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
49 #+(and openmcl (not darwin)) ".pfsl"
50 #+(and openmcl darwin) ".dfsl"
51 ;; On most xc hosts, any old extension works, so we use an
54 (defvar *target-obj-suffix*
55 ;; Target fasl files are LOADed (actually only quasi-LOADed, in
56 ;; GENESIS) only by SBCL code, and it doesn't care about particular
57 ;; extensions, so we can use something arbitrary.
60 ;;; a function of one functional argument, which calls its functional argument
61 ;;; in an environment suitable for compiling the target. (This environment
62 ;;; includes e.g. a suitable *FEATURES* value.)
63 (declaim (type function *in-target-compilation-mode-fn*))
64 (defvar *in-target-compilation-mode-fn*)
66 ;;; a function with the same calling convention as CL:COMPILE-FILE, to be
67 ;;; used to translate ordinary Lisp source files into target object files
68 (declaim (type function *target-compile-file*))
69 (defvar *target-compile-file*)
71 ;;; designator for a function with the same calling convention as
72 ;;; SB-C:ASSEMBLE-FILE, to be used to translate assembly files into target
74 (defvar *target-assemble-file*)
78 ;;; Take the file named X and make it into a file named Y. Sorta like
79 ;;; UNIX, and unlike Common Lisp's bare RENAME-FILE, we don't allow
80 ;;; information from the original filename to influence the final
81 ;;; filename. (The reason that it's only sorta like UNIX is that in
82 ;;; UNIX "mv foo bar/" will work, but the analogous
83 ;;; (RENAME-FILE-A-LA-UNIX "foo" "bar/") should fail.)
85 ;;; (This is a workaround for the weird behavior of Debian CMU CL
86 ;;; 2.4.6, where (RENAME-FILE "dir/x" "dir/y") tries to create a file
87 ;;; called "dir/dir/y". If that behavior goes away, then we should be
88 ;;; able to get rid of this function and use plain RENAME-FILE in the
89 ;;; COMPILE-STEM function above. -- WHN 19990321
90 (defun rename-file-a-la-unix (x y)
92 (let ((path ;; (Note that the TRUENAME expression here is lifted from an
93 ;; example in the ANSI spec for TRUENAME.)
94 (with-open-file (stream y :direction :output)
96 ;; From the ANSI spec: "In this case, the file is closed
97 ;; when the truename is tried, so the truename
98 ;; information is reliable."
101 (rename-file x path)))
102 (compile 'rename-file-a-la-unix)
104 ;;; a wrapper for compilation/assembly, used mostly to centralize
105 ;;; the procedure for finding full filenames from "stems"
107 ;;; Compile the source file whose basic name is STEM, using some
108 ;;; standard-for-the-SBCL-build-process procedures to generate the
109 ;;; full pathnames of source file and object file. Return the pathname
110 ;;; of the object file for STEM. Several &KEY arguments are accepted:
111 ;;; :SRC-PREFIX, :SRC-SUFFIX =
112 ;;; strings to be concatenated to STEM to produce source filename
113 ;;; :OBJ-PREFIX, :OBJ-SUFFIX =
114 ;;; strings to be concatenated to STEM to produce object filename
115 ;;; :TMP-OBJ-SUFFIX-SUFFIX =
116 ;;; string to be appended to the name of an object file to produce
117 ;;; the name of a temporary object file
118 ;;; :COMPILE-FILE, :IGNORE-FAILURE-P =
119 ;;; :COMPILE-FILE is a function to use for compiling the file
120 ;;; (with the same calling conventions as ANSI CL:COMPILE-FILE).
121 ;;; If the third return value (FAILURE-P) of this function is
122 ;;; true, a continuable error will be signalled, unless
123 ;;; :IGNORE-FAILURE-P is set, in which case only a warning will be
125 (defun compile-stem (stem
128 (obj-suffix (error "missing OBJ-SUFFIX"))
129 (tmp-obj-suffix-suffix "-tmp")
132 (compile-file #'compile-file)
135 (declare (type function compile-file))
137 (let* (;; KLUDGE: Note that this CONCATENATE 'STRING stuff is not The Common
138 ;; Lisp Way, although it works just fine for common UNIX environments.
139 ;; Should it come to pass that the system is ported to environments
140 ;; where version numbers and so forth become an issue, it might become
141 ;; urgent to rewrite this using the fancy Common Lisp PATHNAME
142 ;; machinery instead of just using strings. In the absence of such a
143 ;; port, it might or might be a good idea to do the rewrite.
145 (src (concatenate 'string src-prefix stem src-suffix))
146 (obj (concatenate 'string obj-prefix stem obj-suffix))
147 (tmp-obj (concatenate 'string obj tmp-obj-suffix-suffix)))
149 (ensure-directories-exist obj :verbose t)
151 ;; We're about to set about building a new object file. First, we
152 ;; delete any preexisting object file in order to avoid confusing
153 ;; ourselves later should we happen to bail out of compilation
155 (when (probe-file obj)
160 ;; Work around a bug in CLISP 1999-01-08 #'COMPILE-FILE: CLISP
161 ;; mangles relative pathnames passed as :OUTPUT-FILE arguments,
162 ;; but works OK with absolute pathnames.
