# Search path for a program which passes the given test.
# Ulrich Drepper <drepper@cygnus.com>, 1996.
#
# This file can be copied and used freely without restrictions. It can
# be used in projects which are not available under the GNU Public License
# but which still want to provide support for the GNU gettext functionality.
# Please note that the actual code is *not* freely available.
# Define a conditional.
AC_DEFUN(AM_CONDITIONAL,
[AC_SUBST($1_TRUE)
AC_SUBST($1_FALSE)
if $2; then
$1_TRUE=
$1_FALSE='#'
else
$1_TRUE='#'
$1_FALSE=
fi])
# serial 1
dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
dnl TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
AC_DEFUN(AM_PATH_PROG_WITH_TEST,
[# Extract the first word of "$2", so it can be a program name with args.
set dummy $2; ac_word=[$]2
AC_MSG_CHECKING([for $ac_word])
AC_CACHE_VAL(ac_cv_path_$1,
[case "[$]$1" in
/*)
ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
;;
*)
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
for ac_dir in ifelse([$5], , $PATH, [$5]); do
test -z "$ac_dir" && ac_dir=.
if test -f $ac_dir/$ac_word; then
if [$3]; then
ac_cv_path_$1="$ac_dir/$ac_word"
break
fi
fi
done
IFS="$ac_save_ifs"
dnl If no 4th arg is given, leave the cache variable unset,
dnl so AC_PATH_PROGS will keep looking.
ifelse([$4], , , [ test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
])dnl
;;
esac])dnl
$1="$ac_cv_path_$1"
if test -n "[$]$1"; then
AC_MSG_RESULT([$]$1)
else
AC_MSG_RESULT(no)
fi
AC_SUBST($1)dnl
])
# Check whether LC_MESSAGES is available in <locale.h>.
# Ulrich Drepper <drepper@cygnus.com>, 1995.
#
# This file can be copied and used freely without restrictions. It can
# be used in projects which are not available under the GNU Public License
# but which still want to provide support for the GNU gettext functionality.
# Please note that the actual code is *not* freely available.
# serial 1
AC_DEFUN(AM_LC_MESSAGES,
[if test $ac_cv_header_locale_h = yes; then
AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
[AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
if test $am_cv_val_LC_MESSAGES = yes; then
AC_DEFINE(HAVE_LC_MESSAGES)
fi
fi])
# Macro to add for using GNU gettext.
# Ulrich Drepper <drepper@cygnus.com>, 1995.
#
# This file can be copied and used freely without restrictions. It can
# be used in projects which are not available under the GNU Public License
# but which still want to provide support for the GNU gettext functionality.
# Please note that the actual code is *not* freely available.
# NOTE: This version has been hacked to reverse the obnoxious 'yes' default.
# serial 5
AC_DEFUN(AM_WITH_NLS,
[AC_MSG_CHECKING([whether NLS is requested])
dnl Default is disable NLS
AC_ARG_ENABLE(nls,
[AC_HELP_STRING([--enable-nls], [enable Native Language Support])],
USE_NLS=$enableval, USE_NLS=no)
AC_MSG_RESULT($USE_NLS)
AC_SUBST(USE_NLS)
USE_INCLUDED_LIBINTL=no
dnl If we use NLS figure out what method
if test "$USE_NLS" = "yes"; then
AC_DEFINE(ENABLE_NLS)
AC_MSG_CHECKING([whether included gettext is requested])
AC_ARG_WITH(included-gettext,
[ --with-included-gettext use the GNU gettext library included here],
nls_cv_force_use_gnu_gettext=$withval,
nls_cv_force_use_gnu_gettext=no)
AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
dnl User does not insist on using GNU NLS library. Figure out what
dnl to use. If gettext or catgets are available (in this order) we
dnl use this. Else we have to fall back to GNU NLS library.
dnl catgets is only used if permitted by option --with-catgets.
