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-rw-r--r--m4/sys_socket_h.m423
1 files changed, 23 insertions, 0 deletions
diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4
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+++ b/m4/sys_socket_h.m4
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+# sys_socket_h.m4 serial 2
+dnl Copyright (C) 2005, 2006 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_CHECK_HEADERS_ONCE([sys/socket.h])
+ if test $ac_cv_header_sys_socket_h = yes; then
+ SYS_SOCKET_H=''
+ else
+ 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 ws2tcpip.h])
+ SYS_SOCKET_H='sys/socket.h'
+ fi
+ AC_SUBST(SYS_SOCKET_H)
+])