#!/bin/sh

# This is a script to be run as part of make.sh. The only time you'd
# want to run it by itself is if you're trying to cross-compile the
# system or if you're doing some kind of troubleshooting.

# This software is part of the SBCL system. See the README file for
# more information.
#
# This software is derived from the CMU CL system, which was
# written at Carnegie Mellon University and released into the
# public domain. The software is in the public domain and is
# provided with absolutely no warranty. See the COPYING and CREDITS
# files for more information.

echo //entering make-genesis-2.sh

# In a fresh host Lisp invocation, load the cross-compiler (in order
# to get various definitions that GENESIS needs, not in order to
# cross-compile GENESIS, then load and run GENESIS. (We use a fresh
# host Lisp invocation here for basically the same reasons we did
# before when loading and running the cross-compiler.)
#
# (Why do we need this second invocation of GENESIS? In order to
# create a .core file, as opposed to just a .h file, GENESIS needs
# symbol table data on the C runtime. And we can get that symbol
# data only after the C runtime has been built. Therefore, even
# though we ran GENESIS earlier, we couldn't get it to make a .core
# file at that time; but we needed to run it earlier in order to 
# get to where we can write a .core file.)
echo //loading and running GENESIS to create cold-sbcl.core
$SBCL_XC_HOST <<-'EOF' || exit 1
	(setf *print-level* 5 *print-length* 5)
	(load "src/cold/shared.lisp")
	(in-package "SB-COLD")
	(setf *host-obj-prefix* "obj/from-host/"
	      *target-obj-prefix* "obj/from-xc/")
	(load "src/cold/set-up-cold-packages.lisp")
	(load "src/cold/defun-load-or-cload-xcompiler.lisp")
	(load-or-cload-xcompiler #'host-load-stem)
	(defparameter *target-object-file-names*
	  (with-open-file (s "output/object-filenames-for-genesis.lisp-expr"
	                     :direction :input)
	    (read s)))
	(host-load-stem "src/compiler/generic/genesis")
	(sb!vm:genesis :object-file-names *target-object-file-names*
		       :c-header-file-name "output/sbcl2.h"
		       :symbol-table-file-name "src/runtime/sbcl.nm"
		       :core-file-name "output/cold-sbcl.core"
		       ;; The map file is not needed by the system, but can
		       ;; be very handy when debugging cold init problems.
		       :map-file-name "output/cold-sbcl.map")
	EOF

echo //testing for consistency of first and second GENESIS passes
if cmp src/runtime/sbcl.h output/sbcl2.h; then
    echo //sbcl2.h matches sbcl.h -- good.
else
    echo error: sbcl2.h does not match sbcl.h.
    exit 1
fi