nls_cv_header_intl=
nls_cv_header_libgt=
CATOBJEXT=NONE
AC_CHECK_HEADER(libintl.h,
[AC_CACHE_CHECK([for gettext in libc], gt_cv_func_gettext_libc,
[AC_TRY_LINK([#include <libintl.h>], [return (int) gettext ("")],
gt_cv_func_gettext_libc=yes, gt_cv_func_gettext_libc=no)])
if test "$gt_cv_func_gettext_libc" != "yes"; then
AC_CHECK_LIB(intl, bindtextdomain,
[AC_CACHE_CHECK([for gettext in libintl],
gt_cv_func_gettext_libintl,
[AC_CHECK_LIB(intl, gettext,
gt_cv_func_gettext_libintl=yes,
gt_cv_func_gettext_libintl=no)],
gt_cv_func_gettext_libintl=no)])
fi
if test "$gt_cv_func_gettext_libc" = "yes" \
|| test "$gt_cv_func_gettext_libintl" = "yes"; then
AC_DEFINE(HAVE_GETTEXT)
AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
[test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)dnl
if test "$MSGFMT" != "no"; then
AC_CHECK_FUNCS(dcgettext)
AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
[test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
AC_TRY_LINK(, [extern int _nl_msg_cat_cntr;
return _nl_msg_cat_cntr],
[CATOBJEXT=.gmo
DATADIRNAME=share],
[CATOBJEXT=.mo
DATADIRNAME=lib])
INSTOBJEXT=.mo
fi
fi
])
if test "$CATOBJEXT" = "NONE"; then
AC_MSG_CHECKING([whether catgets can be used])
AC_ARG_WITH(catgets,
[ --with-catgets use catgets functions if available],
nls_cv_use_catgets=$withval, nls_cv_use_catgets=no)
AC_MSG_RESULT($nls_cv_use_catgets)
if test "$nls_cv_use_catgets" = "yes"; then
dnl No gettext in C library. Try catgets next.
AC_CHECK_LIB(i, main)
AC_CHECK_FUNC(catgets,
[AC_DEFINE(HAVE_CATGETS)
INTLOBJS="\$(CATOBJS)"
AC_PATH_PROG(GENCAT, gencat, no)dnl
if test "$GENCAT" != "no"; then
AC_PATH_PROG(GMSGFMT, gmsgfmt, no)
if test "$GMSGFMT" = "no"; then
AM_PATH_PROG_WITH_TEST(GMSGFMT, msgfmt,
[test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], no)
fi
AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
[test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
USE_INCLUDED_LIBINTL=yes
CATOBJEXT=.cat
INSTOBJEXT=.cat
DATADIRNAME=lib
INTLDEPS='$(topdir)/src/intl/libintl.a'
INTLINCLUDE='-I$(topdir)/src/intl'
INTLLIBS=$INTLDEPS
LIBS=`echo $LIBS | sed -e 's/-lintl//'`
nls_cv_header_intl=$srcdir/include/libintl.h
nls_cv_header_libgt=$srcdir/src/intl/libgettext.h
fi])
fi
fi
if test "$CATOBJEXT" = "NONE"; then
dnl Neither gettext nor catgets in included in the C library.
dnl Fall back on GNU gettext library.
nls_cv_use_gnu_gettext=yes
fi
fi
if test "$nls_cv_use_gnu_gettext" = "yes"; then
dnl Mark actions used to generate GNU NLS library.
INTLOBJS="\$(GETTOBJS)"
AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
[test -z "`$ac_dir/$ac_word -h 2>&1 | grep 'dv '`"], msgfmt)
AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
[test -z "`$ac_dir/$ac_word -h 2>&1 | grep '(HELP)'`"], :)
AC_SUBST(MSGFMT)
USE_INCLUDED_LIBINTL=yes
CATOBJEXT=.gmo
INSTOBJEXT=.mo
DATADIRNAME=share
INTLDEPS='$(topdir)/src/intl/libintl.a'
INTLINCLUDE='-I$(topdir)/src/intl'
INTLLIBS=$INTLDEPS
LIBS=`echo $LIBS | sed -e 's/-lintl//'`
nls_cv_header_intl=$srcdir/include/libintl.h
nls_cv_header_libgt=$srcdir/src/intl/libgettext.h
fi
dnl Test whether we really found GNU xgettext.
