Update to work with the latest wxPython and to work with more shells. Also, get the script's directory

using $0 rather than relying on it to be run from the dir it lives in.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@47343 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

distrib/scripts/unix/unixbuild

@@ -1,8 +1,8 @@
 #!/bin/sh
 
-# you need to change this if you run from outside this dir. 
 if [ "$WXROOT" = "" ]; then
-  WXROOT=../../..
+  scriptDir="$(cd $(dirname $0);pwd)"
+  WXROOT=$scriptDir/../../..
 fi
 
 . $WXROOT/distrib/scripts/includes/configure_build.inc
@@ -32,13 +32,19 @@ for i in "$@"; do
     esac
 done
 
-OTHER_OPTS="--with-$PORT "
+if [ "$PORT" != "" ]; then
+    OTHER_OPTS="--with-$PORT "
+fi
 
 do_build
 
+if [ $? != 0 ]; then
+    exit $?
+fi
+
 make prefix=$INSTALLDIR install
 
-if [ "$WXPYTHON" == "1" ]; then
+if [ "$WXPYTHON" = "1" ]; then
     make -C contrib/src/gizmos prefix=$INSTALLDIR install
     make -C contrib/src/stc prefix=$INSTALLDIR install
 fi