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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [m4/] [ax_func_which_gethostbyname_r.m4] - Rev 777
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# m4/ax_func_which_gethostbyname_r.m4 # Copyright © 2005 Caolan McNamara <caolan@skynet.ie> # Copyright © 2005 Daniel Richard G. <skunk@iskunk.org> # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. # As a special exception, the respective Autoconf Macro's copyright # owner gives unlimited permission to copy, distribute and modify the # configure scripts that are the output of Autoconf when processing # the Macro. You need not follow the terms of the GNU General Public # License when using or distributing such scripts, even though # portions of the text of the Macro appear in them. The GNU General # Public License (GPL) does govern all other use of the material that # constitutes the Autoconf Macro. # This special exception to the GPL applies to versions of the # Autoconf Macro released by the Autoconf Macro Archive. When you make # and distribute a modified version of the Autoconf Macro, you may # extend this special exception to the GPL to apply to your modified # version as well. AC_DEFUN([AX_FUNC_WHICH_GETHOSTBYNAME_R], [ AC_LANG_PUSH(C) AC_MSG_CHECKING([how many arguments gethostbyname_r() takes]) AC_CACHE_VAL(ac_cv_func_which_gethostbyname_r, [ ################################################################ ac_cv_func_which_gethostbyname_r=unknown # # ONE ARGUMENT (sanity check) # # This should fail, as there is no variant of gethostbyname_r() that takes # a single argument. If it actually compiles, then we can assume that # netdb.h is not declaring the function, and the compiler is thereby # assuming an implicit prototype. In which case, we're out of luck. # AC_COMPILE_IFELSE( AC_LANG_PROGRAM( [[#include <netdb.h>]], [[ char *name = "www.gnu.org"; (void)gethostbyname_r(name) /* ; */ ]]), ac_cv_func_which_gethostbyname_r=no) # # SIX ARGUMENTS # (e.g. Linux) # if test "$ac_cv_func_which_gethostbyname_r" = "unknown"; then AC_COMPILE_IFELSE( AC_LANG_PROGRAM( [[#include <netdb.h>]], [[ char *name = "www.gnu.org"; struct hostent ret, *retp; char buf@<:@1024@:>@; int buflen = 1024; int my_h_errno; (void)gethostbyname_r(name, &ret, buf, buflen, &retp, &my_h_errno) /* ; */ ]]), ac_cv_func_which_gethostbyname_r=six) fi # # FIVE ARGUMENTS # (e.g. Solaris) # if test "$ac_cv_func_which_gethostbyname_r" = "unknown"; then AC_COMPILE_IFELSE( AC_LANG_PROGRAM( [[#include <netdb.h>]], [[ char *name = "www.gnu.org"; struct hostent ret; char buf@<:@1024@:>@; int buflen = 1024; int my_h_errno; (void)gethostbyname_r(name, &ret, buf, buflen, &my_h_errno) /* ; */ ]]), ac_cv_func_which_gethostbyname_r=five) fi # # THREE ARGUMENTS # (e.g. AIX, HP-UX, Tru64) # if test "$ac_cv_func_which_gethostbyname_r" = "unknown"; then AC_COMPILE_IFELSE( AC_LANG_PROGRAM( [[#include <netdb.h>]], [[ char *name = "www.gnu.org"; struct hostent ret; struct hostent_data data; (void)gethostbyname_r(name, &ret, &data) /* ; */ ]]), ac_cv_func_which_gethostbyname_r=three) fi ################################################################ ]) dnl end AC_CACHE_VAL case "$ac_cv_func_which_gethostbyname_r" in three) AC_MSG_RESULT([three]) AC_DEFINE([HAVE_FUNC_GETHOSTBYNAME_R_3], 1, [three-argument gethostbyname_r]) ;; five) AC_MSG_RESULT([five]) AC_DEFINE([HAVE_FUNC_GETHOSTBYNAME_R_5], 1, [five-argument gethostbyname_r]) ;; six) AC_MSG_RESULT([six]) AC_DEFINE([HAVE_FUNC_GETHOSTBYNAME_R_6], 1, [six-argument gethostbyname_r]) ;; no) AC_MSG_RESULT([cannot find function declaration in netdb.h]) ;; unknown) AC_MSG_RESULT([can't tell]) ;; *) AC_MSG_ERROR([internal error]) ;; esac AC_LANG_POP(C) ]) dnl end AC_DEFUN
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