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-# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_check_java_home.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AX_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.
-#
-# LICENSE
-#
-# Copyright (c) 2008 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, 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 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.
-
-#serial 6
-
-AU_ALIAS([AC_CHECK_JAVA_HOME], [AX_CHECK_JAVA_HOME])
-
-AC_DEFUN([AX_CHECK_JAVA_HOME],
-[AC_MSG_CHECKING([for JAVA_HOME])
-# We used a fake loop so that we can use "break" to exit when the result
-# is found.
-while true
-do
- # If the user defined JAVA_HOME, don't touch it.
- test "${JAVA_HOME+set}" = set && break
-
- # On Mac OS X 10.5 and following, run /usr/libexec/java_home to get
- # the value of JAVA_HOME to use.
- # (http://developer.apple.com/library/mac/#qa/qa2001/qa1170.html).
- JAVA_HOME=`/usr/libexec/java_home 2>/dev/null`
- test x"$JAVA_HOME" != x && break
-
- # See if we can find the java executable, and compute from there.
- TRY_JAVA_HOME=`ls -dr /usr/java/* 2> /dev/null | head -n 1`
- if test x$TRY_JAVA_HOME != x; then
- PATH=$PATH:$TRY_JAVA_HOME/bin
- fi
- AC_PATH_PROG([JAVA_PATH_NAME], [java])
- if test "x$JAVA_PATH_NAME" != x; then
- JAVA_HOME=`echo $JAVA_PATH_NAME | sed "s/\(.*\)[[/]]bin[[/]]java.*/\1/"`
- break
- fi
-
- AC_MSG_NOTICE([Could not compute JAVA_HOME])
- break
-done
-AC_MSG_RESULT([$JAVA_HOME])
-])