build-aux/javaexec.sh.in

   1 #!/bin/sh
   2 # Execute a Java program.
   3
   4 # Copyright (C) 2001-2020 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 <https://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
  29 CONF_JAVA='@CONF_JAVA@'
  30 CONF_CLASSPATH='@CLASSPATH@'
  31 if 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 $CONF_JAVA "$@"
  41 else
  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
  70 fi