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  • Committer: Bazaar Package Importer
  • Author(s): Martin A. Godisch
  • Date: 2004-06-26 09:43:57 UTC
  • Revision ID: james.westby@ubuntu.com-20040626094357-3be3jwcz1vcdhpe8
Tags: upstream-20040616
Import upstream version 20040616

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htmldoc/ac_check_class.html
 
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
 
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"http://www.w3.org/TR/html4/strict.dtd">
 
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<html lang="en">
 
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<head>
 
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  <title>Autoconf Macro: ac_check_class</title>
 
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  <link rel="stylesheet" type="text/css" href="ac-archive.css">
 
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</head>
 
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<body>
 
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  <table summary="web navigation" style="width:100%;">
 
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    <tbody>
 
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      <tr>
 
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        <td style="width:50%;" align="center">[<a href="index.html">Macro Index
 
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        Page</a>]</td>
 
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        <td style="width:50%;" align="center">[<a href=
 
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        "../m4source/ac_check_class.m4">Download M4 Source</a>]</td>
 
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      </tr>
 
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    </tbody>
 
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  </table>
 
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  <hr>
 
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  <h1>ac_check_class</h1>
 
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  <h2>Synopsis</h2>
 
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  <div class="indent">
 
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    <p style="text-align:left; white-space:nowrap;">
 
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    <code>AC_CHECK_CLASS</code></p>
 
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  </div>
 
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  <h2>Description</h2>
 
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  <div class="indent">
 
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    <p>AC_CHECK_CLASS tests the existence of a given Java class, either in a
 
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    jar or in a '.class' file.</p>
 
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    <p>*Warning*: its success or failure can depend on a proper setting of the
 
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    CLASSPATH env. variable.</p>
 
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    <p>Note: This is part of the set of autoconf M4 macros for Java programs.
 
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    It is VERY IMPORTANT that you download the whole set, some macros depend on
 
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    other. Unfortunately, the autoconf archive does not support the concept of
 
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    set of macros, so I had to break it for submission. The general
 
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    documentation, as well as the sample configure.in, is included in the
 
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    AC_PROG_JAVA macro.</p>
 
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  </div>
 
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  <h2>Version</h2>
 
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  <div class="indent">
 
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    <p>1.2 (last modified: 2000-07-19)</p>
 
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  </div>
 
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  <h2>Author</h2>
 
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  <div class="indent">
 
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    <p>Stephane Bortzmeyer &lt;bortzmeyer@pasteur.fr&gt;</p>
 
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  </div>
 
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  <h2>M4 Source Code</h2>
 
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  <div class="indent">
 
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    <pre class="m4source">
 
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AC_DEFUN([AC_CHECK_CLASS],[
 
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AC_REQUIRE([AC_PROG_JAVA])
 
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ac_var_name=`echo $1 | sed 's/\./_/g'`
 
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dnl Normaly I'd use a AC_CACHE_CHECK here but since the variable name is
 
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dnl dynamic I need an extra level of extraction
 
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AC_MSG_CHECKING([for $1 class])
 
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AC_CACHE_VAL(ac_cv_class_$ac_var_name, [
 
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if test x$ac_cv_prog_uudecode_base64 = xyes; then
 
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dnl /**
 
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dnl  * Test.java: used to test dynamicaly if a class exists.
 
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dnl  */
 
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dnl public class Test
 
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dnl {
 
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dnl
 
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dnl public static void
 
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dnl main( String[] argv )
 
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dnl {
 
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dnl     Class lib;
 
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dnl     if (argv.length &lt; 1)
 
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dnl      {
 
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dnl             System.err.println ("Missing argument");
 
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dnl             System.exit (77);
 
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dnl      }
 
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dnl     try
 
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dnl      {
 
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dnl             lib = Class.forName (argv[0]);
 
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dnl      }
 
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dnl     catch (ClassNotFoundException e)
 
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dnl      {
 
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dnl             System.exit (1);
 
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dnl      }
 
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dnl     lib = null;
 
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dnl     System.exit (0);
 
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dnl }
 
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dnl
 
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dnl }
 
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cat &lt;&lt; \EOF &gt; Test.uue
 
