Add support out-of-tree builds.
This commit adds a support for out-of-tree builds, i.e, object files,
executables and so on are writen to `$(OUTDIR)` (which defaults to
`build/<BUILD_TARGET>` directory.
This allows building Smalltalk/X from single source tree for multiple
targets.
"/ Encoding: iso8859-1
"/
"/ $Header$
"/
"/ MIMEType: application/x-smalltalk-source
"/
"/ ST/X startup command file:
"/
"/ example for a very simple startup file for standAlone applications
"/ this is read for standAlone apps, if no <commandName>.rc is found.
"/
"/ without an stxapp.rc, no display is opened and no setup of keyboardMap or viewStyle
"/ is performed - this still works correctly, but may be invonvenient for the
"/ user ...
[
Screen openDefaultDisplay:nil.
] on:Screen deviceOpenErrorSignal do:[:ex|
('smalltalk.rc [warning]: No Display connection to: ', ex parameter) errorPrintCR.
].
Display notNil ifTrue:[
Smalltalk fileIn:'display.rc'.
Smalltalk fileIn:'keyboard.rc'.
].
Smalltalk silentLoading:true.
!