164 ;; following discussion on cmucl-imp 2002-07
165 ;; "COMPILE-FILE-PATHNAME", it would seem safer to deal with
166 ;; absolute pathnames all the time; it is no longer clear that the
167 ;; original behaviour in CLISP was wrong or that the current
168 ;; behaviour is right; and in any case absolutifying the pathname
169 ;; insulates us against changes of behaviour. -- CSR, 2002-08-09
171 ;; (Note that this idiom is taken from the ANSI
172 ;; documentation for TRUENAME.)
173 (with-open-file (stream tmp-obj :direction :output)
176 ;; and some compilers (e.g. OpenMCL) will complain if they're
177 ;; asked to write over a file that exists already (and isn't
178 ;; recognizeably a fasl file), so
179 (when (probe-file tmp-obj)
180 (delete-file tmp-obj))
182 ;; Try to use the compiler to generate a new temporary object file.
183 (flet ((report-recompile-restart (stream)
184 (format stream "Recompile file ~S" src))
185 (report-continue-restart (stream)
186 (format stream "Continue, using possibly bogus file ~S" obj)))
189 (multiple-value-bind (output-truename warnings-p failure-p)
190 (funcall compile-file src :output-file tmp-obj)
191 (declare (ignore warnings-p))
192 (cond ((not output-truename)
193 (error "couldn't compile ~S" src))
196 (warn "ignoring FAILURE-P return value from compilation of ~S"
200 (error "FAILURE-P was set when creating ~S."
203 :report report-recompile-restart
204 (go retry-compile-file))
206 :report report-continue-restart
207 (setf failure-p nil)))
208 ;; Don't leave failed object files lying around.
209 (when (and failure-p (probe-file tmp-obj))
210 (delete-file tmp-obj)
211 (format t "~&deleted ~S~%" tmp-obj)))))
212 ;; Otherwise: success, just fall through.
215 ;; If we get to here, compilation succeeded, so it's OK to rename
216 ;; the temporary output file to the permanent object file.
217 (rename-file-a-la-unix tmp-obj obj)
219 ;; nice friendly traditional return value
221 (compile 'compile-stem)
223 ;;; other miscellaneous tools
224 (load "src/cold/read-from-file.lisp")
225 (load "src/cold/rename-package-carefully.lisp")
226 (load "src/cold/with-stuff.lisp")
228 ;;; Try to minimize/conceal any non-standardness of the host Common Lisp.
229 (load "src/cold/ansify.lisp")
231 ;;;; special read-macros for building the cold system (and even for
232 ;;;; building some of our tools for building the cold system)
234 (load "src/cold/shebang.lisp")
236 ;;; When cross-compiling, the *FEATURES* set for the target Lisp is
237 ;;; not in general the same as the *FEATURES* set for the host Lisp.
238 ;;; In order to refer to target features specifically, we refer to
239 ;;; *SHEBANG-FEATURES* instead of *FEATURES*, and use the #!+ and #!-
240 ;;; readmacros instead of the ordinary #+ and #- readmacros.
241 (setf *shebang-features*
242 (let* ((default-features
243 (append (read-from-file "base-target-features.lisp-expr")
244 (read-from-file "local-target-features.lisp-expr")))
245 (customizer-file-name "customize-target-features.lisp")
246 (customizer (if (probe-file customizer-file-name)
248 (read-from-file customizer-file-name))
250 (funcall customizer default-features)))
251 (let ((*print-length* nil)
254 "target features *SHEBANG-FEATURES*=~@<~S~:>~%"
257 (defvar *shebang-backend-subfeatures*
258 (let* ((default-subfeatures nil)
259 (customizer-file-name "customize-backend-subfeatures.lisp")
260 (customizer (if (probe-file customizer-file-name)
262 (read-from-file customizer-file-name))
264 (funcall customizer default-subfeatures)))
265 (let ((*print-length* nil)
268 "target backend-subfeatures *SHEBANG-BACKEND-FEATURES*=~@<~S~:>~%"
269 *shebang-backend-subfeatures*))
271 ;;;; cold-init-related PACKAGE and SYMBOL tools
273 ;;; Once we're done with possibly ANSIfying the COMMON-LISP package,
274 ;;; it's probably a mistake if we change it (beyond changing the
275 ;;; values of special variables such as *** and +, anyway). Set up
276 ;;; machinery to warn us when/if we change it.
278 ;;; All code depending on this is itself dependent on #!+SB-SHOW.
