1#!/bin/sh
2# Execute a Java program.
3
4# Copyright (C) 2001-2012 Free Software Foundation, Inc.
5# Written by Bruno Haible <haible@clisp.cons.org>, 2001.
6#
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 3 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program.  If not, see <http://www.gnu.org/licenses/>.
19
20# This uses the same choices as javaexec.c, but instead of relying on the
21# environment settings at run time, it uses the environment variables
22# present at configuration time.
23#
24# This is a separate shell script, because it must be able to unset JAVA_HOME
25# in some cases, which a simple shell command cannot do.
26#
27# The extra CLASSPATH must have been set prior to calling this script.
28
29CONF_JAVA='@CONF_JAVA@'
30CONF_CLASSPATH='@CLASSPATH@'
31if test -n "@HAVE_JAVA_ENVVAR@"; then
32  # Combine given CLASSPATH and configured CLASSPATH.
33  if test -n "$CLASSPATH"; then
34    CLASSPATH="$CLASSPATH${CONF_CLASSPATH:+@CLASSPATH_SEPARATOR@$CONF_CLASSPATH}"
35  else
36    CLASSPATH="$CONF_CLASSPATH"
37  fi
38  export CLASSPATH
39  test -z "$JAVA_VERBOSE" || echo "$CONF_JAVA $@"
40  exec $CONF_JAVA "$@"
41else
42  unset JAVA_HOME
43  export CLASSPATH
44  if test -n "@HAVE_GIJ@"; then
45    # In this case, $CONF_JAVA is "gij".
46    test -z "$JAVA_VERBOSE" || echo "$CONF_JAVA $@"
47    exec $CONF_JAVA "$@"
48  else
49    if test -n "@HAVE_JAVA@"; then
50      # In this case, $CONF_JAVA is "java".
51      test -z "$JAVA_VERBOSE" || echo "$CONF_JAVA $@"
52      exec $CONF_JAVA "$@"
53    else
54      if test -n "@HAVE_JRE@"; then
55        # In this case, $CONF_JAVA is "jre".
56        test -z "$JAVA_VERBOSE" || echo "$CONF_JAVA $@"
57        exec $CONF_JAVA "$@"
58      else
59        if test -n "@HAVE_JVIEW@"; then
60          # In this case, $CONF_JAVA is "jview".
61          test -z "$JAVA_VERBOSE" || echo "$CONF_JAVA $@"
62          exec $CONF_JAVA "$@"
63        else
64          echo 'Java virtual machine not found, try installing gij or set $JAVA, then reconfigure' 1>&2
65          exit 1
66        fi
67      fi
68    fi
69  fi
70fi
71