make-host-2.sh

   1 #!/bin/sh
   2 set -e
   3
   4 # This is a script to be run as part of make.sh. The only time you'd
   5 # want to run it by itself is if you're trying to cross-compile the
   6 # system or if you're doing some kind of troubleshooting.
   7
   8 # This software is part of the SBCL system. See the README file for
   9 # more information.
  10 #
  11 # This software is derived from the CMU CL system, which was
  12 # written at Carnegie Mellon University and released into the
  13 # public domain. The software is in the public domain and is
  14 # provided with absolutely no warranty. See the COPYING and CREDITS
  15 # files for more information.
  16
  17 echo //entering make-host-2.sh
  18
  19 LANG=C
  20 LC_ALL=C
  21 export LANG LC_ALL
  22
  23 # In some cases, a debugging build of the system will creates a core
  24 # file output/after-xc.core in the next step. In cases where it
  25 # doesn't, it's confusing and basically useless to have any old copies
  26 # lying around, so delete:
  27 rm -f output/after-xc.core
  28
  29 # In a fresh host Lisp invocation, load and run the cross-compiler to
  30 # create the target object files describing the target SBCL.
  31 #
  32 # (There are at least three advantages to running the cross-compiler in a
  33 # fresh host Lisp invocation instead of just using the same Lisp invocation
  34 # that we used to compile it:
  35 #   (1) It reduces the chance that the cross-compilation process
  36 #       inadvertently comes to depend on some weird compile-time
  37 #       side effect.
  38 #   (2) It reduces peak memory demand (because definitions wrapped in
  39 #       (EVAL-WHEN (:COMPILE-TOPLEVEL :EXECUTE) ..) aren't defined
  40 #       in the fresh image).
  41 #   (3) It makes it easier to jump in and retry a step when tweaking
  42 #       and experimenting with the bootstrap procedure.
  43 # Admittedly, these don't seem to be enormously important advantages, but
  44 # the only disadvantage seems to be the extra time required to reload
  45 # the fasl files into the new host Lisp, and that doesn't seem to be
  46 # an enormously important disadvantage, either.)
  47 echo //running cross-compiler to create target object files
  48 $SBCL_XC_HOST <<-'EOF'
  49
  50         ;;;
  51         ;;; Set up the cross-compiler.
  52         ;;;
  53         (setf *print-level* 5 *print-length* 5)
  54         (load "src/cold/shared.lisp")
  55         (in-package "SB-COLD")
  56         (setf *host-obj-prefix* "obj/from-host/"
  57               *target-obj-prefix* "obj/from-xc/")
  58         (load "src/cold/set-up-cold-packages.lisp")
  59         (load "src/cold/defun-load-or-cload-xcompiler.lisp")
  60         (load-or-cload-xcompiler #'host-load-stem)
  61         (defun proclaim-target-optimization ()
  62           (let ((debug (if (position :sb-show *shebang-features*) 2 1)))
  63             (sb-xc:proclaim
  64              `(optimize
  65                (compilation-speed 1)
  66                (debug ,debug)
  67                ;; CLISP's pretty-printer is fragile and tends to cause
  68                ;; stack corruption or fail internal assertions, as of
  69                ;; 2003-04-20; we therefore turn off as many notes as
  70                ;; possible.
  71                (sb!ext:inhibit-warnings #-clisp 2
  72                                         #+clisp 3)
  73                ;; SAFETY = SPEED (and < 3) should provide reasonable
  74                ;; safety, but might skip some unreasonably expensive
  75                ;; stuff (e.g. %DETECT-STACK-EXHAUSTION in sbcl-0.7.2).
  76                (safety 2)
  77                (space 1)
  78                (speed 2)
  79                (sb!c:insert-step-conditions 0)
  80                (sb!c::stack-allocate-dynamic-extent 3)))))
  81         (compile 'proclaim-target-optimization)
  82         (defun in-target-cross-compilation-mode (fun)
  83           "Call FUN with everything set up appropriately for cross-compiling
  84           a target file."
  85           (let (;; In order to increase microefficiency of the target Lisp,
  86                 ;; enable old CMU CL defined-function-types-never-change
  87                 ;; optimizations. (ANSI says users aren't supposed to
  88                 ;; redefine our functions anyway; and developers can
  89                 ;; fend for themselves.)
  90                 #!-sb-fluid (sb!ext:*derive-function-types* t)
  91                 ;; Let the target know that we're the cross-compiler.
  92                 (*features* (cons :sb-xc *features*))
  93                 ;; We need to tweak the readtable..
  94                 (*readtable* (copy-readtable)))
  95             ;; ..in order to make backquotes expand into target code
  96             ;; instead of host code.
  97             ;; FIXME: Isn't this now taken care of automatically by
  98             ;; toplevel forms in the xcompiler backq.lisp file?
  99             (set-macro-character #\` #'sb!impl::backquote-macro)
 100             (set-macro-character #\, #'sb!impl::comma-macro)
 101             ;; Control optimization policy.
 102             (proclaim-target-optimization)
 103             ;; Specify where target machinery lives.
 104             (with-additional-nickname ("SB-XC" "SB!XC")
 105               (funcall fun))))
 106         (compile 'in-target-cross-compilation-mode)
 107         (setf *target-compile-file* #'sb-xc:compile-file)
 108         (setf *target-assemble-file* #'sb!c:assemble-file)
 109         (setf *in-target-compilation-mode-fn*
 110               #'in-target-cross-compilation-mode)
 111
 112         ;;;
 113         ;;; Run the cross-compiler to produce cold fasl files.
 114         ;;;
 115         (load "src/cold/compile-cold-sbcl.lisp")
 116
 117         ;;;
 118         ;;; miscellaneous tidying up and saving results
 119         ;;;
 120         (let ((filename "output/object-filenames-for-genesis.lisp-expr"))
 121           (ensure-directories-exist filename :verbose t)
 122           (with-open-file (s filename :direction :output :if-exists :supersede)
 123             (write *target-object-file-names* :stream s :readably t)))
 124         ;; Let's check that the type system was reasonably sane. (It's
 125         ;; easy to spend a long time wandering around confused trying
 126         ;; to debug cold init if it wasn't.)
 127         (when (position :sb-test *shebang-features*)
 128           (load "tests/type.after-xc.lisp"))
 129         ;; If you're experimenting with the system under a
 130         ;; cross-compilation host which supports CMU-CL-style SAVE-LISP,
 131         ;; this can be a good time to run it. The resulting core isn't
 132         ;; used in the normal build, but can be handy for experimenting
 133         ;; with the system. (See slam.sh for an example.)
 134         (when (position :sb-after-xc-core *shebang-features*)
 135           #+cmu (ext:save-lisp "output/after-xc.core" :load-init-file nil)
 136           #+sbcl (sb-ext:save-lisp-and-die "output/after-xc.core")
 137           #+openmcl (ccl::save-application "output/after-xc.core")
 138           #+clisp (ext:saveinitmem "output/after-xc.core"))
 139         #+cmu (ext:quit)
 140         #+clisp (ext:quit)
 141         #+abcl (ext:quit)
 142         EOF
 143
 144 # Run GENESIS (again) in order to create cold-sbcl.core. (The first
 145 # time was before we ran the cross-compiler, in order to create the
 146 # header file which was needed in order to run gcc on the runtime
 147 # code.)
 148 sh make-genesis-2.sh