tools/tinyos/misc/tos-locate-jre

   1 #!/bin/sh
   2 # This script attempts to locate the jre directory of the current
   3 # Java installation, even when java is not in the path
   4 # It works with  the following rpm files:
   5 #       Sun's Java Software Development Kit (Linux/Windows)
   6 #       Sun's Java Runtime Environment (Linux)
   7 #       IBM's Java Software Development Kit (linux)
   8
   9 # We require an option to specify which directory is desired:
  10 # --java: directory with java executable
  11 # --javac: directory with javac executable
  12 # --jni: directory where JNI code is placed
  13
  14 if [ "$1" = "--jni" ]; then
  15     jni=yes
  16 elif [ "$1" = "--java" ]; then
  17     java=yes
  18 elif [ "$1" = "--javac" ]; then
  19     javac=yes
  20 else
  21     echo "Usage: tos-locate-jre --java|--javac|--jni" >&2
  22     exit 2
  23 fi
  24
  25 rpmlocate () {
  26     javarpm=$1
  27     javapath=`rpm -ql $1 2>/dev/null | grep "bin/$2$"`
  28 }
  29
  30 pathlocate () {
  31     javapath=`which $1 2>/dev/null`
  32     while [ -n "$javapath" -a -h "$javapath" ]; do
  33         javapath=`readlink -q $javapath`
  34     done
  35     test -n "$javapath"
  36 }
  37
  38 case `uname` in
  39     CYGWIN*)
  40     # Hopefully this will always work on cygwin with Sun's Java
  41         jversion=`regtool -q -w get '\\HKLM\\SOFTWARE\\JavaSoft\\Java Development Kit\\CurrentVersion'`
  42     if [ $? != 0 ]; then
  43         exit 1
  44     fi
  45     jhome=`regtool -q get '\\HKLM\SOFTWARE\\JavaSoft\\Java Development Kit\\'$jversion'\\JavaHome'`
  46     if [ $? != 0 ]; then
  47         exit 1
  48     fi
  49     jhome=`cygpath -u "$jhome"`
  50     ;;
  51
  52     Darwin)
  53     #Just statically typed in, uses default location of installation for XTools.  May need to be fixed
  54     jhome=/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK
  55     ;;
  56
  57     Linux)
  58     # Check gentoo java configuration
  59     javapath=`java-config -c 2>/dev/null`
  60     # We check the path first, on the assumption that that's the preferred
  61     # version.
  62     if [ -z "$javapath" ]; then
  63         pathlocate javac || { test -z "$javac" && pathlocate java; }
  64     fi
  65     if [ -z "$javapath" ]; then
  66         # We try a bunch of standard names, before resorting to rpm -qa
  67         rpmlocate IBMJava2-SDK javac || \
  68             rpmlocate IBMJava2-142-ia32-SDK javac || \
  69             rpmlocate j2sdk javac || \
  70             rpmlocate jdk javac || \
  71             { test -z "$javac" && rpmlocate j2re java; } || \
  72             { test -z "$javac" && rpmlocate jre java; }
  73
  74         if [ -z "$javapath" ]; then
  75             # lastly, check for a weirdly named IBMJava2
  76             name=`rpm -qa | grep IBMJava2 | head -1`
  77             if [ -n "$name" ]; then
  78                 rpmlocate $name javac
  79             fi
  80         fi
  81     fi
  82     if [ -z "$javapath" ]; then
  83         exit 1
  84     fi
  85     jbin=`dirname "$javapath"`
  86     jhome=`dirname "$jbin"`
  87     ;;
  88
  89     FreeBSD)
  90     # We check the path first, on the assumption that that's the preferred
  91     # version.
  92     pathlocate javac || { test -z "$javac" && pathlocate java; }
  93     if [ -n "$javapath" ]; then
  94         jbin=`dirname "$javapath"`
  95     else
  96         if [ -f /usr/local/jdk1.4*/bin/java ]; then
  97             jbin=/usr/local/jdk1.4*/bin
  98         else
  99             exit 1
 100         fi
 101     fi
 102     jhome=`dirname $jbin`
 103     ;;
 104 esac
 105
 106 # These are correct for Sun and IBM's x86 Java versions
 107 if [ "$jni" = "yes" ]; then
 108     jnilocate () {
 109         dir="$1"
 110         test -d "$1"
 111     }
 112
 113     # Look for a likely JNI directory
 114     # Windows, and IBM Java: in jre/bin
 115     # Sun Java on Linux: in jre/lib/i386
 116     if [ `uname` = "Darwin" ]; then
 117         jnilocate "/Library/java/Extensions"
 118     elif "$jhome/bin/java" -version 2>&1 | grep -q IBM || cygpath -w / >/dev/null 2>/dev/null; then
 119         jnilocate "$jhome/jre/bin" || jnilocate "$jhome/bin"
 120     else
 121         arch=`uname -m`
 122         jnilocate "$jhome/jre/lib/$arch" || \
 123             jnilocate "$jhome/jre/lib/i386" || \
 124             jnilocate "$jhome/jre/lib/amd64" || \
 125             jnilocate "$jhome/lib/$arch" || \
 126             jnilocate "$jhome/lib/i386" || \
 127             jnilocate "$jhome/lib/amd64"
 128     fi
 129 elif [ "$javac" = "yes" ]; then
 130  if [ `uname` = "Darwin" ]; then
 131    dir="$jhome/Commands"
 132  else
 133    dir="$jhome/bin"
 134  fi
 135 elif [ "$java" = "yes" ]; then
 136  if [ `uname` = "Darwin" ]; then
 137    dir="$jhome/Commands"
 138  else
 139    dir="$jhome/bin"
 140  fi
 141 fi
 142
 143 # Check that what we found actually exists
 144 if [ -d "$dir" ]; then
 145  echo $dir
 146 else
 147  exit 1
 148 fi