Core: Use automake-1.11 when possible

 * Makefile.am:
   use new automake-1.11 silent rules if possible
   move macros to m4 directory
 * m4/gtk-doc.m4:
   add gtk-doc macros.
 * lasso/Makefile.am:
   add missing -f flag to rm, to unbreak make distcheck
 * docs/references/Makefile.am:
   fix problem between libtool and gtk-doc
 * autogen.sh:
   update to autogen.sh from gtk-doc, add support for automake-1.11

22 files changed, 1712 insertions, 0 deletions

diff --git a/m4/ac_check_class.m4 b/m4/ac_check_class.m4
new file mode 100644
index 00000000..264ba4d9
--- /dev/null
+++ b/m4/ac_check_class.m4
@@ -0,0 +1,147 @@
+##### 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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$ac_cv_prog_uudecode_base64 = xyes; then
+dnl /**
+dnl  * Test.java: used to test dynamicaly if a class exists.
+dnl  */
+dnl public class Test
+dnl {
+dnl
+dnl public static void
+dnl main( String[] argv )
+dnl {
+dnl     Class lib;
+dnl     if (argv.length < 1)
+dnl      {
+dnl             System.err.println ("Missing argument");
+dnl             System.exit (77);
+dnl      }
+dnl     try
+dnl      {
+dnl             lib = Class.forName (argv[0]);
+dnl      }
+dnl     catch (ClassNotFoundException e)
+dnl      {
+dnl             System.exit (1);
+dnl      }
+dnl     lib = null;
+dnl     System.exit (0);
+dnl }
+dnl
+dnl }
+cat << \EOF > Test.uue
+begin-base64 644 Test.class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+====
+EOF
+                if uudecode$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)
+])
diff --git a/m4/ac_check_classpath.m4 b/m4/ac_check_classpath.m4
new file mode 100644
index 00000000..bfbdda4a
--- /dev/null
+++ b/m4/ac_check_classpath.m4
@@ -0,0 +1,63 @@
+##### http://autoconf-archive.cryp.to/ac_check_classpath.html
+#
+# SYNOPSIS
+#
+#   AC_CHECK_CLASSPATH
+#
+# DESCRIPTION
+#
+#   AC_CHECK_CLASSPATH just displays the CLASSPATH, for the edification
+#   of the user.
+#
+#   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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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_CLASSPATH],[
+if test "x$CLASSPATH" = x; then
+        echo "You have no CLASSPATH, I hope it is good"
+else
+        echo "You have CLASSPATH $CLASSPATH, hope it is correct"
+fi
+])
diff --git a/m4/ac_check_java_home.m4 b/m4/ac_check_java_home.m4
new file mode 100644
index 00000000..88bfbd18
--- /dev/null
+++ b/m4/ac_check_java_home.m4
@@ -0,0 +1,62 @@
+##### http://autoconf-archive.cryp.to/ac_check_java_home.html
+#
+# SYNOPSIS
+#
+#   AC_CHECK_JAVA_HOME
+#
+# DESCRIPTION
+#
+#   Check for Sun Java (JDK / JRE) installation, where the 'java' VM is
+#   in. If found, set environment variable JAVA_HOME = Java
+#   installation home, else left JAVA_HOME untouch, which in most case
+#   means JAVA_HOME is empty.
+#
+# LAST MODIFICATION
+#
+#   2002-10-10
+#
+# COPYLEFT
+#
+#   Copyright (c) 2002 Gleen Salmon <gleensalmon@yahoo.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, 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_JAVA_HOME],[
+AC_REQUIRE([AC_EXEEXT])dnl
+TRY_JAVA_HOME=`ls -dr /usr/java/* 2> /dev/null | head -n 1`
+if test x$TRY_JAVA_HOME != x; then
+	PATH=$PATH:$TRY_JAVA_HOME/bin
+fi
+AC_PATH_PROG(JAVA_PATH_NAME, java$EXEEXT)
+if test x$JAVA_PATH_NAME != x; then
+	JAVA_HOME=`echo $JAVA_PATH_NAME | sed "s/\(.*\)[[/]]bin[[/]]java$EXEEXT$/\1/"`
+fi;dnl
+])
diff --git a/m4/ac_check_junit.m4 b/m4/ac_check_junit.m4
new file mode 100644
index 00000000..3214335d
--- /dev/null
+++ b/m4/ac_check_junit.m4
@@ -0,0 +1,69 @@
+##### http://autoconf-archive.cryp.to/ac_check_junit.html
+#
+# SYNOPSIS
+#
+#   AC_CHECK_JUNIT
+#
+# DESCRIPTION
+#
+#   AC_CHECK_JUNIT tests the availability of the Junit testing
+#   framework, and set some variables for conditional compilation of
+#   the test suite by automake.
+#
+#   If available, JUNIT is set to a command launching the text based
+#   user interface of Junit, @JAVA_JUNIT@ is set to $JAVA_JUNIT and
+#   @TESTS_JUNIT@ is set to $TESTS_JUNIT, otherwise they are set to
+#   empty values.
