##### http://autoconf-archive.cryp.to/ac_check_class.html

#

# SYNOPSIS

#

#   AC_CHECK_CLASS

#

# DESCRIPTION

#

#   AC_CHECK_CLASS tests the existence of a given Java class, either in

#   a jar or in a '.class' file.

#

#   *Warning*: its success or failure can depend on a proper setting of

#   the CLASSPATH env. variable.

#

#   Note: This is part of the set of autoconf M4 macros for Java

#   programs. It is VERY IMPORTANT that you download the whole set,

#   some macros depend on other. Unfortunately, the autoconf archive

#   does not support the concept of set of macros, so I had to break it

#   for submission. The general documentation, as well as the sample

#   configure.in, is included in the AC_PROG_JAVA macro.

#

# LAST MODIFICATION

#

#   2000-07-19

#

# COPYLEFT

#

#   Copyright (c) 2000 Stephane Bortzmeyer <bortzmeyer@pasteur.fr>

#

#   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, see <http://www.gnu.org/licenses/>.

#

#   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([AC_CHECK_CLASS],[

AC_REQUIRE([AC_PROG_JAVA])

ac_var_name=`echo $1 | sed 's/\./_/g'`

dnl Normaly I'd use a AC_CACHE_CHECK here but since the variable name is

dnl dynamic I need an extra level of extraction

AC_MSG_CHECKING([for $1 class])

AC_CACHE_VAL(ac_cv_class_$ac_var_name, [

if test x$ac_cv_prog_uudecode_base64 = xyes; then

dnl /**

dnl  * Test.java: used to test dynamicaly if a class exists.

dnl  */

dnl public class Test

dnl {

dnl

dnl public static void

dnl main( String[] argv )

dnl {

dnl     Class lib;

dnl     if (argv.length < 1)

dnl      {

dnl             System.err.println ("Missing argument");

dnl             System.exit (77);

dnl      }

dnl     try

dnl      {

dnl             lib = Class.forName (argv[0]);

dnl      }

dnl     catch (ClassNotFoundException e)

dnl      {

dnl             System.exit (1);

dnl      }

dnl     lib = null;

dnl     System.exit (0);

dnl }

dnl

dnl }

cat << \EOF > Test.uue

begin-base64 644 Test.class

yv66vgADAC0AKQcAAgEABFRlc3QHAAQBABBqYXZhL2xhbmcvT2JqZWN0AQAE

bWFpbgEAFihbTGphdmEvbGFuZy9TdHJpbmc7KVYBAARDb2RlAQAPTGluZU51

bWJlclRhYmxlDAAKAAsBAANlcnIBABVMamF2YS9pby9QcmludFN0cmVhbTsJ

AA0ACQcADgEAEGphdmEvbGFuZy9TeXN0ZW0IABABABBNaXNzaW5nIGFyZ3Vt

ZW50DAASABMBAAdwcmludGxuAQAVKExqYXZhL2xhbmcvU3RyaW5nOylWCgAV

ABEHABYBABNqYXZhL2lvL1ByaW50U3RyZWFtDAAYABkBAARleGl0AQAEKEkp

VgoADQAXDAAcAB0BAAdmb3JOYW1lAQAlKExqYXZhL2xhbmcvU3RyaW5nOylM

amF2YS9sYW5nL0NsYXNzOwoAHwAbBwAgAQAPamF2YS9sYW5nL0NsYXNzBwAi

AQAgamF2YS9sYW5nL0NsYXNzTm90Rm91bmRFeGNlcHRpb24BAAY8aW5pdD4B

AAMoKVYMACMAJAoAAwAlAQAKU291cmNlRmlsZQEACVRlc3QuamF2YQAhAAEA

AwAAAAAAAgAJAAUABgABAAcAAABtAAMAAwAAACkqvgSiABCyAAwSD7YAFBBN

uAAaKgMyuAAeTKcACE0EuAAaAUwDuAAasQABABMAGgAdACEAAQAIAAAAKgAK

AAAACgAAAAsABgANAA4ADgATABAAEwASAB4AFgAiABgAJAAZACgAGgABACMA

JAABAAcAAAAhAAEAAQAAAAUqtwAmsQAAAAEACAAAAAoAAgAAAAQABAAEAAEA

JwAAAAIAKA==

====

EOF

                if uudecode$EXEEXT Test.uue; then

                        :

                else

                        echo "configure: __oline__: uudecode had trouble decoding base 64 file 'Test.uue'" >&AC_FD_CC

                        echo "configure: failed file was:" >&AC_FD_CC

                        cat Test.uue >&AC_FD_CC

                        ac_cv_prog_uudecode_base64=no

                fi

        rm -f Test.uue

        if AC_TRY_COMMAND($JAVA $JAVAFLAGS Test $1) >/dev/null 2>&1; then

                eval "ac_cv_class_$ac_var_name=yes"

        else

                eval "ac_cv_class_$ac_var_name=no"

        fi

        rm -f Test.class

else

        AC_TRY_COMPILE_JAVA([$1], , [eval "ac_cv_class_$ac_var_name=yes"],

                [eval "ac_cv_class_$ac_var_name=no"])

fi

eval "ac_var_val=$`eval echo ac_cv_class_$ac_var_name`"

eval "HAVE_$ac_var_name=$`echo ac_cv_class_$ac_var_val`"

HAVE_LAST_CLASS=$ac_var_val

if test x$ac_var_val = xyes; then

        ifelse([$2], , :, [$2])

else

        ifelse([$3], , :, [$3])

fi

])

dnl for some reason the above statment didn't fall though here?

dnl do scripts have variable scoping?

eval "ac_var_val=$`eval echo ac_cv_class_$ac_var_name`"

AC_MSG_RESULT($ac_var_val)

])