;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.
-;;; GC tuning has little effect on the x86 due to the generational
-;;; collector. For the older stop & copy collector, it assuredly
-;;; does. GC time is proportional to the amount of non-garbage
-;;; needing collection and copying; when the application involved is
-;;; the SBCL compiler, it doesn't take any longer to collect 20 Mb than
-;;; to collect 2 Mb. -dan, 20000819
-;;;
-;;; Actually, tweaking *BYTES-CONSED-BETWEEN-GCS* to 20Mb instead of
-;;; the default 2 seemed to make SBCL rebuild O(25%) faster on my 256
-;;; Mb K6/3, so I think it does have some effect on X86/GENCGC. I
-;;; haven't looked into why this would be, though. Also, I'm afraid
-;;; that using 20Mb here might be unfriendly to people using more-reasonable
-;;; machines (like old laptops with 48Mb of memory..) so I've
-;;; suppressed this tweak except for Alpha. -- WHN 2001-05-11
-#+(and sbcl alpha) ; SBCL/Alpha uses stop-and-copy, and Alphas have lotso RAM.
-(progn
- (sb-ext:gc-off)
- (setf (sb-ext:bytes-consed-between-gcs) (* 20 (expt 10 6)))
- (sb-ext:gc-on)
- (sb-ext:gc))
-
-;;; FIXME: I'm now inclined to make all the bootstrap stuff run in CL-USER
-;;; instead of SB-COLD. If I do so, I should first take care to
-;;; UNINTERN any old stuff in CL-USER, since ANSI says (11.1.2.2, "The
-;;; COMMON-LISP-USER Package") that CL-USER can have arbitrary symbols in
-;;; it. (And of course I should set the USE list to only CL.)
+;;; SB-COLD holds stuff used to build the initial SBCL core file
+;;; (including not only the final construction of the core file, but
+;;; also the preliminary steps like e.g. building the cross-compiler
+;;; and running the cross-compiler to produce target FASL files).
(defpackage "SB-COLD" (:use "CL"))
+
(in-package "SB-COLD")
;;; prefixes for filename stems when cross-compiling. These are quite arbitrary
;;; "host-objects/" or absolute pathnames (e.g. "/tmp/sbcl-xc-host-objects/").
;;;
;;; The cross-compilation process will force the creation of these directories
-;;; by executing CL:ENSURE-DIRECTORIES-EXIST (on the host Common Lisp).
+;;; by executing CL:ENSURE-DIRECTORIES-EXIST (on the xc host Common Lisp).
(defvar *host-obj-prefix*)
(defvar *target-obj-prefix*)
-;;; suffixes for filename stems when cross-compiling. Everything
-;;; should work fine for any arbitrary string values here. With more
-;;; work maybe we could cause these automatically to become the
-;;; traditional extensions for whatever host and target architectures
-;;; (e.g. ".x86f" or ".axpf") we're currently doing. That would make
-;;; it easier for a human looking at the temporary files to figure out
-;;; what they're for, but it's not necessary for the compilation
-;;; process to work, so we haven't bothered.
-(defvar *host-obj-suffix* ".lisp-obj")
-(defvar *target-obj-suffix* ".lisp-obj")
+;;; suffixes for filename stems when cross-compiling
+(defvar *host-obj-suffix*
+ (or
+ ;; On some xc hosts, it's impossible to LOAD a fasl file unless it
+ ;; has the same extension that the host uses for COMPILE-FILE
+ ;; output, so we have to be careful to use the xc host's preferred
+ ;; extension.
+ ;;
+ ;; FIXME: This is a little ugly and annoying to maintain. And
+ ;; there's very likely some way to rearrange the build process so
+ ;; that we never explicitly refer to host object file suffixes,
+ ;; only to the result of CL:COMPILE-FILE-PATHNAME.
+ #+lispworks ".ufsl" ; as per Lieven Marchand sbcl-devel 2002-02-01
+ ;; On most xc hosts, any old extension works, so we use an
+ ;; arbitrary one.
+ ".lisp-obj"))
+(defvar *target-obj-suffix*
+ ;; Target fasl files are LOADed (actually only quasi-LOADed, in
+ ;; GENESIS) only by SBCL code, and it doesn't care about particular
+ ;; extensions, so we can use something arbitrary.