+#
+#   You can use these variables in your Makefile.am file like this :
+#
+#    # Some of the following classes are built only if junit is available
+#    JAVA_JUNIT  = Class1Test.java Class2Test.java AllJunitTests.java
+#
+#    noinst_JAVA = Example1.java Example2.java @JAVA_JUNIT@
+#
+#    EXTRA_JAVA  = $(JAVA_JUNIT)
+#
+#    TESTS_JUNIT = AllJunitTests
+#
+#    TESTS       = StandaloneTest1 StandaloneTest2 @TESTS_JUNIT@
+#
+#    EXTRA_TESTS = $(TESTS_JUNIT)
+#
+#    AllJunitTests :
+#       echo "#! /bin/sh" > $@
+#       echo "exec @JUNIT@ my.package.name.AllJunitTests" >> $@
+#       chmod +x $@
+#
+# LAST MODIFICATION
+#
+#   2001-03-02
+#
+# COPYLEFT
+#
+#   Copyright (c) 2001 Luc Maisonobe <luc@spaceroots.org>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_CHECK_JUNIT],[
+AC_CACHE_VAL(ac_cv_prog_JUNIT,[
+AC_CHECK_CLASS(junit.textui.TestRunner)
+if test x"`eval 'echo $ac_cv_class_junit_textui_TestRunner'`" != xno ; then
+  ac_cv_prog_JUNIT='$(CLASSPATH_ENV) $(JAVA) $(JAVAFLAGS) junit.textui.TestRunner'
+fi])
+AC_MSG_CHECKING([for junit])
+if test x"`eval 'echo $ac_cv_prog_JUNIT'`" != x ; then
+  JUNIT="$ac_cv_prog_JUNIT"
+  JAVA_JUNIT='$(JAVA_JUNIT)'
+  TESTS_JUNIT='$(TESTS_JUNIT)'
+else
+  JUNIT=
+  JAVA_JUNIT=
+  TESTS_JUNIT=
+fi
+AC_MSG_RESULT($JUNIT)
+AC_SUBST(JUNIT)
+AC_SUBST(JAVA_JUNIT)
+AC_SUBST(TESTS_JUNIT)])
diff --git a/m4/ac_check_rqrd_class.m4 b/m4/ac_check_rqrd_class.m4
new file mode 100644
index 00000000..fb13fff1
--- /dev/null
+++ b/m4/ac_check_rqrd_class.m4
@@ -0,0 +1,65 @@
+##### http://autoconf-archive.cryp.to/ac_check_rqrd_class.html
+#
+# SYNOPSIS
+#
+#   AC_CHECK_RQRD_CLASS
+#
+# DESCRIPTION
+#
+#   AC_CHECK_RQRD_CLASS tests the existence of a given Java class,
+#   either in a jar or in a '.class' file and fails if it doesn't
+#   exist. 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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_RQRD_CLASS],[
+CLASS=`echo $1|sed 's/\./_/g'`
+AC_CHECK_CLASS($1)
+if test "$HAVE_LAST_CLASS" = "no"; then
+true
+fi
+])
diff --git a/m4/ac_java_options.m4 b/m4/ac_java_options.m4
new file mode 100644
index 00000000..290406e8
--- /dev/null
+++ b/m4/ac_java_options.m4
@@ -0,0 +1,46 @@
+##### http://autoconf-archive.cryp.to/ac_java_options.html
+#
+# SYNOPSIS
+#
+#   AC_JAVA_OPTIONS
+#
+# DESCRIPTION
+#
+#   AC_JAVA_OPTIONS adds configure command line options used for Java
+#   m4 macros. This Macro is optional.
+#
+#   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 Devin Weaver <ktohg@tritarget.com>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_JAVA_OPTIONS],[
+AC_ARG_WITH(java-prefix,
+                        [  --with-java-prefix=PFX  prefix where Java runtime is installed (optional)])
+AC_ARG_WITH(javac-flags,
+                        [  --with-javac-flags=FLAGS flags to pass to the Java compiler (optional)])
+AC_ARG_WITH(java-flags,
+                        [  --with-java-flags=FLAGS flags to pass to the Java VM (optional)])
+JAVAPREFIX=$with_java_prefix
+JAVACFLAGS=$with_javac_flags
+JAVAFLAGS=$with_java_flags
+AC_SUBST(JAVAPREFIX)dnl
+AC_SUBST(JAVACFLAGS)dnl
+AC_SUBST(JAVAFLAGS)dnl
+AC_SUBST(JAVA)dnl
+AC_SUBST(JAVAC)dnl
+])
diff --git a/m4/ac_prog_jar.m4 b/m4/ac_prog_jar.m4
new file mode 100644
index 00000000..266d310c
--- /dev/null
+++ b/m4/ac_prog_jar.m4
@@ -0,0 +1,52 @@
+##### http://autoconf-archive.cryp.to/ac_prog_jar.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAR
+#
+# DESCRIPTION
+#
+#   AC_PROG_JAR tests for an existing jar program. It uses the
+#   environment variable JAR then tests in sequence various common jar
+#   programs.
+#
+#   If you want to force a specific compiler:
+#
+#   - at the configure.in level, set JAR=yourcompiler before calling
+#   AC_PROG_JAR
+#
+#   - at the configure level, setenv JAR
+#
+#   You can use the JAR variable in your Makefile.in, with @JAR@.
+#
+#   Note: This macro depends on the autoconf M4 macros for Java
+#   programs. It is VERY IMPORTANT that you download that whole set,
+#   some macros depend on other. Unfortunately, the autoconf archive
+#   does not support the concept of set of macros, so I had to break it
+#   for submission.
+#
+#   The general documentation of those macros, as well as the sample
+#   configure.in, is included in the AC_PROG_JAVA macro.
+#
+# LAST MODIFICATION
+#
+#   2000-07-19
+#
+# COPYLEFT
+#
+#   Copyright (c) 2000 Egon Willighagen <e.willighagen@science.ru.nl>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_PROG_JAR],[
+AC_REQUIRE([AC_EXEEXT])dnl
+if test "x$JAVAPREFIX" = x; then
+        test "x$JAR" = x && AC_CHECK_PROGS(JAR, jar$EXEEXT)
+else
+        test "x$JAR" = x && AC_CHECK_PROGS(JAR, jar, $JAVAPREFIX)
+fi
+true
+AC_PROVIDE([$0])dnl
+])
diff --git a/m4/ac_prog_java.m4 b/m4/ac_prog_java.m4
new file mode 100644
index 00000000..af2b6cbd
--- /dev/null
+++ b/m4/ac_prog_java.m4
@@ -0,0 +1,122 @@
+##### http://autoconf-archive.cryp.to/ac_prog_java.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVA
+#
+# DESCRIPTION
+#
+#   Here is a summary of the main macros:
+#
+#   AC_PROG_JAVAC: finds a Java compiler.
+#
+#   AC_PROG_JAVA: finds a Java virtual machine.
+#
+#   AC_CHECK_CLASS: finds if we have the given class (beware of
+#   CLASSPATH!).
