X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=base-target-features.lisp-expr;h=6e8a691b66b3df82a5b388afb77d1df0a208395c;hb=00a95163b61ff03b2f227659264d1b420e53e1a5;hp=a760984c4d05765a395a39ae2b7129cb6e96f7d7;hpb=5cd15f4133804a16c5d367556da160144e741852;p=sbcl.git

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index a760984..6e8a691 100644
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -107,11 +107,13 @@
  ;; readtable configured so that the system sources can be read.
  ; :sb-show
 
- ;; Build SBCL with the old CMU CL low level debugger, "ldb". If are
- ;; aren't messing with SBCL at a very low level (e.g., trying to
- ;; diagnose GC problems, or trying to debug assembly code for a port
- ;; to a new CPU) you shouldn't need this.
- ; :sb-ldb
+ ;; Build SBCL with the old CMU CL low level debugger, "ldb". In the
+ ;; ideal world you would not need this unless you are messing with
+ ;; SBCL at a very low level (e.g., trying to diagnose GC problems, or
+ ;; trying to debug assembly code for a port to a new CPU). However,
+ ;; experience shows that sooner or later everyone lose()'s, in which
+ ;; case SB-LDB can at least provide an informative backtrace.
+ :sb-ldb
 
  ;; This isn't really a target Lisp feature at all, but controls
  ;; whether the build process produces an after-xc.core file. This
@@ -162,6 +164,22 @@
  ;; so caveat executor.
  ; :sb-thread
 
+ ;; lutex support
+ ;;
+ ;; While on linux we are able to use futexes for our locking
+ ;; primitive, on other platforms we don't have this luxury. NJF's
+ ;; lutexes present a locking API similar to the futex-based API that
+ ;; allows for sb-thread support on x86 OS X, Solaris and
+ ;; FreeBSD.
+ ;;
+ ; :sb-lutex
+
+ ;; On some operating systems the FS segment register (used for SBCL's
+ ;; thread local storage) is not reliably preserved in signal
+ ;; handlers, so we need to restore its value from the pthread thread
+ ;; local storage.
+ ; :restore-tls-segment-register-from-tls
+
  ;; Support for detection of unportable code (when applied to the
  ;; COMMON-LISP package, or SBCL-internal pacakges) or bad-neighbourly
  ;; code (when applied to user-level packages), relating to material
@@ -173,6 +191,11 @@
  ;; character set.
  :sb-unicode
 
+ ;; Record source location information for variables, classes, conditions,
+ ;; packages, etc. Gives much better information on M-. in Slime, but
+ ;; increases core size by about 100kB.
+ :sb-source-locations
+
  ;; This affects the definition of a lot of things in bignum.lisp. It
  ;; doesn't seem to be documented anywhere what systems it might apply
  ;; to. It doesn't seem to be needed for X86 systems anyway.
@@ -279,6 +302,9 @@
  ;;   :stack-allocatable-closures
  ;;     The compiler can allocate dynamic-extent closures on stack.
  ;;
+ ;;   :alien-callbacks
+ ;;     Alien callbacks have been implemented for this platform.
+ ;;
  ;; operating system features:
  ;;   :linux   = We're intended to run under some version of Linux.
  ;;   :bsd     = We're intended to run under some version of BSD Unix. (This