+ ".lisp-obj")
;;; a function of one functional argument, which calls its functional argument
;;; in an environment suitable for compiling the target. (This environment
;;; COMPILE-STEM function above. -- WHN 19990321
(defun rename-file-a-la-unix (x y)
- ;; CLISP signals an error when the target file exists, which
- ;; seems unjustified by the ANSI definition of RENAME-FILE.
- ;; Work around it.
- #+clisp (ignore-errors (delete-file y))
-
- (rename-file x
- ;; (Note that the TRUENAME expression here is lifted
- ;; from an example in the ANSI spec for TRUENAME.)
- (with-open-file (stream y :direction :output)
- (close stream)
- ;; From the ANSI spec: "In this case, the file is
- ;; closed when the truename is tried, so the truename
- ;; information is reliable."
- (truename stream))))
+ (let ((path ;; (Note that the TRUENAME expression here is lifted from an
+ ;; example in the ANSI spec for TRUENAME.)
+ (with-open-file (stream y :direction :output)
+ (close stream)
+ ;; From the ANSI spec: "In this case, the file is closed
+ ;; when the truename is tried, so the truename
+ ;; information is reliable."
+ (truename stream))))
+ (delete-file path)
+ (rename-file x path)))
(compile 'rename-file-a-la-unix)
;;; a wrapper for compilation/assembly, used mostly to centralize
ignore-failure-p)
(let* (;; KLUDGE: Note that this CONCATENATE 'STRING stuff is not The Common
- ;; Lisp Way, although it works just fine for common UNIX environments.
- ;; Should it come to pass that the system is ported to environments
- ;; where version numbers and so forth become an issue, it might become
- ;; urgent to rewrite this using the fancy Common Lisp PATHNAME
- ;; machinery instead of just using strings. In the absence of such a
- ;; port, it might or might be a good idea to do the rewrite.
- ;; -- WHN 19990815
- (src (concatenate 'string src-prefix stem src-suffix))
- (obj (concatenate 'string obj-prefix stem obj-suffix))
- (tmp-obj (concatenate 'string obj tmp-obj-suffix-suffix)))
+ ;; Lisp Way, although it works just fine for common UNIX environments.
+ ;; Should it come to pass that the system is ported to environments
+ ;; where version numbers and so forth become an issue, it might become
+ ;; urgent to rewrite this using the fancy Common Lisp PATHNAME
+ ;; machinery instead of just using strings. In the absence of such a
+ ;; port, it might or might be a good idea to do the rewrite.
+ ;; -- WHN 19990815
+ (src (concatenate 'string src-prefix stem src-suffix))
+ (obj (concatenate 'string obj-prefix stem obj-suffix))
+ (tmp-obj (concatenate 'string obj tmp-obj-suffix-suffix)))
(ensure-directories-exist obj :verbose t)
(format t
"target features *SHEBANG-FEATURES*=~@<~S~:>~%"
*shebang-features*))
+
+(defvar *shebang-backend-subfeatures*
+ (let* ((default-subfeatures nil)
+ (customizer-file-name "customize-backend-subfeatures.lisp")
+ (customizer (if (probe-file customizer-file-name)
+ (compile nil
+ (read-from-file customizer-file-name))
+ #'identity)))
+ (funcall customizer default-subfeatures)))
+(export '*shebang-backend-subfeatures*)
+(let ((*print-length* nil)
+ (*print-level* nil))
+ (format t
+ "target backend-subfeatures *SHEBANG-BACKEND-FEATURES*=~@<~S~:>~%"
+ *shebang-backend-subfeatures*))
\f
;;;; cold-init-related PACKAGE and SYMBOL tools
(load compiled-filename)))
(compile 'host-cload-stem)
-;;; Like HOST-CLOAD-STEM, except that we don't bother to compile.
+;;; like HOST-CLOAD-STEM, except that we don't bother to compile
(defun host-load-stem (stem &key ignore-failure-p)
(declare (ignore ignore-failure-p)) ; (It's only relevant when
;; compiling.) KLUDGE: It's untidy to have the knowledge of how to
projects / sbcl.git / blobdiff