+#
+#   AC_CHECK_RQRD_CLASS: finds if we have the given class and stops
+#   otherwise.
+#
+#   AC_TRY_COMPILE_JAVA: attempt to compile user given source.
+#
+#   AC_TRY_RUN_JAVA: attempt to compile and run user given source.
+#
+#   AC_JAVA_OPTIONS: adds Java configure options.
+#
+#   AC_PROG_JAVA tests an existing Java virtual machine. It uses the
+#   environment variable JAVA then tests in sequence various common
+#   Java virtual machines. For political reasons, it starts with the
+#   free ones. You *must* call [AC_PROG_JAVAC] before.
+#
+#   If you want to force a specific VM:
+#
+#   - at the configure.in level, set JAVA=yourvm before calling
+#   AC_PROG_JAVA
+#
+#     (but after AC_INIT)
+#
+#   - at the configure level, setenv JAVA
+#
+#   You can use the JAVA variable in your Makefile.in, with @JAVA@.
+#
+#   *Warning*: its success or failure can depend on a proper setting of
+#   the CLASSPATH env. variable.
+#
+#   TODO: allow to exclude virtual machines (rationale: most Java
+#   programs cannot run with some VM like kaffe).
+#
+#   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.
+#
+#   A Web page, with a link to the latest CVS snapshot is at
+#   <http://www.internatif.org/bortzmeyer/autoconf-Java/>.
+#
+#   This is a sample configure.in Process this file with autoconf to
+#   produce a configure script.
+#
+#      AC_INIT(UnTag.java)
+#
+#      dnl Checks for programs.
+#      AC_CHECK_CLASSPATH
+#      AC_PROG_JAVAC
+#      AC_PROG_JAVA
+#
+#      dnl Checks for classes
+#      AC_CHECK_RQRD_CLASS(org.xml.sax.Parser)
+#      AC_CHECK_RQRD_CLASS(com.jclark.xml.sax.Driver)
+#
+#      AC_OUTPUT(Makefile)
+#
+# 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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_PROG_JAVA],[
+AC_REQUIRE([AC_EXEEXT])dnl
+if test x$JAVAPREFIX = x; then
+        test x$JAVA = x && AC_CHECK_PROGS(JAVA, kaffe$EXEEXT java$EXEEXT)
+else
+        test x$JAVA = x && AC_CHECK_PROGS(JAVA, kaffe$EXEEXT java$EXEEXT, $JAVAPREFIX)
+fi
+true
+AC_PROG_JAVA_WORKS
+AC_PROVIDE([$0])dnl
+])
diff --git a/m4/ac_prog_java_cc.m4 b/m4/ac_prog_java_cc.m4
new file mode 100644
index 00000000..df127856
--- /dev/null
+++ b/m4/ac_prog_java_cc.m4
@@ -0,0 +1,107 @@
+##### http://autoconf-archive.cryp.to/ac_prog_java_cc.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVA_CC
+#
+# DESCRIPTION
+#
+#   Finds the appropriate java compiler on your path. By preference the
+#   java compiler is gcj, then jikes then javac.
+#
+#   The macro can take one argument specifying a space separated list
+#   of java compiler names.
+#
+#   For example:
+#
+#     AC_PROG_JAVA_CC(javac, gcj)
+#
+#   The macro also sets the compiler options variable: JAVA_CC_OPTS to
+#   something sensible:
+#
+#    - for GCJ it sets it to: @GCJ_OPTS@
+#      (if GCJ_OPTS is not yet defined then it is set to "-C")
+#
+#    - no other compiler has applicable options yet
+#
+#   Here's an example configure.in:
+#
+#     AC_INIT(Makefile.in)
+#     AC_PROG_JAVA_CC()
+#     AC_OUTPUT(Makefile)
+#     dnl End.
+#
+#   And here's the start of the Makefile.in:
+#
+#     PROJECT_ROOT      := @srcdir@
+#     # Tool definitions.
+#     JAVAC             := @JAVA_CC@
+#     JAVAC_OPTS        := @JAVA_CC_OPTS@
+#     JAR_TOOL          := @jar_tool@
+#
+# LAST MODIFICATION
+#
+#   2002-03-04
+#
+# COPYLEFT
+#
+#   Copyright (c) 2002 Nic Ferrier <nferrier@tapsellferrier.co.uk>
+#
+#   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, 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_PROG_JAVA_CC([COMPILER ...])
+# --------------------------
+# COMPILER ... is a space separated list of java compilers to search for.
+# This just gives the user an opportunity to specify an alternative
+# search list for the java compiler.
+AC_DEFUN([AC_PROG_JAVA_CC],
+[AC_ARG_VAR([JAVA_CC],                [java compiler command])dnl
+AC_ARG_VAR([JAVA_CC_FLAGS],           [java compiler flags])dnl
+m4_ifval([$1],
+      [AC_CHECK_TOOLS(JAVA_CC, [$1])],
+[AC_CHECK_TOOL(JAVA_CC, gcj)
+if test -z "$JAVA_CC"; then
+  AC_CHECK_TOOL(JAVA_CC, javac)
+fi
+if test -z "$JAVA_CC"; then
+  AC_CHECK_TOOL(JAVA_CC, jikes)
+fi
+])
+
+if test "$JAVA_CC" = "gcj"; then
+   if test "$GCJ_OPTS" = ""; then
+      AC_SUBST(GCJ_OPTS,-C)
+   fi
+   AC_SUBST(JAVA_CC_OPTS, @GCJ_OPTS@,
+        [Define the compilation options for GCJ])
+fi
+true
+])# AC_PROG_JAVA_CC
diff --git a/m4/ac_prog_java_works.m4 b/m4/ac_prog_java_works.m4
new file mode 100644
index 00000000..e450c6c8
--- /dev/null
+++ b/m4/ac_prog_java_works.m4
@@ -0,0 +1,137 @@
+##### http://autoconf-archive.cryp.to/ac_prog_java_works.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVA_WORKS
+#
+# DESCRIPTION
+#
+#   Internal use ONLY.
