1 ;;;; stuff which is not specific to any particular build phase, but
2 ;;;; used by most of them
4 ;;;; Note: It's specifically not used when bootstrapping PCL, because
5 ;;;; we do SAVE-LISP after that, and we don't want to save extraneous
6 ;;;; bootstrapping machinery into the frozen image which will
7 ;;;; subsequently be used as the mother of all Lisp sessions.
9 ;;;; This software is part of the SBCL system. See the README file for
10 ;;;; more information.
12 ;;;; This software is derived from the CMU CL system, which was
13 ;;;; written at Carnegie Mellon University and released into the
14 ;;;; public domain. The software is in the public domain and is
15 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
16 ;;;; files for more information.
18 ;;; SB-COLD holds stuff used to build the initial SBCL core file
19 ;;; (including not only the final construction of the core file, but
20 ;;; also the preliminary steps like e.g. building the cross-compiler
21 ;;; and running the cross-compiler to produce target FASL files).
22 (defpackage "SB-COLD" (:use "CL"))
24 (in-package "SB-COLD")
26 ;;; prefixes for filename stems when cross-compiling. These are quite arbitrary
27 ;;; (although of course they shouldn't collide with anything we don't want to
28 ;;; write over). In particular, they can be either relative path names (e.g.
29 ;;; "host-objects/" or absolute pathnames (e.g. "/tmp/sbcl-xc-host-objects/").
31 ;;; The cross-compilation process will force the creation of these directories
32 ;;; by executing CL:ENSURE-DIRECTORIES-EXIST (on the xc host Common Lisp).
33 (defvar *host-obj-prefix*)
34 (defvar *target-obj-prefix*)
36 ;;; suffixes for filename stems when cross-compiling
37 (defvar *host-obj-suffix*
39 ;; On some xc hosts, it's impossible to LOAD a fasl file unless it
40 ;; has the same extension that the host uses for COMPILE-FILE
41 ;; output, so we have to be careful to use the xc host's preferred
44 ;; FIXME: This is a little ugly and annoying to maintain. And
45 ;; there's very likely some way to rearrange the build process so
46 ;; that we never explicitly refer to host object file suffixes,
47 ;; only to the result of CL:COMPILE-FILE-PATHNAME.
48 #+lispworks ".ufsl" ; as per Lieven Marchand sbcl-devel 2002-02-01
50 ;; On most xc hosts, any old extension works, so we use an
53 (defvar *target-obj-suffix*
54 ;; Target fasl files are LOADed (actually only quasi-LOADed, in
55 ;; GENESIS) only by SBCL code, and it doesn't care about particular
56 ;; extensions, so we can use something arbitrary.
59 ;;; a function of one functional argument, which calls its functional argument
60 ;;; in an environment suitable for compiling the target. (This environment
61 ;;; includes e.g. a suitable *FEATURES* value.)
62 (declaim (type function *in-target-compilation-mode-fn*))
63 (defvar *in-target-compilation-mode-fn*)
65 ;;; a function with the same calling convention as CL:COMPILE-FILE, to be
66 ;;; used to translate ordinary Lisp source files into target object files
67 (declaim (type function *target-compile-file*))
68 (defvar *target-compile-file*)
70 ;;; designator for a function with the same calling convention as
71 ;;; SB-C:ASSEMBLE-FILE, to be used to translate assembly files into target
73 (defvar *target-assemble-file*)
77 ;;; Take the file named X and make it into a file named Y. Sorta like
78 ;;; UNIX, and unlike Common Lisp's bare RENAME-FILE, we don't allow
79 ;;; information from the original filename to influence the final
80 ;;; filename. (The reason that it's only sorta like UNIX is that in
81 ;;; UNIX "mv foo bar/" will work, but the analogous
82 ;;; (RENAME-FILE-A-LA-UNIX "foo" "bar/") should fail.)
84 ;;; (This is a workaround for the weird behavior of Debian CMU CL
85 ;;; 2.4.6, where (RENAME-FILE "dir/x" "dir/y") tries to create a file
86 ;;; called "dir/dir/y". If that behavior goes away, then we should be
87 ;;; able to get rid of this function and use plain RENAME-FILE in the
88 ;;; COMPILE-STEM function above. -- WHN 19990321
89 (defun rename-file-a-la-unix (x y)
91 (let ((path ;; (Note that the TRUENAME expression here is lifted from an
92 ;; example in the ANSI spec for TRUENAME.)