281 (load "src/cold/snapshot.lisp")
282 (defvar *cl-snapshot* (take-snapshot "COMMON-LISP")))
284 ;;;; master list of source files and their properties
286 ;;; flags which can be used to describe properties of source files
288 *expected-stem-flags*
289 '(;; meaning: This file is not to be compiled when building the
290 ;; cross-compiler which runs on the host ANSI Lisp. ("not host
291 ;; code", i.e. does not execute on host -- but may still be
292 ;; cross-compiled by the host, so that it executes on the target)
294 ;; meaning: This file is not to be compiled as part of the target
295 ;; SBCL. ("not target code" -- but still presumably host code,
296 ;; used to support the cross-compilation process)
298 ;; meaning: This file is to be processed with the SBCL assembler,
299 ;; not COMPILE-FILE. (Note that this doesn't make sense unless
300 ;; :NOT-HOST is also set, since the SBCL assembler doesn't exist
301 ;; while the cross-compiler is being built in the host ANSI Lisp.)
303 ;; meaning: The #'COMPILE-STEM argument called :IGNORE-FAILURE-P
304 ;; should be true. (This is a KLUDGE: I'd like to get rid of it.
305 ;; For now, it exists so that compilation can proceed through the
306 ;; legacy warnings in src/compiler/x86/array.lisp, which I've
307 ;; never figured out but which were apparently acceptable in CMU
308 ;; CL. Eventually, it would be great to just get rid of all
309 ;; warnings and remove support for this flag. -- WHN 19990323)
312 (defparameter *stems-and-flags* (read-from-file "build-order.lisp-expr"))
314 (defmacro do-stems-and-flags ((stem flags) &body body)
315 (let ((stem-and-flags (gensym "STEM-AND-FLAGS")))
316 `(dolist (,stem-and-flags *stems-and-flags*)
317 (let ((,stem (first ,stem-and-flags))
318 (,flags (rest ,stem-and-flags)))
321 ;;; Check for stupid typos in FLAGS list keywords.
322 (let ((stems (make-hash-table :test 'equal)))
323 (do-stems-and-flags (stem flags)
324 (if (gethash stem stems)
325 (error "duplicate stem ~S in *STEMS-AND-FLAGS*" stem)
326 (setf (gethash stem stems) t))
327 (let ((set-difference (set-difference flags *expected-stem-flags*)))
329 (error "found unexpected flag(s) in *STEMS-AND-FLAGS*: ~S"
332 ;;;; tools to compile SBCL sources to create the cross-compiler
334 ;;; Execute function FN in an environment appropriate for compiling the
335 ;;; cross-compiler's source code in the cross-compilation host.
336 (defun in-host-compilation-mode (fn)
337 (declare (type function fn))
338 (let ((*features* (cons :sb-xc-host *features*))
339 ;; the CROSS-FLOAT-INFINITY-KLUDGE, as documented in
340 ;; base-target-features.lisp-expr:
341 (*shebang-features* (set-difference *shebang-features*
342 '(:sb-propagate-float-type
343 :sb-propagate-fun-type))))
344 (with-additional-nickname ("SB-XC" "SB!XC")
346 (compile 'in-host-compilation-mode)
348 ;;; Process a file as source code for the cross-compiler, compiling it
349 ;;; (if necessary) in the appropriate environment, then loading it
350 ;;; into the cross-compilation host Common lisp.
351 (defun host-cload-stem (stem &key ignore-failure-p)
352 (let ((compiled-filename (in-host-compilation-mode
356 :obj-prefix *host-obj-prefix*
357 :obj-suffix *host-obj-suffix*
358 :compile-file #'cl:compile-file
359 :ignore-failure-p ignore-failure-p)))))
360 (load compiled-filename)))
361 (compile 'host-cload-stem)
363 ;;; like HOST-CLOAD-STEM, except that we don't bother to compile
364 (defun host-load-stem (stem &key ignore-failure-p)
365 (declare (ignore ignore-failure-p)) ; (It's only relevant when
366 ;; compiling.) KLUDGE: It's untidy to have the knowledge of how to
367 ;; construct complete filenames from stems in here as well as in
368 ;; COMPILE-STEM. It should probably be factored out somehow. -- WHN
370 (load (concatenate 'simple-string *host-obj-prefix* stem *host-obj-suffix*)))
371 (compile 'host-load-stem)
373 ;;;; tools to compile SBCL sources to create object files which will
374 ;;;; be used to create the target SBCL .core file
376 ;;; Run the cross-compiler on a file in the source directory tree to
377 ;;; produce a corresponding file in the target object directory tree.
378 (defun target-compile-stem (stem &key assem-p ignore-failure-p)
379 (funcall *in-target-compilation-mode-fn*
382 :obj-prefix *target-obj-prefix*
383 :obj-suffix *target-obj-suffix*
384 :ignore-failure-p ignore-failure-p
385 :compile-file (if assem-p
386 *target-assemble-file*
387 *target-compile-file*)))))
388 (compile 'target-compile-stem)
390 ;;; (This function is not used by the build process, but is intended
391 ;;; for interactive use when experimenting with the system. It runs
392 ;;; the cross-compiler on test files with arbitrary filenames, not
393 ;;; necessarily in the source tree, e.g. in "/tmp".)
394 (defun target-compile-file (filename)
395 (funcall *in-target-compilation-mode-fn*
397 (funcall *target-compile-file* filename))))
398 (compile 'target-compile-file)