m4/ax_check_class.m4

   1 # ===========================================================================
   2 #      http://www.gnu.org/software/autoconf-archive/ax_check_class.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_CHECK_CLASS
   8 #
   9 # DESCRIPTION
  10 #
  11 #   AX_CHECK_CLASS tests the existence of a given Java class, either in a
  12 #   jar or in a '.class' file.
  13 #
  14 #   *Warning*: its success or failure can depend on a proper setting of the
  15 #   CLASSPATH env. variable.
  16 #
  17 #   Note: This is part of the set of autoconf M4 macros for Java programs.
  18 #   It is VERY IMPORTANT that you download the whole set, some macros depend
  19 #   on other. Unfortunately, the autoconf archive does not support the
  20 #   concept of set of macros, so I had to break it for submission. The
  21 #   general documentation, as well as the sample configure.in, is included
  22 #   in the AX_PROG_JAVA macro.
  23 #
  24 # LICENSE
  25 #
  26 #   Copyright (c) 2008 Stephane Bortzmeyer <bortzmeyer@pasteur.fr>
  27 #
  28 #   This program is free software; you can redistribute it and/or modify it
  29 #   under the terms of the GNU General Public License as published by the
  30 #   Free Software Foundation; either version 2 of the License, or (at your
  31 #   option) any later version.
  32 #
  33 #   This program is distributed in the hope that it will be useful, but
  34 #   WITHOUT ANY WARRANTY; without even the implied warranty of
  35 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  36 #   Public License for more details.
  37 #
  38 #   You should have received a copy of the GNU General Public License along
  39 #   with this program. If not, see <http://www.gnu.org/licenses/>.
  40 #
  41 #   As a special exception, the respective Autoconf Macro's copyright owner
  42 #   gives unlimited permission to copy, distribute and modify the configure
  43 #   scripts that are the output of Autoconf when processing the Macro. You
  44 #   need not follow the terms of the GNU General Public License when using
  45 #   or distributing such scripts, even though portions of the text of the
  46 #   Macro appear in them. The GNU General Public License (GPL) does govern
  47 #   all other use of the material that constitutes the Autoconf Macro.
  48 #
  49 #   This special exception to the GPL applies to versions of the Autoconf
  50 #   Macro released by the Autoconf Archive. When you make and distribute a
  51 #   modified version of the Autoconf Macro, you may extend this special
  52 #   exception to the GPL to apply to your modified version as well.
  53
  54 #serial 7
  55
  56 AU_ALIAS([AC_CHECK_CLASS], [AX_CHECK_CLASS])
  57 AC_DEFUN([AX_CHECK_CLASS],[
  58 AC_REQUIRE([AX_PROG_JAVA])
  59 ac_var_name=`echo $1 | sed 's/\./_/g'`
  60 dnl Normaly I'd use a AC_CACHE_CHECK here but since the variable name is
  61 dnl dynamic I need an extra level of extraction
  62 AC_MSG_CHECKING([for $1 class])
  63 AC_CACHE_VAL(ax_cv_class_$ac_var_name, [
  64 if test x$ac_cv_prog_uudecode_base64 = xyes; then
  65 dnl /**
  66 dnl  * Test.java: used to test dynamicaly if a class exists.