+#
+#   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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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_PROG_JAVA_WORKS], [
+AC_CHECK_PROG(uudecode, uudecode$EXEEXT, yes)
+if test x$uudecode = xyes; then
+AC_CACHE_CHECK([if uudecode can decode base 64 file], ac_cv_prog_uudecode_base64, [
+dnl /**
+dnl  * Test.java: used to test if java compiler works.
+dnl  */
+dnl public class Test
+dnl {
+dnl
+dnl public static void
+dnl main( String[] argv )
+dnl {
+dnl     System.exit (0);
+dnl }
+dnl
+dnl }
+cat << \EOF > Test.uue
+begin-base64 644 Test.class
+yv66vgADAC0AFQcAAgEABFRlc3QHAAQBABBqYXZhL2xhbmcvT2JqZWN0AQAE
+bWFpbgEAFihbTGphdmEvbGFuZy9TdHJpbmc7KVYBAARDb2RlAQAPTGluZU51
+bWJlclRhYmxlDAAKAAsBAARleGl0AQAEKEkpVgoADQAJBwAOAQAQamF2YS9s
+YW5nL1N5c3RlbQEABjxpbml0PgEAAygpVgwADwAQCgADABEBAApTb3VyY2VG
+aWxlAQAJVGVzdC5qYXZhACEAAQADAAAAAAACAAkABQAGAAEABwAAACEAAQAB
+AAAABQO4AAyxAAAAAQAIAAAACgACAAAACgAEAAsAAQAPABAAAQAHAAAAIQAB
+AAEAAAAFKrcAErEAAAABAAgAAAAKAAIAAAAEAAQABAABABMAAAACABQ=
+====
+EOF
+if uudecode$EXEEXT Test.uue; then
+        ac_cv_prog_uudecode_base64=yes
+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])
+fi
+if test x$ac_cv_prog_uudecode_base64 != xyes; then
+        rm -f Test.class
+        AC_MSG_WARN([I have to compile Test.class from scratch])
+        if test x$ac_cv_prog_javac_works = xno; then
+true
+        fi
+        if test x$ac_cv_prog_javac_works = x; then
+                AC_PROG_JAVAC
+        fi
+fi
+AC_CACHE_CHECK(if $JAVA works, ac_cv_prog_java_works, [
+JAVA_TEST=Test.java
+CLASS_TEST=Test.class
+TEST=Test
+changequote(, )dnl
+cat << \EOF > $JAVA_TEST
+/* [#]line __oline__ "configure" */
+public class Test {
+public static void main (String args[]) {
+        System.exit (0);
+} }
+EOF
+changequote([, ])dnl
+if test x$ac_cv_prog_uudecode_base64 != xyes; then
+        if AC_TRY_COMMAND($JAVAC $JAVACFLAGS $JAVA_TEST) && test -s $CLASS_TEST; then
+                :
+        else
+          echo "configure: failed program was:" >&AC_FD_CC
+          cat $JAVA_TEST >&AC_FD_CC
+true
+        fi
+fi
+if AC_TRY_COMMAND($JAVA $JAVAFLAGS $TEST) >/dev/null 2>&1; then
+  ac_cv_prog_java_works=yes
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat $JAVA_TEST >&AC_FD_CC
+true
+fi
+rm -fr $JAVA_TEST $CLASS_TEST Test.uue
+])
+AC_PROVIDE([$0])dnl
+]
+)
diff --git a/m4/ac_prog_javac.m4 b/m4/ac_prog_javac.m4
new file mode 100644
index 00000000..630c3cfe
--- /dev/null
+++ b/m4/ac_prog_javac.m4
@@ -0,0 +1,84 @@
+##### http://autoconf-archive.cryp.to/ac_prog_javac.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVAC
+#
+# DESCRIPTION
+#
+#   AC_PROG_JAVAC tests an existing Java compiler. It uses the
+#   environment variable JAVAC then tests in sequence various common
+#   Java compilers. For political reasons, it starts with the free
+#   ones.
+#
+#   If you want to force a specific compiler:
+#
+#   - at the configure.in level, set JAVAC=yourcompiler before calling
+#   AC_PROG_JAVAC
+#
+#   - at the configure level, setenv JAVAC
+#
+#   You can use the JAVAC variable in your Makefile.in, with @JAVAC@.
+#
+#   *Warning*: its success or failure can depend on a proper setting of
+#   the CLASSPATH env. variable.
+#
+#   TODO: allow to exclude compilers (rationale: most Java programs
+#   cannot compile with some compilers like guavac).
+#
+#   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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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_PROG_JAVAC],[
+AC_REQUIRE([AC_EXEEXT])dnl
+if test "x$JAVAPREFIX" = x; then
+        test "x$JAVAC" = x && AC_CHECK_PROGS(JAVAC, "gcj$EXEEXT -C" jikes$EXEEXT guavac$EXEEXT javac$EXEEXT)
+else
+        test "x$JAVAC" = x && AC_CHECK_PROGS(JAVAC, "gcj$EXEEXT -C" jikes$EXEEXT guavac$EXEEXT javac$EXEEXT, $JAVAPREFIX)
+fi
+true
+AC_PROG_JAVAC_WORKS
+AC_PROVIDE([$0])dnl
+])
diff --git a/m4/ac_prog_javac_works.m4 b/m4/ac_prog_javac_works.m4
new file mode 100644
index 00000000..d3ceb5cc
--- /dev/null
+++ b/m4/ac_prog_javac_works.m4
@@ -0,0 +1,75 @@
+##### http://autoconf-archive.cryp.to/ac_prog_javac_works.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVAC_WORKS
+#
+# DESCRIPTION
+#
+#   Internal use ONLY.