93 (with-open-file (stream y :direction :output)
95 ;; From the ANSI spec: "In this case, the file is closed
96 ;; when the truename is tried, so the truename
97 ;; information is reliable."
100 (rename-file x path)))
101 (compile 'rename-file-a-la-unix)
103 ;;; a wrapper for compilation/assembly, used mostly to centralize
104 ;;; the procedure for finding full filenames from "stems"
106 ;;; Compile the source file whose basic name is STEM, using some
107 ;;; standard-for-the-SBCL-build-process procedures to generate the
108 ;;; full pathnames of source file and object file. Return the pathname
109 ;;; of the object file for STEM. Several &KEY arguments are accepted:
110 ;;; :SRC-PREFIX, :SRC-SUFFIX =
111 ;;; strings to be concatenated to STEM to produce source filename
112 ;;; :OBJ-PREFIX, :OBJ-SUFFIX =
113 ;;; strings to be concatenated to STEM to produce object filename
114 ;;; :TMP-OBJ-SUFFIX-SUFFIX =
115 ;;; string to be appended to the name of an object file to produce
116 ;;; the name of a temporary object file
117 ;;; :COMPILE-FILE, :IGNORE-FAILURE-P =
118 ;;; :COMPILE-FILE is a function to use for compiling the file
119 ;;; (with the same calling conventions as ANSI CL:COMPILE-FILE).
120 ;;; If the third return value (FAILURE-P) of this function is
121 ;;; true, a continuable error will be signalled, unless
122 ;;; :IGNORE-FAILURE-P is set, in which case only a warning will be
124 (defun compile-stem (stem
127 (obj-suffix (error "missing OBJ-SUFFIX"))
128 (tmp-obj-suffix-suffix "-tmp")
131 (compile-file #'compile-file)
134 (declare (type function compile-file))
136 (let* (;; KLUDGE: Note that this CONCATENATE 'STRING stuff is not The Common
137 ;; Lisp Way, although it works just fine for common UNIX environments.
138 ;; Should it come to pass that the system is ported to environments
139 ;; where version numbers and so forth become an issue, it might become
140 ;; urgent to rewrite this using the fancy Common Lisp PATHNAME
141 ;; machinery instead of just using strings. In the absence of such a
142 ;; port, it might or might be a good idea to do the rewrite.
144 (src (concatenate 'string src-prefix stem src-suffix))
145 (obj (concatenate 'string obj-prefix stem obj-suffix))
146 (tmp-obj (concatenate 'string obj tmp-obj-suffix-suffix)))
148 (ensure-directories-exist obj :verbose t)
150 ;; We're about to set about building a new object file. First, we
151 ;; delete any preexisting object file in order to avoid confusing
152 ;; ourselves later should we happen to bail out of compilation
154 (when (probe-file obj)
159 ;; Work around a bug in CLISP 1999-01-08 #'COMPILE-FILE: CLISP
160 ;; mangles relative pathnames passed as :OUTPUT-FILE arguments,
161 ;; but works OK with absolute pathnames.
163 ;; following discussion on cmucl-imp 2002-07
164 ;; "COMPILE-FILE-PATHNAME", it would seem safer to deal with
165 ;; absolute pathnames all the time; it is no longer clear that the
166 ;; original behaviour in CLISP was wrong or that the current
167 ;; behaviour is right; and in any case absolutifying the pathname
168 ;; insulates us against changes of behaviour. -- CSR, 2002-08-09
170 ;; (Note that this idiom is taken from the ANSI
171 ;; documentation for TRUENAME.)
172 (with-open-file (stream tmp-obj :direction :output)
175 ;; and some compilers (e.g. OpenMCL) will complain if they're
176 ;; asked to write over a file that exists already (and isn't
177 ;; recognizeably a fasl file), so
178 (when (probe-file tmp-obj)
179 (delete-file tmp-obj))
181 ;; Try to use the compiler to generate a new temporary object file.
182 (flet ((report-recompile-restart (stream)
183 (format stream "Recompile file ~S" src))
184 (report-continue-restart (stream)
185 (format stream "Continue, using possibly bogus file ~S" obj)))
188 (multiple-value-bind (output-truename warnings-p failure-p)
189 (funcall compile-file src :output-file tmp-obj)
190 (declare (ignore warnings-p))
191 (cond ((not output-truename)
192 (error "couldn't compile ~S" src))
195 (warn "ignoring FAILURE-P return value from compilation of ~S"
199 (error "FAILURE-P was set when creating ~S."