if test "$XGETTEXT" != ":"; then
dnl If it is no GNU xgettext we define it as : so that the
dnl Makefiles still can work.
if $XGETTEXT --omit-header /dev/null 2> /dev/null; then
: ;
else
AC_MSG_RESULT(
[found xgettext program is not GNU xgettext; ignore it])
XGETTEXT=":"
fi
fi
# We need to process the po/ directory.
POSUB=po
else
DATADIRNAME=share
nls_cv_header_intl=$srcdir/include/libintl.h
nls_cv_header_libgt=$srcdir/src/intl/libgettext.h
fi
AC_LINK_FILES($nls_cv_header_libgt, $nls_cv_header_intl)
AC_OUTPUT_COMMANDS(
[case "$CONFIG_FILES" in *po/Makefile.in*)
sed -e "/POTFILES =/r src/po/POTFILES" src/po/Makefile.in > src/po/Makefile
esac])
# If this is used in GNU gettext we have to set USE_NLS to `yes'
# because some of the sources are only built for this goal.
if test "$PACKAGE" = "gettext" ; then
USE_NLS=yes
USE_INCLUDED_LIBINTL=yes
fi
dnl These rules are solely for the distribution goal. While doing this
dnl we only have to keep exactly one list of the available catalogs
dnl in configure.in.
for lang in $ALL_LINGUAS; do
GMOFILES="$GMOFILES $lang.gmo"
POFILES="$POFILES $lang.po"
done
dnl Make all variables we use known to autoconf.
AC_SUBST(USE_INCLUDED_LIBINTL)
AC_SUBST(CATALOGS)
AC_SUBST(CATOBJEXT)
AC_SUBST(DATADIRNAME)
AC_SUBST(GMOFILES)
AC_SUBST(INSTOBJEXT)
AC_SUBST(INTLDEPS)
AC_SUBST(INTLLIBS)
AC_SUBST(INTLINCLUDE)
AC_SUBST(INTLOBJS)
AC_SUBST(POFILES)
AC_SUBST(POSUB)
])
AC_DEFUN(AM_GNU_GETTEXT,
[AC_REQUIRE([AC_PROG_MAKE_SET])dnl
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_RANLIB])dnl
AC_REQUIRE([AC_ISC_POSIX])dnl
AC_REQUIRE([AC_HEADER_STDC])dnl
AC_REQUIRE([AC_C_CONST])dnl
AC_REQUIRE([AC_C_INLINE])dnl
AC_REQUIRE([AC_TYPE_OFF_T])dnl
AC_REQUIRE([AC_TYPE_SIZE_T])dnl
AC_REQUIRE([AC_FUNC_ALLOCA])dnl
AC_REQUIRE([AC_FUNC_MMAP])dnl
AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h string.h \
unistd.h sys/param.h])
AC_CHECK_FUNCS([getcwd munmap putenv setenv setlocale strchr strcasecmp \
strdup __argz_count __argz_stringify __argz_next])
if test "${ac_cv_func_stpcpy+set}" != "set"; then
AC_CHECK_FUNCS(stpcpy)
fi
if test "${ac_cv_func_stpcpy}" = "yes"; then
AC_DEFINE(HAVE_STPCPY)
fi
AM_LC_MESSAGES
AM_WITH_NLS
if test "x$CATOBJEXT" != "x"; then
if test "x$ALL_LINGUAS" = "x"; then
LINGUAS=
else
AC_MSG_CHECKING(for catalogs to be installed)
NEW_LINGUAS=
for lang in ${LINGUAS=$ALL_LINGUAS}; do
case "$ALL_LINGUAS" in
*$lang*) NEW_LINGUAS="$NEW_LINGUAS $lang" ;;
esac
done
LINGUAS=$NEW_LINGUAS
AC_MSG_RESULT($LINGUAS)
fi
dnl Construct list of names of catalog files to be constructed.
if test -n "$LINGUAS"; then
for lang in $LINGUAS; do CATALOGS="$CATALOGS $lang$CATOBJEXT"; done
fi
fi
dnl The reference to <locale.h> in the installed <libintl.h> file
dnl must be resolved because we cannot expect the users of this
dnl to define HAVE_LOCALE_H.