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begin-base64 644 Test.class
 
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yv66vgADAC0AKQcAAgEABFRlc3QHAAQBABBqYXZhL2xhbmcvT2JqZWN0AQAE
 
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bWFpbgEAFihbTGphdmEvbGFuZy9TdHJpbmc7KVYBAARDb2RlAQAPTGluZU51
 
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bWJlclRhYmxlDAAKAAsBAANlcnIBABVMamF2YS9pby9QcmludFN0cmVhbTsJ
 
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AA0ACQcADgEAEGphdmEvbGFuZy9TeXN0ZW0IABABABBNaXNzaW5nIGFyZ3Vt
 
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ZW50DAASABMBAAdwcmludGxuAQAVKExqYXZhL2xhbmcvU3RyaW5nOylWCgAV
 
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ABEHABYBABNqYXZhL2lvL1ByaW50U3RyZWFtDAAYABkBAARleGl0AQAEKEkp
 
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VgoADQAXDAAcAB0BAAdmb3JOYW1lAQAlKExqYXZhL2xhbmcvU3RyaW5nOylM
 
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amF2YS9sYW5nL0NsYXNzOwoAHwAbBwAgAQAPamF2YS9sYW5nL0NsYXNzBwAi
 
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AQAgamF2YS9sYW5nL0NsYXNzTm90Rm91bmRFeGNlcHRpb24BAAY8aW5pdD4B
 
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AAMoKVYMACMAJAoAAwAlAQAKU291cmNlRmlsZQEACVRlc3QuamF2YQAhAAEA
 
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AwAAAAAAAgAJAAUABgABAAcAAABtAAMAAwAAACkqvgSiABCyAAwSD7YAFBBN
 
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uAAaKgMyuAAeTKcACE0EuAAaAUwDuAAasQABABMAGgAdACEAAQAIAAAAKgAK
 
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AAAACgAAAAsABgANAA4ADgATABAAEwASAB4AFgAiABgAJAAZACgAGgABACMA
 
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JAABAAcAAAAhAAEAAQAAAAUqtwAmsQAAAAEACAAAAAoAAgAAAAQABAAEAAEA
 
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JwAAAAIAKA==
 
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====
 
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EOF
 
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                if uudecode$EXEEXT Test.uue; then
 
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                        :
 
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                else
 
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                        echo "configure: __oline__: uudecode had trouble decoding base 64 file 'Test.uue'" &gt;&amp;AC_FD_CC
 
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                        echo "configure: failed file was:" &gt;&amp;AC_FD_CC
 
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                        cat Test.uue &gt;&amp;AC_FD_CC
 
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                        ac_cv_prog_uudecode_base64=no
 
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                fi
 
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        rm -f Test.uue
 
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        if AC_TRY_COMMAND($JAVA $JAVAFLAGS Test $1) &gt;/dev/null 2&gt;&amp;1; then
 
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                eval "ac_cv_class_$ac_var_name=yes"
 
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        else
 
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                eval "ac_cv_class_$ac_var_name=no"
 
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        fi
 
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        rm -f Test.class
 
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else
 
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        AC_TRY_COMPILE_JAVA([$1], , [eval "ac_cv_class_$ac_var_name=yes"],
 
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                [eval "ac_cv_class_$ac_var_name=no"])
 
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fi
 
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eval "ac_var_val=$`eval echo ac_cv_class_$ac_var_name`"
 
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eval "HAVE_$ac_var_name=$`echo ac_cv_class_$ac_var_val`"
 
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HAVE_LAST_CLASS=$ac_var_val
 
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if test x$ac_var_val = xyes; then
 
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        ifelse([$2], , :, [$2])
 
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else
 
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        ifelse([$3], , :, [$3])
 
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fi
 
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])
 
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dnl for some reason the above statment didn't fall though here?
 
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dnl do scripts have variable scoping?
 
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eval "ac_var_val=$`eval echo ac_cv_class_$ac_var_name`"
 
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AC_MSG_RESULT($ac_var_val)
 
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])
 
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</pre>
 
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  </div>
 
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  <h2>Copyright</h2>
 
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  <div class="indent">
 
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    <a href="COPYING.html">GNU General Public License</a> with this special
 
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    <a href="COPYING-Exception.html">exception</a>.
 
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  </div>
 
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</body>
 
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</html>