202 :report report-recompile-restart
203 (go retry-compile-file))
205 :report report-continue-restart
206 (setf failure-p nil)))
207 ;; Don't leave failed object files lying around.
208 (when (and failure-p (probe-file tmp-obj))
209 (delete-file tmp-obj)
210 (format t "~&deleted ~S~%" tmp-obj)))))
211 ;; Otherwise: success, just fall through.
214 ;; If we get to here, compilation succeeded, so it's OK to rename
215 ;; the temporary output file to the permanent object file.
216 (rename-file-a-la-unix tmp-obj obj)
218 ;; nice friendly traditional return value
220 (compile 'compile-stem)
222 ;;; other miscellaneous tools
223 (load "src/cold/read-from-file.lisp")
224 (load "src/cold/rename-package-carefully.lisp")
225 (load "src/cold/with-stuff.lisp")
227 ;;; Try to minimize/conceal any non-standardness of the host Common Lisp.
228 (load "src/cold/ansify.lisp")
230 ;;;; special read-macros for building the cold system (and even for
231 ;;;; building some of our tools for building the cold system)
233 (load "src/cold/shebang.lisp")
235 ;;; When cross-compiling, the *FEATURES* set for the target Lisp is
236 ;;; not in general the same as the *FEATURES* set for the host Lisp.
237 ;;; In order to refer to target features specifically, we refer to
238 ;;; *SHEBANG-FEATURES* instead of *FEATURES*, and use the #!+ and #!-
239 ;;; readmacros instead of the ordinary #+ and #- readmacros.
240 (setf *shebang-features*
241 (let* ((default-features
242 (append (read-from-file "base-target-features.lisp-expr")
243 (read-from-file "local-target-features.lisp-expr")))
244 (customizer-file-name "customize-target-features.lisp")
245 (customizer (if (probe-file customizer-file-name)
247 (read-from-file customizer-file-name))
249 (funcall customizer default-features)))
250 (let ((*print-length* nil)
253 "target features *SHEBANG-FEATURES*=~@<~S~:>~%"
256 (defvar *shebang-backend-subfeatures*
257 (let* ((default-subfeatures nil)
258 (customizer-file-name "customize-backend-subfeatures.lisp")
259 (customizer (if (probe-file customizer-file-name)
261 (read-from-file customizer-file-name))
263 (funcall customizer default-subfeatures)))
264 (let ((*print-length* nil)
267 "target backend-subfeatures *SHEBANG-BACKEND-FEATURES*=~@<~S~:>~%"
268 *shebang-backend-subfeatures*))
270 ;;;; cold-init-related PACKAGE and SYMBOL tools
272 ;;; Once we're done with possibly ANSIfying the COMMON-LISP package,
273 ;;; it's probably a mistake if we change it (beyond changing the
274 ;;; values of special variables such as *** and +, anyway). Set up
275 ;;; machinery to warn us when/if we change it.
277 ;;; All code depending on this is itself dependent on #!+SB-SHOW.
280 (load "src/cold/snapshot.lisp")
281 (defvar *cl-snapshot* (take-snapshot "COMMON-LISP")))
283 ;;;; master list of source files and their properties
285 ;;; flags which can be used to describe properties of source files
287 *expected-stem-flags*
288 '(;; meaning: This file is not to be compiled when building the
289 ;; cross-compiler which runs on the host ANSI Lisp. ("not host
290 ;; code", i.e. does not execute on host -- but may still be
291 ;; cross-compiled by the host, so that it executes on the target)
293 ;; meaning: This file is not to be compiled as part of the target
294 ;; SBCL. ("not target code" -- but still presumably host code,
295 ;; used to support the cross-compilation process)
297 ;; meaning: This file is to be processed with the SBCL assembler,
298 ;; not COMPILE-FILE. (Note that this doesn't make sense unless
299 ;; :NOT-HOST is also set, since the SBCL assembler doesn't exist
300 ;; while the cross-compiler is being built in the host ANSI Lisp.)
302 ;; meaning: The #'COMPILE-STEM argument called :IGNORE-FAILURE-P
303 ;; should be true. (This is a KLUDGE: I'd like to get rid of it.
