make-host-2.sh

   1 #!/bin/sh
   2
   3 # This is a script to be run as part of make.sh. The only time you'd
   4 # want to run it by itself is if you're trying to cross-compile the
   5 # system or if you're doing some kind of troubleshooting.
   6
   7 # This software is part of the SBCL system. See the README file for
   8 # more information.
   9 #
  10 # This software is derived from the CMU CL system, which was
  11 # written at Carnegie Mellon University and released into the
  12 # public domain. The software is in the public domain and is
  13 # provided with absolutely no warranty. See the COPYING and CREDITS
  14 # files for more information.
  15
  16 echo //entering make-host-2.sh
  17
  18 # In some cases, a debugging build of the system will creates a core
  19 # file output/after-xc.core in the next step. In cases where it
  20 # doesn't, it's confusing and basically useless to have any old copies
  21 # lying around, so delete:
  22 rm -f output/after-xc.core
  23
  24 # In a fresh host Lisp invocation, load and run the cross-compiler to
  25 # create the target object files describing the target SBCL.
  26 #
  27 # (There are at least three advantages to running the cross-compiler in a
  28 # fresh host Lisp invocation instead of just using the same Lisp invocation
  29 # that we used to compile it:
  30 #   (1) It reduces the chance that the cross-compilation process
  31 #       inadvertently comes to depend on some weird compile-time
  32 #       side-effect.
  33 #   (2) It reduces peak memory demand (because definitions wrapped in
  34 #       (EVAL-WHEN (:COMPILE-TOPLEVEL :EXECUTE) ..) aren't defined
  35 #       in the fresh image).
  36 #   (3) It makes it easier to jump in and retry a step when tweaking
  37 #       and experimenting with the bootstrap procedure.
  38 # Admittedly, these don't seem to be enormously important advantages, but
  39 # the only disadvantage seems to be the extra time required to reload
  40 # the fasl files into the new host Lisp, and that doesn't seem to be
  41 # an enormously important disadvantage, either.)
  42 echo //running cross-compiler to create target object files
  43 $SBCL_XC_HOST <<-'EOF' || exit 1
  44         (setf *print-level* 5 *print-length* 5)
  45         (load "src/cold/shared.lisp")
  46         (in-package "SB-COLD")
  47         (setf *host-obj-prefix* "obj/from-host/"
  48               *target-obj-prefix* "obj/from-xc/")
  49         (load "src/cold/set-up-cold-packages.lisp")
  50         (load "src/cold/defun-load-or-cload-xcompiler.lisp")
  51         (load-or-cload-xcompiler #'host-load-stem)
  52         (defun proclaim-target-optimization ()
  53           (let ((debug (if (position :sb-show *shebang-features*) 2 1)))
  54             (sb-xc:proclaim `(optimize (compilation-speed 1)
  55                                        (debug ,debug)
  56                                        (sb!ext:inhibit-warnings 2)
  57                                        (safety 3)
  58                                        (space 1)
  59                                        (speed 2)))))
  60         (compile 'proclaim-target-optimization)
  61         (defun in-target-cross-compilation-mode (fn)
  62           "Call FN with everything set up appropriately for cross-compiling
  63           a target file."
  64           (let (;; Life is simpler at genesis/cold-load time if we
  65                 ;; needn't worry about byte-compiled code.
  66                 (sb!ext:*byte-compile-top-level* nil)
  67                 ;; In order to increase microefficiency of the target Lisp,
  68                 ;; enable old CMU CL defined-function-types-never-change
  69                 ;; optimizations. (ANSI says users aren't supposed to
  70                 ;; redefine our functions anyway; and developers can
  71                 ;; fend for themselves.)
  72                 #!-sb-fluid (sb!ext:*derive-function-types* t)
  73                 ;; FIXME: *TOP-LEVEL-LAMBDA-MAX* should go away altogether.
  74                 (sb!c::*top-level-lambda-max* 1)
  75                 ;; Let the target know that we're the cross-compiler.
  76                 (*features* (cons :sb-xc *features*))
  77                 ;; We need to tweak the readtable..
  78                 (*readtable* (copy-readtable)))
  79             ;; ..in order to make backquotes expand into target code
  80             ;; instead of host code.
  81             ;; FIXME: Isn't this now taken care of automatically by
  82             ;; toplevel forms in the xcompiler backq.lisp file?
  83             (set-macro-character #\` #'sb!impl::backquote-macro)
  84             (set-macro-character #\, #'sb!impl::comma-macro)
  85             ;; Control optimization policy.
  86             (proclaim-target-optimization)
  87             ;; Specify where target machinery lives.
  88             (with-additional-nickname ("SB-XC" "SB!XC")
  89               (funcall fn))))
  90         (compile 'in-target-cross-compilation-mode)
  91         (setf *target-compile-file* 'sb-xc:compile-file)
  92         (setf *target-assemble-file* 'sb!c:assemble-file)
  93         (setf *in-target-compilation-mode-fn*
  94               #'in-target-cross-compilation-mode)
  95         (load "src/cold/compile-cold-sbcl.lisp")
  96         (let ((filename "output/object-filenames-for-genesis.lisp-expr"))
  97           (ensure-directories-exist filename :verbose t)
  98           (with-open-file (s filename :direction :output)
  99             (write *target-object-file-names* :stream s :readably t)))
 100         ;; Let's check that the type system was reasonably sane. (It's
 101         ;; easy to spend a long time wandering around confused trying
 102         ;; to debug cold init if it wasn't.)
 103         (when (position :sb-test *shebang-features*)
 104           (load "tests/type.after-xc.lisp"))
 105         ;; If you're experimenting with the system under a
 106         ;; cross-compilation host which supports CMU-CL-style SAVE-LISP,
 107         ;; this can be a good time to run it. The resulting core isn't
 108         ;; used in the normal build, but can be handy for experimenting
 109         ;; with the system. (See slam.sh for an example.)
 110         (when (position :sb-after-xc-core *shebang-features*)
 111           #+cmu (ext:save-lisp "output/after-xc.core" :load-init-file nil)
 112           #+sbcl (sb-ext:save-lisp-and-die "output/after-xc.core")
 113           )
 114         EOF
 115
 116 # Run GENESIS (again) in order to create cold-sbcl.core. (The first
 117 # time was before we ran the cross-compiler, in order to create the
 118 # header file which was needed in order to run gcc on the runtime
 119 # code.)
 120 sh make-genesis-2.sh