+#
+#   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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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_PROG_JAVAC_WORKS],[
+AC_CACHE_CHECK([if $JAVAC works], ac_cv_prog_javac_works, [
+JAVA_TEST=Test.java
+CLASS_TEST=Test.class
+cat << \EOF > $JAVA_TEST
+/* [#]line __oline__ "configure" */
+public class Test {
+}
+EOF
+if AC_TRY_COMMAND($JAVAC $JAVACFLAGS $JAVA_TEST) >/dev/null 2>&1; then
+  ac_cv_prog_javac_works=yes
+else
+true
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat $JAVA_TEST >&AC_FD_CC
+fi
+rm -f $JAVA_TEST $CLASS_TEST
+])
+AC_PROVIDE([$0])dnl
+])
diff --git a/m4/ac_prog_javadoc.m4 b/m4/ac_prog_javadoc.m4
new file mode 100644
index 00000000..0920c559
--- /dev/null
+++ b/m4/ac_prog_javadoc.m4
@@ -0,0 +1,53 @@
+##### http://autoconf-archive.cryp.to/ac_prog_javadoc.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVADOC
+#
+# DESCRIPTION
+#
+#   AC_PROG_JAVADOC tests for an existing javadoc generator. It uses
+#   the environment variable JAVADOC then tests in sequence various
+#   common javadoc generator.
+#
+#   If you want to force a specific compiler:
+#
+#   - at the configure.in level, set JAVADOC=yourgenerator before
+#   calling AC_PROG_JAVADOC
+#
+#   - at the configure level, setenv JAVADOC
+#
+#   You can use the JAVADOC variable in your Makefile.in, with
+#   @JAVADOC@.
+#
+#   Note: This macro depends on the autoconf M4 macros for Java
+#   programs. It is VERY IMPORTANT that you download that whole set,
+#   some macros depend on other. Unfortunately, the autoconf archive
+#   does not support the concept of set of macros, so I had to break it
+#   for submission.
+#
+#   The general documentation of those macros, as well as the sample
+#   configure.in, is included in the AC_PROG_JAVA macro.
+#
+# LAST MODIFICATION
+#
+#   2000-07-19
+#
+# COPYLEFT
+#
+#   Copyright (c) 2000 Egon Willighagen <e.willighagen@science.ru.nl>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_PROG_JAVADOC],[
+AC_REQUIRE([AC_EXEEXT])dnl
+if test "x$JAVAPREFIX" = x; then
+        test "x$JAVADOC" = x && AC_CHECK_PROGS(JAVADOC, javadoc$EXEEXT)
+else
+        test "x$JAVADOC" = x && AC_CHECK_PROGS(JAVADOC, javadoc, $JAVAPREFIX)
+fi
+true
+AC_PROVIDE([$0])dnl
+])
diff --git a/m4/ac_prog_javah.m4 b/m4/ac_prog_javah.m4
new file mode 100644
index 00000000..6da77847
--- /dev/null
+++ b/m4/ac_prog_javah.m4
@@ -0,0 +1,43 @@
+##### http://autoconf-archive.cryp.to/ac_prog_javah.html
+#
+# SYNOPSIS
+#
+#   AC_PROG_JAVAH
+#
+# DESCRIPTION
+#
+#   AC_PROG_JAVAH tests the availability of the javah header generator
+#   and looks for the jni.h header file. If available, JAVAH is set to
+#   the full path of javah and CPPFLAGS is updated accordingly.
+#
+# LAST MODIFICATION
+#
+#   2002-03-25
+#
+# COPYLEFT
+#
+#   Copyright (c) 2002 Luc Maisonobe <luc@spaceroots.org>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_PROG_JAVAH],[
+AC_REQUIRE([AC_CANONICAL_SYSTEM])dnl
+AC_REQUIRE([AC_PROG_CPP])dnl
+test "x$JAVAH" = x && AC_CHECK_PROGS(JAVAH,gjavah gcjh javah)
+if test "x$JAVAH" != x ; then
+  AC_TRY_CPP([#include <jni.h>],,[
+    ac_save_CPPFLAGS="$CPPFLAGS"
+changequote(, )dnl
+    ac_dir=`echo $ac_cv_path_JAVAH | sed 's,\(.*\)/[^/]*/[^/]*$,\1/include,'`
+    ac_machdep=`echo $build_os | sed 's,[-0-9].*,,' | sed 's,cygwin,win32,'`
+changequote([, ])dnl
+    CPPFLAGS="$ac_save_CPPFLAGS -I$ac_dir -I$ac_dir/$ac_machdep"
+    AC_TRY_CPP([#include <jni.h>],
+               ac_save_CPPFLAGS="$CPPFLAGS",
+               AC_MSG_WARN([unable to include <jni.h>]))
+    CPPFLAGS="$ac_save_CPPFLAGS"])
+else
+true
+fi])
diff --git a/m4/ac_try_compile_java.m4 b/m4/ac_try_compile_java.m4
new file mode 100644
index 00000000..ab49aae5
--- /dev/null
+++ b/m4/ac_try_compile_java.m4
@@ -0,0 +1,53 @@
+##### http://autoconf-archive.cryp.to/ac_try_compile_java.html
+#
+# SYNOPSIS
+#
+#   AC_TRY_COMPILE_JAVA
+#
+# DESCRIPTION
+#
+#   AC_TRY_COMPILE_JAVA attempt to compile user given source.
+#
+#   *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 Devin Weaver <ktohg@tritarget.com>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_TRY_COMPILE_JAVA],[
+AC_REQUIRE([AC_PROG_JAVAC])dnl
+cat << \EOF > Test.java
+/* [#]line __oline__ "configure" */
+ifelse([$1], , , [import $1;])
+public class Test {
+[$2]
+}
+EOF
+if AC_TRY_COMMAND($JAVAC $JAVACFLAGS Test.java) && test -s Test.class
+then
+dnl Don't remove the temporary files here, so they can be examined.
+  ifelse([$3], , :, [$3])
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat Test.java >&AC_FD_CC
+ifelse([$4], , , [  rm -fr Test*
+  $4
+])dnl
+fi
+rm -fr Test*])
diff --git a/m4/ac_try_run_javac.m4 b/m4/ac_try_run_javac.m4
new file mode 100644
index 00000000..188c414a
--- /dev/null
+++ b/m4/ac_try_run_javac.m4
@@ -0,0 +1,54 @@
+##### http://autoconf-archive.cryp.to/ac_try_run_javac.html
+#
+# SYNOPSIS
+#
+#   AC_TRY_RUN_JAVA
+#
+# DESCRIPTION
+#
+#   AC_TRY_RUN_JAVA attempt to compile and run user given source.
