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.
#
# DO NOT EDIT
#
# make uses this file (Makefile) only, if there is no
# file named "makefile" (lower-case m) in the same directory.
# My only task is to generate the real makefile and call make again.
# Thereafter, I am no longer used and needed.
#
# MACOSX caveat:
# as filenames are not case sensitive (in a default setup),
# we cannot use the above trick. Therefore, this file is now named
# "Makefile.init", and you have to execute "make -f Makefile.init" to
# get the initial makefile. This is now also done by the toplevel CONFIG
# script.
.PHONY: run
run: makefile
$(MAKE) -f makefile
#only needed for the definition of $(TOP)
include Make.proto
makefile: mf
mf:
$(TOP)/rules/stmkmf