if test $ac_cv_header_locale_h = yes; then
INCLUDE_LOCALE_H="#include <locale.h>"
else
INCLUDE_LOCALE_H="\
/* The system does not provide the header <locale.h>. Take care yourself. */"
fi
AC_SUBST(INCLUDE_LOCALE_H)
dnl Determine which catalog format we have (if any is needed)
dnl For now we know about two different formats:
dnl Linux libc-5 and the normal X/Open format
test -d $srcdir/src/intl || mkdir $srcdir/src/intl
if test "$CATOBJEXT" = ".cat"; then
AC_CHECK_HEADER(linux/version.h, msgformat=linux, msgformat=xopen)
dnl Transform the SED scripts while copying because some dumb SEDs
dnl cannot handle comments.
sed -e '/^#/d' $srcdir/src/intl/$msgformat-msg.sed > $srcdir/src/intl/po2msg.sed
fi
dnl po2tbl.sed is always needed.
sed -e '/^#.*[^\\]$/d' -e '/^#$/d' \
$srcdir/src/intl/po2tbl.sed.in > $srcdir/src/intl/po2tbl.sed
dnl In the src/intl/Makefile.in we have a special dependency which makes
dnl only sense for gettext. We comment this out for non-gettext
dnl packages.
if test "$PACKAGE" = "gettext"; then
GT_NO="#NO#"
GT_YES=
else
GT_NO=
GT_YES="#YES#"
fi
AC_SUBST(GT_NO)
AC_SUBST(GT_YES)
dnl *** For now the libtool support in src/intl/Makefile is not for real.
l=
AC_SUBST(l)
dnl Generate list of files to be processed by xgettext which will
dnl be included in src/po/Makefile.
test -d src/po || mkdir src/po
if test "x$srcdir" != "x."; then
if test "x`echo $srcdir | sed 's@/.*@@'`" = "x"; then
posrcprefix="$srcdir/"
else
posrcprefix="../$srcdir/"
fi
else
posrcprefix="../"
fi
rm -f src/po/POTFILES
sed -e "/^#/d" -e "/^\$/d" -e "s,.*, $posrcprefix& \\\\," -e "\$s/\(.*\) \\\\/\1/" \
< $srcdir/src/po/POTFILES.in > src/po/POTFILES
])
AC_DEFUN(AC_TYPE_SOCKETLEN_T,
[ dnl check for socklen_t (in Unix98)
AC_MSG_CHECKING(for socklen_t)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
socklen_t x;
],[],[AC_MSG_RESULT(yes)],[
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
int accept (int, struct sockaddr *, size_t *);
],[],[
AC_MSG_RESULT(size_t)
AC_DEFINE(socklen_t,size_t)], [
AC_MSG_RESULT(int)
AC_DEFINE(socklen_t,int)])])
])
# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
#
# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# PKG_PROG_PKG_CONFIG([MIN-VERSION])
# ----------------------------------
AC_DEFUN([PKG_PROG_PKG_CONFIG],
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
fi
if test -n "$PKG_CONFIG"; then
_pkg_min_version=m4_default([$1], [0.9.0])
AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
PKG_CONFIG=""