+#
+#   *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 Devin Weaver <ktohg@tritarget.com>
+#
+#   Copying and distribution of this file, with or without
+#   modification, are permitted in any medium without royalty provided
+#   the copyright notice and this notice are preserved.
+
+AC_DEFUN([AC_TRY_RUN_JAVA],[
+AC_REQUIRE([AC_PROG_JAVAC])dnl
+AC_REQUIRE([AC_PROG_JAVA])dnl
+cat << \EOF > Test.java
+/* [#]line __oline__ "configure" */
+ifelse([$1], , , [include $1;])
+public class Test {
+[$2]
+}
+EOF
+if AC_TRY_COMMAND($JAVAC $JAVACFLAGS Test.java) && test -s Test.class && ($JAVA $JAVAFLAGS Test; exit) 2>/dev/null
+then
+dnl Don't remove the temporary files here, so they can be examined.
+  ifelse([$3], , :, [$3])
+else
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat Test.java >&AC_FD_CC
+ifelse([$4], , , [  rm -fr Test*
+  $4
+])dnl
+fi
+rm -fr Test*])
diff --git a/m4/as-compiler-flag.m4 b/m4/as-compiler-flag.m4
new file mode 100644
index 00000000..0f660cf0
--- /dev/null
+++ b/m4/as-compiler-flag.m4
@@ -0,0 +1,62 @@
+dnl as-compiler-flag.m4 0.1.0
+
+dnl autostars m4 macro for detection of compiler flags
+
+dnl David Schleef <ds@schleef.org>
+
+dnl $Id: as-compiler-flag.m4,v 1.1 2005/12/15 23:35:19 ds Exp $
+
+dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
+dnl Tries to compile with the given CFLAGS.
+dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
+dnl and ACTION-IF-NOT-ACCEPTED otherwise.
+
+AC_DEFUN([AS_COMPILER_FLAG],
+[
+  AC_MSG_CHECKING([to see if compiler understands $1])
+
+  save_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS $1"
+
+  AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
+  CFLAGS="$save_CFLAGS"
+
+  if test "X$flag_ok" = Xyes ; then
+    m4_ifvaln([$2],[$2])
+    true
+  else
+    m4_ifvaln([$3],[$3])
+    true
+  fi
+  AC_MSG_RESULT([$flag_ok])
+])
+
+dnl AS_COMPILER_FLAGS(VAR, FLAGS)
+dnl Tries to compile with the given CFLAGS.
+
+AC_DEFUN([AS_COMPILER_FLAGS],
+[
+  list=$2
+  flags_supported=""
+  flags_unsupported=""
+  AC_MSG_CHECKING([for supported compiler flags])
+  for each in $list
+  do
+    save_CFLAGS="$CFLAGS"
+    CFLAGS="$CFLAGS $each"
+    AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
+    CFLAGS="$save_CFLAGS"
+
+    if test "X$flag_ok" = Xyes ; then
+      flags_supported="$flags_supported $each"
+    else
+      flags_unsupported="$flags_unsupported $each"
+    fi
+  done
+  AC_MSG_RESULT([$flags_supported])
+  if test "X$flags_unsupported" != X ; then
+    AC_MSG_WARN([unsupported compiler flags: $flags_unsupported])
+  fi
+  $1="$$1 $flags_supported"
+])
+
diff --git a/m4/check.m4 b/m4/check.m4
new file mode 100644
index 00000000..a2e0812d
--- /dev/null
+++ b/m4/check.m4
@@ -0,0 +1,133 @@
+dnl AM_PATH_CHECK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for check, and define CHECK_CFLAGS and CHECK_LIBS
+dnl
+
+AC_DEFUN([AM_PATH_CHECK],
+[
+  AC_ARG_WITH(check,
+  [  --with-check=PATH       prefix where check is installed [default=auto]])
+ 
+  min_check_version=ifelse([$1], ,0.8.2,$1)
+
+  AC_MSG_CHECKING(for check - version >= $min_check_version)
+
+  if test x$with_check = xno; then
+    AC_MSG_RESULT(disabled)
+    ifelse([$3], , AC_MSG_ERROR([disabling check is not supported]), [$3])
+  else
+    if test "x$with_check" != x; then
+      CHECK_CFLAGS="-I$with_check/include"
+      CHECK_LIBS="-L$with_check/lib -lcheck"
+    else
+      CHECK_CFLAGS=""
+      CHECK_LIBS="-lcheck"
+    fi
+
+    ac_save_CFLAGS="$CFLAGS"
+    ac_save_LIBS="$LIBS"
+
+    CFLAGS="$CFLAGS $CHECK_CFLAGS"
+    LIBS="$CHECK_LIBS $LIBS"
+
+    rm -f conf.check-test
+    AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <check.h>
+
+int main ()
+{
+  int major, minor, micro;
+  char *tmp_version;
+
+  system ("touch conf.check-test");
+
+  /* HP/UX 9 (%@#!) writes to sscanf strings */
+  tmp_version = strdup("$min_check_version");
+  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     printf("%s, bad version string\n", "$min_check_version");
+     return 1;
+   }
+    
+  if ((CHECK_MAJOR_VERSION != check_major_version) ||
+      (CHECK_MINOR_VERSION != check_minor_version) ||
+      (CHECK_MICRO_VERSION != check_micro_version))
+    {
+      printf("\n*** The check header file (version %d.%d.%d) does not match\n",
+	     CHECK_MAJOR_VERSION, CHECK_MINOR_VERSION, CHECK_MICRO_VERSION);
+      printf("*** the check library (version %d.%d.%d).\n",
+	     check_major_version, check_minor_version, check_micro_version);
+      return 1;
+    }
+
+  if ((check_major_version > major) ||
+      ((check_major_version == major) && (check_minor_version > minor)) ||
+      ((check_major_version == major) && (check_minor_version == minor) && (check_micro_version >= micro)))
+    {
+      return 0;
+    }
+  else
+    {
+      printf("\n*** An old version of check (%d.%d.%d) was found.\n",
+             check_major_version, check_minor_version, check_micro_version);
+      printf("*** You need a version of check being at least %d.%d.%d.\n", major, minor, micro);
+      printf("***\n"); 
+      printf("*** If you have already installed a sufficiently new version, this error\n");
+      printf("*** probably means that the wrong copy of the check library and header\n");
+      printf("*** file is being found. Rerun configure with the --with-check=PATH option\n");
+      printf("*** to specify the prefix where the correct version was installed.\n");
+    }
+
+  return 1;
+}
+],, no_check=yes, [echo $ac_n "cross compiling; assumed OK... $ac_c"])
+
+    CFLAGS="$ac_save_CFLAGS"
+    LIBS="$ac_save_LIBS"
+
+    if test "x$no_check" = x ; then
+      AC_MSG_RESULT(yes)
+      ifelse([$2], , :, [$2])
+    else
+      AC_MSG_RESULT(no)
+      if test -f conf.check-test ; then
+        :
+      else
+        echo "*** Could not run check test program, checking why..."
