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2007-04-12 Christian Thalinger <twisti@complang.tuwien.ac.at>
* LICENSE: Added m4/ax_func_which_gethostbyname_r.m4 license. * configure.ac: Added AX_FUNC_WHICH_GETHOSTBYNAME_R check. * m4/ax_func_which_gethostbyname_r.m4: New file. * native/jni/native-lib/cpnet.c (cpnet_getHostByName): Check for different number of arguments of gethostbyname_r.
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| # m4/ax_func_which_gethostbyname_r.m4 | ||
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| # Copyright © 2005 Caolan McNamara <caolan@skynet.ie> | ||
| # Copyright © 2005 Daniel Richard G. <skunk@iskunk.org> | ||
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| # 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. | ||
|
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| # 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. | ||
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|
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| # 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. | ||
|
|
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| # 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. | ||
|
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| 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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