Resolve symlinks as necessary to allow run-mozilla.sh to be called correctly.

Bug #57866 r=bryner a=asa

xpfe/bootstrap/mozilla

@@ -16,7 +16,7 @@
 # Reserved.
 #
 
-## $Id: mozilla,v 1.11 2001/11/03 05:05:47 seawood%netscape.com Exp $
+## $Id: mozilla,v 1.12 2002/03/05 08:43:53 seawood%netscape.com Exp $
 ## 
 ## Usage:
 ##
@@ -32,7 +32,43 @@
 #uncomment for debugging
 #set -x
 
-dist_bin=`dirname $0`
+#moz_libdir=@libdir@/mozilla
+
+# honor MOZILLA_FIVE_HOME if it's there
+if [ -n "$MOZILLA_FIVE_HOME" ] ; then
+  dist_bin="$MOZILLA_FIVE_HOME"
+elif [ -d "$moz_libdir" ]; then
+  dist_bin=$moz_libdir
+else
+  # Use run-mozilla.sh in the current dir if it exists
+  # If not, then start resolving symlinks until we find run-mozilla.sh
+  found=0
+  progname=$0
+  curdir=`dirname $progname`
+  here=`/bin/pwd`
+  until [ $found != 0 -a -L "$progname" ]; do    
+    run_moz="$curdir/run-mozilla.sh"
+    if [ -x $run_moz ]; then
+      dist_bin=$curdir
+      found=1
+    else
+      bn=`basename "$progname"`
+      cd `dirname "$progname"`
+      progname=`/bin/ls -l "$bn" |sed -e 's/^.* -> //' `
+      if [ ! -x "$progname" ]; then
+        break
+      fi
+      curdir=`dirname $progname`
+    fi
+  done
+  cd $here
+  if [ $found = 0 ]; then
+    echo "Cannot find mozilla runtime directory. Exiting."
+    exit 1
+  fi
+
+fi
+
 script_args=""
 moreargs=""
 debugging=0