304 ;; For now, it exists so that compilation can proceed through the
305 ;; legacy warnings in src/compiler/x86/array.lisp, which I've
306 ;; never figured out but which were apparently acceptable in CMU
307 ;; CL. Eventually, it would be great to just get rid of all
308 ;; warnings and remove support for this flag. -- WHN 19990323)
311 (defparameter *stems-and-flags* (read-from-file "build-order.lisp-expr"))
313 (defmacro do-stems-and-flags ((stem flags) &body body)
314 (let ((stem-and-flags (gensym "STEM-AND-FLAGS-")))
315 `(dolist (,stem-and-flags *stems-and-flags*)
316 (let ((,stem (first ,stem-and-flags))
317 (,flags (rest ,stem-and-flags)))
320 ;;; Check for stupid typos in FLAGS list keywords.
321 (let ((stems (make-hash-table :test 'equal)))
322 (do-stems-and-flags (stem flags)
323 (if (gethash stem stems)
324 (error "duplicate stem ~S in *STEMS-AND-FLAGS*" stem)
325 (setf (gethash stem stems) t))
326 (let ((set-difference (set-difference flags *expected-stem-flags*)))
328 (error "found unexpected flag(s) in *STEMS-AND-FLAGS*: ~S"
331 ;;;; tools to compile SBCL sources to create the cross-compiler
333 ;;; Execute function FN in an environment appropriate for compiling the
334 ;;; cross-compiler's source code in the cross-compilation host.
335 (defun in-host-compilation-mode (fn)
336 (declare (type function fn))
337 (let ((*features* (cons :sb-xc-host *features*))
338 ;; the CROSS-FLOAT-INFINITY-KLUDGE, as documented in
339 ;; base-target-features.lisp-expr:
340 (*shebang-features* (set-difference *shebang-features*
341 '(:sb-propagate-float-type
342 :sb-propagate-fun-type))))
343 (with-additional-nickname ("SB-XC" "SB!XC")
345 (compile 'in-host-compilation-mode)
347 ;;; Process a file as source code for the cross-compiler, compiling it
348 ;;; (if necessary) in the appropriate environment, then loading it
349 ;;; into the cross-compilation host Common lisp.
350 (defun host-cload-stem (stem &key ignore-failure-p)
351 (let ((compiled-filename (in-host-compilation-mode
355 :obj-prefix *host-obj-prefix*
356 :obj-suffix *host-obj-suffix*
357 :compile-file #'cl:compile-file
358 :ignore-failure-p ignore-failure-p)))))
359 (load compiled-filename)))
360 (compile 'host-cload-stem)
362 ;;; like HOST-CLOAD-STEM, except that we don't bother to compile
363 (defun host-load-stem (stem &key ignore-failure-p)
364 (declare (ignore ignore-failure-p)) ; (It's only relevant when
365 ;; compiling.) KLUDGE: It's untidy to have the knowledge of how to
366 ;; construct complete filenames from stems in here as well as in
367 ;; COMPILE-STEM. It should probably be factored out somehow. -- WHN
369 (load (concatenate 'simple-string *host-obj-prefix* stem *host-obj-suffix*)))
370 (compile 'host-load-stem)
372 ;;;; tools to compile SBCL sources to create object files which will
373 ;;;; be used to create the target SBCL .core file
375 ;;; Run the cross-compiler on a file in the source directory tree to
376 ;;; produce a corresponding file in the target object directory tree.
377 (defun target-compile-stem (stem &key assem-p ignore-failure-p)
378 (funcall *in-target-compilation-mode-fn*
381 :obj-prefix *target-obj-prefix*
382 :obj-suffix *target-obj-suffix*
383 :ignore-failure-p ignore-failure-p
384 :compile-file (if assem-p
385 *target-assemble-file*
386 *target-compile-file*)))))
387 (compile 'target-compile-stem)
389 ;;; (This function is not used by the build process, but is intended
390 ;;; for interactive use when experimenting with the system. It runs
391 ;;; the cross-compiler on test files with arbitrary filenames, not
392 ;;; necessarily in the source tree, e.g. in "/tmp".)
393 (defun target-compile-file (filename)
394 (funcall *in-target-compilation-mode-fn*
396 (funcall *target-compile-file* filename))))
397 (compile 'target-compile-file)