  67 dnl  */
  68 dnl public class Test
  69 dnl {
  70 dnl
  71 dnl public static void
  72 dnl main( String[] argv )
  73 dnl {
  74 dnl     Class lib;
  75 dnl     if (argv.length < 1)
  76 dnl      {
  77 dnl             System.err.println ("Missing argument");
  78 dnl             System.exit (77);
  79 dnl      }
  80 dnl     try
  81 dnl      {
  82 dnl             lib = Class.forName (argv[0]);
  83 dnl      }
  84 dnl     catch (ClassNotFoundException e)
  85 dnl      {
  86 dnl             System.exit (1);
  87 dnl      }
  88 dnl     lib = null;
  89 dnl     System.exit (0);
  90 dnl }
  91 dnl
  92 dnl }
  93 cat << \EOF > Test.uue
  94 begin-base64 644 Test.class
  95 yv66vgADAC0AKQcAAgEABFRlc3QHAAQBABBqYXZhL2xhbmcvT2JqZWN0AQAE
  96 bWFpbgEAFihbTGphdmEvbGFuZy9TdHJpbmc7KVYBAARDb2RlAQAPTGluZU51
  97 bWJlclRhYmxlDAAKAAsBAANlcnIBABVMamF2YS9pby9QcmludFN0cmVhbTsJ
  98 AA0ACQcADgEAEGphdmEvbGFuZy9TeXN0ZW0IABABABBNaXNzaW5nIGFyZ3Vt
  99 ZW50DAASABMBAAdwcmludGxuAQAVKExqYXZhL2xhbmcvU3RyaW5nOylWCgAV
 100 ABEHABYBABNqYXZhL2lvL1ByaW50U3RyZWFtDAAYABkBAARleGl0AQAEKEkp
 101 VgoADQAXDAAcAB0BAAdmb3JOYW1lAQAlKExqYXZhL2xhbmcvU3RyaW5nOylM
 102 amF2YS9sYW5nL0NsYXNzOwoAHwAbBwAgAQAPamF2YS9sYW5nL0NsYXNzBwAi
 103 AQAgamF2YS9sYW5nL0NsYXNzTm90Rm91bmRFeGNlcHRpb24BAAY8aW5pdD4B
 104 AAMoKVYMACMAJAoAAwAlAQAKU291cmNlRmlsZQEACVRlc3QuamF2YQAhAAEA
 105 AwAAAAAAAgAJAAUABgABAAcAAABtAAMAAwAAACkqvgSiABCyAAwSD7YAFBBN
 106 uAAaKgMyuAAeTKcACE0EuAAaAUwDuAAasQABABMAGgAdACEAAQAIAAAAKgAK
 107 AAAACgAAAAsABgANAA4ADgATABAAEwASAB4AFgAiABgAJAAZACgAGgABACMA
 108 JAABAAcAAAAhAAEAAQAAAAUqtwAmsQAAAAEACAAAAAoAAgAAAAQABAAEAAEA
 109 JwAAAAIAKA==
 110 ====
 111 EOF
 112                 if $UUDECODE Test.uue; then
 113                         :
 114                 else
 115                         echo "configure: __oline__: uudecode had trouble decoding base 64 file 'Test.uue'" >&AS_MESSAGE_LOG_FD
 116                         echo "configure: failed file was:" >&AS_MESSAGE_LOG_FD
 117                         cat Test.uue >&AS_MESSAGE_LOG_FD
 118                         ac_cv_prog_uudecode_base64=no
 119                 fi
 120         rm -f Test.uue
 121         if AC_TRY_COMMAND($JAVA -classpath ".:$CLASSPATH" $JAVAFLAGS Test $1) >/dev/null 2>&1; then
 122                 eval "ac_cv_class_$ac_var_name=yes"
 123         else
 124                 eval "ac_cv_class_$ac_var_name=no"
 125         fi
 126         rm -f Test.class
 127 else
 128         AX_TRY_COMPILE_JAVA([$1], , [eval "ac_cv_class_$ac_var_name=yes"],
 129                 [eval "ac_cv_class_$ac_var_name=no"])
 130 fi
 131 eval "ac_var_val=$`eval echo ac_cv_class_$ac_var_name`"
 132 eval "HAVE_$ac_var_name=$`echo ac_cv_class_$ac_var_val`"
 133 HAVE_LAST_CLASS=$ac_var_val
 134 if test x$ac_var_val = xyes; then
 135         ifelse([$2], , :, [$2])
 136 else
 137         ifelse([$3], , :, [$3])
 138 fi
 139 ])
 140 dnl for some reason the above statment didn't fall though here?
 141 dnl do scripts have variable scoping?
 142 eval "ac_var_val=$`eval echo ac_cv_class_$ac_var_name`"
 143 AC_MSG_RESULT($ac_var_val)
 144 ])