diff options
Diffstat (limited to 'gl/m4/socklen.m4')
| -rw-r--r-- | gl/m4/socklen.m4 | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/gl/m4/socklen.m4 b/gl/m4/socklen.m4 index 2933d4b8..e3efd6ef 100644 --- a/gl/m4/socklen.m4 +++ b/gl/m4/socklen.m4 @@ -1,5 +1,5 @@ -# socklen.m4 serial 7 -dnl Copyright (C) 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc. +# socklen.m4 serial 10 +dnl Copyright (C) 2005-2007, 2009-2013 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. @@ -8,15 +8,12 @@ dnl From Albert Chin, Windows fixes from Simon Josefsson. dnl Check for socklen_t: historically on BSD it is an int, and in dnl POSIX 1g it is a type of its own, but some platforms use different -dnl types for the argument to getsockopt, getpeername, etc. So we -dnl have to test to find something that will work. +dnl types for the argument to getsockopt, getpeername, etc.: +dnl HP-UX 10.20, IRIX 6.5, OSF/1 4.0, Interix 3.5, BeOS. +dnl So we have to test to find something that will work. -dnl On mingw32, socklen_t is in ws2tcpip.h ('int'), so we try to find -dnl it there first. That file is included by gnulib's sys_socket.in.h, which -dnl all users of this module should include. Cygwin must not include -dnl ws2tcpip.h. AC_DEFUN([gl_TYPE_SOCKLEN_T], - [AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl + [AC_REQUIRE([gl_CHECK_SOCKET_HEADERS])dnl AC_CHECK_TYPE([socklen_t], , [AC_MSG_CHECKING([for socklen_t equivalent]) AC_CACHE_VAL([gl_cv_socklen_t_equiv], @@ -44,9 +41,37 @@ AC_DEFUN([gl_TYPE_SOCKLEN_T], AC_MSG_RESULT([$gl_cv_socklen_t_equiv]) AC_DEFINE_UNQUOTED([socklen_t], [$gl_cv_socklen_t_equiv], [type to use in place of socklen_t if not defined])], - [#include <sys/types.h> - #if HAVE_SYS_SOCKET_H - # include <sys/socket.h> - #elif HAVE_WS2TCPIP_H - # include <ws2tcpip.h> - #endif])]) + [gl_SOCKET_HEADERS])]) + +dnl On mingw32, socklen_t is in ws2tcpip.h ('int'), so we try to find +dnl it there too. But on Cygwin, wc2tcpip.h must not be included. Users +dnl of this module should use the same include pattern as gl_SOCKET_HEADERS. +dnl When you change this macro, keep also in sync: +dnl - gl_CHECK_SOCKET_HEADERS, +dnl - the Include section of modules/socklen. +AC_DEFUN([gl_SOCKET_HEADERS], +[ +/* <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> +#if HAVE_SYS_SOCKET_H +# include <sys/socket.h> +#elif HAVE_WS2TCPIP_H +# include <ws2tcpip.h> +#endif +]) + +dnl Tests for the existence of the header for socket facilities. +dnl Defines the C macros HAVE_SYS_SOCKET_H, HAVE_WS2TCPIP_H. +dnl This macro must match gl_SOCKET_HEADERS. +AC_DEFUN([gl_CHECK_SOCKET_HEADERS], + [AC_CHECK_HEADERS_ONCE([sys/socket.h]) + if test $ac_cv_header_sys_socket_h = no; 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([ws2tcpip.h]) + fi + ]) |