X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=base-target-features.lisp-expr;h=78139e0ca9c8365e2174e8242e056109cd4a6263;hb=f318d0b1654042ed8f1b887852a9ba1f539208e4;hp=18592183da6314dc6fb4cd48667c70ad99626493;hpb=970dd272dc84f7420252eadb4829cc193f795716;p=sbcl.git

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index 1859218..78139e0 100644
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -57,14 +57,6 @@
  ;; local-target-features.lisp-expr via make-config.sh, as alpha,
  ;; sparc and ppc ports don't currently support it. -- CSR, 2002-02-21
 
- ;; We're running under a UNIX. This is sort of redundant, and it was also
- ;; sort of redundant under CMU CL, which we inherited it from: neither SBCL
- ;; nor CMU CL supports anything but UNIX (and "technically not UNIX"es
- ;; such as *BSD and Linux). But someday, maybe we might, and in that case
- ;; we'd presumably remove this, so its presence conveys the information
- ;; that the system isn't one which follows such a change.
- :unix
-
  ;;
  ;; features present in this particular build
  ;;
@@ -146,6 +138,13 @@
  ;; anyone who wants to collect such statistics in the future.
  ; :sb-dyncount
 
+ ;; Enable code for detecting concurrent accesses to the same hash-table
+ ;; in multiple threads. Note that this implementation is currently
+ ;; (2007-09-11) somewhat too eager: even though in the current implementation
+ ;; multiple readers are thread safe as long as there are no writers, this
+ ;; code will also trap multiple readers.
+ ; :sb-hash-table-debug
+
  ;; Peter Van Eynde's increase-bulletproofness code for CMU CL
  ;;
  ;; Some of the code which was #+high-security before the fork has now
@@ -234,6 +233,16 @@
  ;; again, if anyone's sufficiently motivated.
  ; :long-float
 
+ ;; Some platforms don't use a 32-bit off_t by default, and thus can't
+ ;; handle files larger than 2GB. This feature will control whether
+ ;; we'll try to use platform-specific compilation options to enable a
+ ;; 64-bit off_t. The intent is for this feature to be automatically
+ ;; enabled by make-config.sh on platforms where it's needed and known
+ ;; to work, you shouldn't be enabling it manually. You might however
+ ;; want to disable it, if you need to pass file descriptors to
+ ;; foreign code that uses a 32-bit off_t.
+ ; :largefile
+
  ;;
  ;; miscellaneous notes on other things which could have special significance
  ;; in the *FEATURES* list
@@ -286,8 +295,7 @@
  ;;   :hppa
  ;;      any PA-RISC CPU
  ;;   :mips
- ;;      any MIPS CPU (in little-endian mode with :little-endian -- currently
- ;;      untested)
+ ;;      any MIPS CPU (in little-endian mode with :little-endian)
  ;;
  ;; (CMU CL also had a :pentium feature, which affected the definition
  ;; of some floating point vops. It was present but not enabled or
@@ -313,7 +321,13 @@
  ;;   :alien-callbacks
  ;;     Alien callbacks have been implemented for this platform.
  ;;
+ ;;   :compare-and-swap-vops
+ ;;     The backend implements compare-and-swap VOPs.
+ ;;
  ;; operating system features:
+ ;;   :unix    = We're intended to run under some Unix-like OS. (This is not
+ ;;              exclusive with the features which indicate which particular
+ ;;              Unix-like OS we're intended to run under.)
  ;;   :linux   = We're intended to run under some version of Linux.
  ;;   :bsd     = We're intended to run under some version of BSD Unix. (This
  ;;              is not exclusive with the features which indicate which
@@ -326,8 +340,8 @@
  ;;              with the SunOS kernel.
  ;;   :osf1    = We're intended to run under Tru64 (aka Digital Unix
  ;;              aka OSF/1).
- ;; (No others are supported by SBCL as of 0.9.6, but :hpux or :irix
+ ;;   :win32   = We're intended to under some version of Microsoft Windows.
+ ;; (No others are supported by SBCL as of 1.0.8, but :hpux or :irix
  ;; support could be ported from CMU CL if anyone is sufficiently
- ;; motivated to do so, and it'd even be possible, though harder, to
- ;; port the system to Microsoft Windows.)
+ ;; motivated to do so.)
  )