HOST]) |
| |
| dnl On OSF/1, the functions recv(), send(), recvfrom(), sendto() have |
| dnl old-style declarations (with return type 'int' instead of 'ssize_t') |
| dnl unless _POSIX_PII_SOCKET is defined. |
| case "$host_os" in |
| osf*) |
| AC_DEFINE([_POSIX_PII_SOCKET], [1], |
| [Define to 1 in order to get the POSIX compatible declarations |
| of socket functions.]) |
| ;; |
| esac |
| |
| 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 |
| 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 |
| fi |
| # We need to check for ws2tcpip.h now. |
| gl_PREREQ_SYS_H_SOCKET |
| AC_CHECK_TYPES([struct sockaddr_storage, sa_family_t],,,[ |
| /* sys/types.h is not needed according to POSIX, but the |
| sys/socket.h in i386-unknown-freebsd4.10 and |
| powerpc-apple-darwin5.5 required it. */ |
| #include <sys/types.h> |
| #ifdef HAVE_SYS_SOCKET_H |
| #include <sys/socket.h> |
| #endif |
| #ifdef HAVE_WS2TCPIP_H |
| #include <ws2tcpip.h> |
| #endif |
| ]) |
| if test $ac_cv_type_struct_sockaddr_storage = no; then |
| HAVE_STRUCT_SOCKADDR_STORAGE=0 |
| fi |
| if test $ac_cv_type_sa_family_t = no; then |
| HAVE_SA_FAMILY_T=0 |
| fi |
| if test $ac_cv_type_struct_sockaddr_storage != no; then |
| AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family], |
| [], |
| [HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=0], |
| [#include <sys/types.h> |
| #ifdef HAVE_SYS_SOCKET_H |
| #include <sys/socket.h> |
| #endif |
| #ifdef HAVE_WS2TCPIP_H |
| #include <ws2tcpip.h> |
| #endif |
| ]) |
| fi |
| if test $HAVE_STRUCT_SOCKADDR_STORAGE = 0 || test $HAVE_SA_FAMILY_T = 0 \ |
| || test $HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = 0; then |
| SYS_SOCKET_H='sys/socket.h' |
| fi |
| gl_PREREQ_SYS_H_WINSOCK2 |
| |
| dnl Check for declarations of anything we want to poison if the |
| dnl corresponding gnulib module is not in use. |
| gl_WARN_ON_USE_PREPARE([[ |
| /* Some systems require prerequisite headers. */ |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| ]], [socket connect accept bind getpeername getsockname getsockopt |
| listen recv send recvfrom sendto setsockopt shutdown accept4]) |
| |
| AC_REQUIRE([AC_C_RESTRICT]) |
| ]) |
| |
| AC_DEFUN([gl_PREREQ_SYS_H_SOCKET], |
| [ |
| dnl Check prerequisites of the <sys/socket.h> replacement. |
| AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) |
| gl_CHECK_NEXT_HEADERS([sys/socket.h]) |
| if test $ac_cv_header_sys_socket_h = yes; then |
| HAVE_SYS_SOCKET_H=1 |
| else |
| HAVE_SYS_SOCKET_H=0 |
| fi |
| AC_SUBST([HAVE_SYS_SOCKET_H]) |
| gl_PREREQ_SYS_H_WS2TCPIP |
| ]) |
| |
| # Common prerequisites 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]) |
| ]) |
| |
| # Common prerequisites of the <sys/socket.h> replacement and of the |
| # <arpa/inet.h> replacement. |
| # Sets and substitutes HAVE_WS2TCPIP_H. |
| AC_DEFUN([gl_PREREQ_SYS_H_WS2TCPIP], |
| [ |
| AC_REQUIRE([gl_CHECK_SOCKET_HEADERS]) |
| if test $ac_cv_header_sys_socket_h = yes; then |
| HAVE_WS2TCPIP_H=0 |
| else |
| if test $ac_cv_header_ws2tcpip_h = yes; then |
| HAVE_WS2TCPIP_H=1 |
| else |
| HAVE_WS2TCPIP_H=0 |
| fi |
| fi |
| AC_SUBST([HAVE_WS2TCPIP_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]) |
| gl_MODULE_INDICATOR_SET_VARIABLE([$1]) |
| dnl Define it also as a C macro, for the benefit of the unit tests. |
| gl_MODULE_INDICATOR_FOR_TESTS([$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]) |
| GNULIB_ACCEPT4=0; AC_SUBST([GNULIB_ACCEPT4]) |
| HAVE_STRUCT_SOCKADDR_STORAGE=1; AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE]) |
| HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY=1; |
| AC_SUBST([HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY]) |
| HAVE_SA_FAMILY_T=1; AC_SUBST([HAVE_SA_FAMILY_T]) |
| HAVE_ACCEPT4=1; AC_SUBST([HAVE_ACCEPT4]) |
| ]) |