+        CFLAGS="$CFLAGS $CHECK_CFLAGS"
+        LIBS="$CHECK_LIBS $LIBS"
+        AC_TRY_LINK([
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <check.h>
+], ,  [ echo "*** The test program compiled, but did not run. This usually means"
+        echo "*** that the run-time linker is not finding check. You'll need to set your"
+        echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+        echo "*** to the installed location  Also, make sure you have run ldconfig if that"
+        echo "*** is required on your system"
+	echo "***"
+        echo "*** If you have an old version installed, it is best to remove it, although"
+        echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
+      [ echo "*** The test program failed to compile or link. See the file config.log for"
+        echo "*** the exact error that occured." ])
+      
+        CFLAGS="$ac_save_CFLAGS"
+        LIBS="$ac_save_LIBS"
+      fi
+
+      CHECK_CFLAGS=""
+      CHECK_LIBS=""
+
+      rm -f conf.check-test
+      ifelse([$3], , AC_MSG_ERROR([check not found]), [$3])
+    fi
+
+    AC_SUBST(CHECK_CFLAGS)
+    AC_SUBST(CHECK_LIBS)
+
+    rm -f conf.check-test
+
+  fi
+])
diff --git a/m4/dps_java_check_class.m4 b/m4/dps_java_check_class.m4
new file mode 100644
index 00000000..a86d6416
--- /dev/null
+++ b/m4/dps_java_check_class.m4
@@ -0,0 +1,89 @@
+##### http://autoconf-archive.cryp.to/dps_java_check_class.html
+#
+# SYNOPSIS
+#
+#   DPS_JAVA_CHECK_CLASS(<class>,<action-if-found>,<action-if-not-found>)
+#
+# DESCRIPTION
+#
+#   Test if a Java class is available. Based on AC_PROG_JAVAC_WORKS.
+#   This version uses a cache variable which is both compiler, options
+#   and classpath dependent (so if you switch from javac to gcj it
+#   correctly notices and redoes the test).
+#
+#   The macro tries to compile a minimal program importing <class>.
+#   Some newer compilers moan about the failure to use this but fail or
+#   produce a class file anyway. All moaing is sunk to /dev/null since
+#   I only wanted to know if the class could be imported. This is a
+#   recommended followup to DPS_CHECK_JAVA_PLUGIN with classpath
+#   appropriately adjusted.
+#
+# LAST MODIFICATION
+#
+#   2008-01-28
+#
+# COPYLEFT
+#
+#   Copyright (c) 2008 Duncan Simpson <dps@simpson.demon.co.uk>
+#
+#   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, 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([DPS_JAVA_CHECK_CLASS],[
+m4_define([cache_val],[m4_translit(dps_cv_have_java_class_$1, " ." ,"__")])
+if test "x$CLASSPATH" != "x"; then
+xtra=" with classpath ${CLASSPATH}"
+xopts=`echo ${CLASSPATH} | ${SED} 's/^ *://'`
+xopts="-classpath $xopts"
+else xtra=""; xopts=""; fi
+cache_var="cache_val"AS_TR_SH([_Jc_${JAVAC}_Cp_${CLASSPATH}])
+AC_CACHE_CHECK([if the $1 class is available$xtra], [$cache_var], [
+JAVA_TEST=Testing.java
+CLASS_TEST=Testing.class
+cat << \EOF > $JAVA_TEST
+/* [#]xline __oline__ "configure" */
+import $1;
+public class Testing {
+}
+EOF
+if AC_TRY_COMMAND($JAVAC $JAVACFLAGS $xopts $JAVA_TEST) >/dev/null 2>&1; then
+  eval "${cache_var}=yes"
+else
+  eval "${cache_var}=no"
+  echo "configure: failed program was:" >&AC_FD_CC
+  cat $JAVA_TEST >&AC_FD_CC
+fi
+rm -f $JAVA_TEST $CLASS_TEST
+])
+if eval 'test "x$'${cache_var}'" = "xyes"'; then
+$2
+true; else
+$3
+false; fi])
diff --git a/m4/dps_libgcj_jar.m4 b/m4/dps_libgcj_jar.m4
new file mode 100644
index 00000000..777cd5c6
--- /dev/null
+++ b/m4/dps_libgcj_jar.m4
@@ -0,0 +1,86 @@
+##### http://autoconf-archive.cryp.to/dps_libgcj_jar.html
+#
+# SYNOPSIS
+#
+#   DPS_LIBGCJ_JAR
+#
+# DESCRIPTION
+#
+#   Locate libgcj.jar so you can place it before everything else when
+#   using gcj.