fi
fi[]dnl
])# PKG_PROG_PKG_CONFIG
# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
#
# Check to see whether a particular set of modules exists. Similar
# to PKG_CHECK_MODULES(), but does not set variables or print errors.
#
#
# Similar to PKG_CHECK_MODULES, make sure that the first instance of
# this or PKG_CHECK_MODULES is called, or make sure to call
# PKG_CHECK_EXISTS manually
# --------------------------------------------------------------
AC_DEFUN([PKG_CHECK_EXISTS],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
if test -n "$PKG_CONFIG" && \
AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
m4_ifval([$2], [$2], [:])
m4_ifvaln([$3], [else
$3])dnl
fi])
# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
# ---------------------------------------------
m4_define([_PKG_CONFIG],
[if test -n "$PKG_CONFIG"; then
if test -n "$$1"; then
pkg_cv_[]$1="$$1"
else
PKG_CHECK_EXISTS([$3],
[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
[pkg_failed=yes])
fi
else
pkg_failed=untried
fi[]dnl
])# _PKG_CONFIG
# _PKG_SHORT_ERRORS_SUPPORTED
# -----------------------------
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
_pkg_short_errors_supported=yes
else
_pkg_short_errors_supported=no
fi[]dnl
])# _PKG_SHORT_ERRORS_SUPPORTED
# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
# [ACTION-IF-NOT-FOUND])
#
#
# Note that if there is a possibility the first call to
# PKG_CHECK_MODULES might not happen, you should be sure to include an
# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
#
#
# --------------------------------------------------------------
AC_DEFUN([PKG_CHECK_MODULES],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
pkg_failed=no
AC_MSG_CHECKING([for $1])
_PKG_CONFIG([$1][_CFLAGS], [cflags-only-I], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])
if test $pkg_failed = yes; then
_PKG_SHORT_ERRORS_SUPPORTED
if test $_pkg_short_errors_supported = yes; then
$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
else
$1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
fi
# Put the nasty error message in config.log where it belongs
echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
ifelse([$4], , [AC_MSG_ERROR(dnl
[Package requirements ($2) were not met:
$$1_PKG_ERRORS
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
_PKG_TEXT
])],
[$4])
elif test $pkg_failed = untried; then
ifelse([$4], , [AC_MSG_FAILURE(dnl
[The pkg-config script could not be found or is too old. Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.
_PKG_TEXT
To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.])],
[$4])
else
$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
AC_MSG_RESULT([yes])
ifelse([$3], , :, [$3])
fi[]dnl
])# PKG_CHECK_MODULES
dnl @synopsis AX_FUNC_WHICH_GETHOSTBYNAME_R
dnl
dnl Determines which historical variant of the gethostbyname_r() call
dnl (taking three, five, or six arguments) is available on the system
dnl and defines one of the following macros accordingly:
dnl
dnl HAVE_FUNC_GETHOSTBYNAME_R_6
dnl HAVE_FUNC_GETHOSTBYNAME_R_5
dnl HAVE_FUNC_GETHOSTBYNAME_R_3
dnl
dnl If used in conjunction with gethostname.c, the API demonstrated in
dnl test.c can be used regardless of which gethostbyname_r() is
dnl available. These example files can be found at
dnl http://www.csn.ul.ie/~caolan/publink/gethostbyname_r
dnl
dnl based on David Arnold's autoconf suggestion in the threads faq
dnl
dnl Originally named "AC_caolan_FUNC_WHICH_GETHOSTBYNAME_R". Rewritten
dnl for Autoconf 2.5x by Daniel Richard G.
dnl
dnl @category InstalledPackages
dnl @author Caolan McNamara <caolan@skynet.ie>
dnl @author Daniel Richard G. <skunk@iskunk.org>
dnl @version 2005-01-21
dnl @license GPLWithACException
AC_DEFUN([AX_FUNC_WHICH_GETHOSTBYNAME_R], [
AC_LANG_PUSH(C)
AC_MSG_CHECKING([how many arguments gethostbyname_r() takes])
AC_CACHE_VAL(ac_cv_func_which_gethostbyname_r, [
################################################################
ac_cv_func_which_gethostbyname_r=unknown
#
# ONE ARGUMENT (sanity check)
#
# This should fail, as there is no variant of gethostbyname_r() that takes
# a single argument. If it actually compiles, then we can assume that
# netdb.h is not declaring the function, and the compiler is thereby
# assuming an implicit prototype. In which case, we're out of luck.
#
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM(
[[#include <netdb.h>]],
[[
char *name = "www.gnu.org";
(void)gethostbyname_r(name) /* ; */
]]),
ac_cv_func_which_gethostbyname_r=no)
#
# SIX ARGUMENTS
# (e.g. Linux)
#
if test "$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)
;;
five)
AC_MSG_RESULT([five])
AC_DEFINE(HAVE_FUNC_GETHOSTBYNAME_R_5)
;;
six)
AC_MSG_RESULT([six])
AC_DEFINE(HAVE_FUNC_GETHOSTBYNAME_R_6)
;;
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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