diff options
Diffstat (limited to 'm4/sys_socket_h.m4')
| -rw-r--r-- | m4/sys_socket_h.m4 | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4 new file mode 100644 index 0000000..ce5acf6 --- /dev/null +++ b/m4/sys_socket_h.m4 @@ -0,0 +1,54 @@ +# sys_socket_h.m4 serial 3 +dnl Copyright (C) 2005, 2006, 2007 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_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 $gl_cv_header_sys_socket_h_selfcontained = yes; then + SYS_SOCKET_H='' + else + SYS_SOCKET_H='sys/socket.h' + + AC_CHECK_HEADERS([sys/socket.h]) + gl_ABSOLUTE_HEADER([sys/socket.h]) + ABSOLUTE_SYS_SOCKET_H=\"$gl_cv_absolute_sys_socket_h\" + AC_SUBST([ABSOLUTE_SYS_SOCKET_H]) + if test $ac_cv_header_sys_socket_h = yes; then + HAVE_SYS_SOCKET_H=1 + HAVE_WINSOCK2_H=0 + 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([winsock2.h ws2tcpip.h]) + if test $ac_cv_header_winsock2_h = yes; then + HAVE_WINSOCK2_H=1 + else + HAVE_WINSOCK2_H=0 + fi + if test $ac_cv_header_ws2tcpip_h = yes; then + HAVE_WS2TCPIP_H=1 + else + HAVE_WS2TCPIP_H=0 + fi + fi + AC_SUBST([HAVE_SYS_SOCKET_H]) + AC_SUBST([HAVE_WINSOCK2_H]) + AC_SUBST([HAVE_WS2TCPIP_H]) + fi + AC_SUBST([SYS_SOCKET_H]) +]) |