+#
+# LAST MODIFICATION
+#
+#   2008-01-28
+#
+# COPYLEFT
+#
+#   Copyright (c) 2008 Duncan Simpson <dps@simpson.demon.co.uk>
+#
+#   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, 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([DPS_LIBGCJ_JAR],
+[
+AC_REQUIRE([AC_EXEEXT])
+AC_REQUIRE([AC_PROG_JAVAC])
+AC_REQUIRE([AC_PROG_FGREP])
+AC_CHECK_PROG(SED, sed)
+if test "x$SED" = "x"; then
+AC_MSG_WARN([sed not avaiable, so libgcj.jar test skipped])
+else
+AC_MSG_CHECKING([if $JAVAC is gcj]);
+jc=`eval "[echo x$JAVAC | $SED 's/^x.*\\/\\([^/]*\\)\$/x\\1/;s/^ *\\([^ ]*\\) .*$/\\1/;s/"$EXEEXT"$//']"`
+if test "x$jc" != "xxgcj"; then
+AC_MSG_RESULT(no)
+else
+AC_MSG_RESULT(yes)
+AC_MSG_CHECKING([libgcj.jar location])
+save_cp="$CLASSPATH";
+unset CLASSPATH;
+AC_MSG_CHECKING([gcj default classpath])
+cat << \EOF > Test.java
+/* [#]line __oline__ "configure" */
+public class Test {
+}
+EOF
+lgcj=`eval "[$JAVAC -v -C Test.java 2>&1 | $FGREP \\(system\\) | $SED 's/^ *\\([^ ]*\\) .*$/\\1/;s/\\.jar\\//.jar/']"`;
+if test -f Test.class && test "x$lgcj" != "x"; then
+AC_MSG_RESULT($lgcj)
+$1="$lgcj:"
+else
+AC_MSG_RESULT(failed)
+$1=""
+fi
+if test "x$save_cp" != "x"; then CLASSPATH="$save_cp"; fi
+rm -f Test.java Test.class
+fi
+fi
+])
diff --git a/m4/dps_xtra_classpath.m4 b/m4/dps_xtra_classpath.m4
new file mode 100644
index 00000000..83cc37e8
--- /dev/null
+++ b/m4/dps_xtra_classpath.m4
@@ -0,0 +1,71 @@
+##### http://autoconf-archive.cryp.to/dps_xtra_classpath.html
+#
+# SYNOPSIS
+#
+#   DPS_XTRA_CLASSPATH(<classpath>,<class>,<jarfile>,<action-if-found>,<action-if-not-found>)
+#
+# DESCRIPTION
+#
+#   Set $1 to extra classpath components required for class $2 found in
+#   a jar file in $3. If the class is found do $4 and otherwise do $5.
+#   Uses DPS_JAVA_CHECK_CLASS for testing whether a class is avialable
+#
+# LAST MODIFICATION
+#
+#   2008-01-28
+#
+# COPYLEFT
+#
+#   Copyright (c) 2008 Duncan Simpson <dps@simpson.demon.co.uk>
+#
+#   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, 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([DPS_XTRA_CLASSPATH],[
+AC_CHECK_PROG(SED, sed)
+DPS_JAVA_CHECK_CLASS([$2],[got="yes"],[got="no"])
+cpxtra=""; saved_cp="${CLASSPATH}";
+for jhome in `ls -dr /usr/share/java /usr/java/* /usr/local/java/* 2> /dev/null`; do
+for jdir in lib jre/lib . ; do
+for jfile in $3; do
+if test "x$got" != "xyes" && test -f "$jhome/$jdir/$jfile"; then
+CLASSPATH="${saved_cp}:$jhome/$jdir/$jfile"
+DPS_JAVA_CHECK_CLASS([$2],[got="yes"; cpxtra="$jhome/$jdir/$jfile:"],[got="no"])
+fi; done; done; done
+if test "x${saved_cp}" != "x"; then
+CLASSPATH="${saved_cp}"
+else unset CLASSPATH; fi
+if test "x$got" = "xyes"; then
+$1="$cpxtra"
+$4
+true; else
+$5
+false; fi
+])
diff --git a/m4/gtk-doc.m4 b/m4/gtk-doc.m4
new file mode 100644
index 00000000..bfdfa1da
--- /dev/null
+++ b/m4/gtk-doc.m4
@@ -0,0 +1,39 @@
+dnl -*- mode: autoconf -*-
+
+# serial 1
+
+dnl Usage:
+dnl   GTK_DOC_CHECK([minimum-gtk-doc-version])
+AC_DEFUN([GTK_DOC_CHECK],
+[
+  AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
+  AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
+  dnl for overriding the documentation installation directory
+  AC_ARG_WITH([html-dir],
+    AS_HELP_STRING([--with-html-dir=PATH], [path to installed docs]),,
+    [with_html_dir='${datadir}/gtk-doc/html'])
+  HTML_DIR="$with_html_dir"
+  AC_SUBST([HTML_DIR])
+
+  dnl enable/disable documentation building
+  AC_ARG_ENABLE([gtk-doc],
+    AS_HELP_STRING([--enable-gtk-doc],
+                   [use gtk-doc to build documentation [[default=no]]]),,
+    [enable_gtk_doc=no])
+
+  if test x$enable_gtk_doc = xyes; then
+    ifelse([$1],[],
+      [PKG_CHECK_EXISTS([gtk-doc],,
+                        AC_MSG_ERROR([gtk-doc not installed and --enable-gtk-doc requested]))],
+      [PKG_CHECK_EXISTS([gtk-doc >= $1],,
+                        AC_MSG_ERROR([You need to have gtk-doc >= $1 installed to build gtk-doc]))])
+  fi
+
+  AC_MSG_CHECKING([whether to build gtk-doc documentation])
+  AC_MSG_RESULT($enable_gtk_doc)
+
+  AC_PATH_PROGS(GTKDOC_CHECK,gtkdoc-check,)
+
+  AM_CONDITIONAL([ENABLE_GTK_DOC], [test x$enable_gtk_doc = xyes])
+  AM_CONDITIONAL([GTK_DOC_USE_LIBTOOL], [test -n "$LIBTOOL"])
+])