Tighter floating-point type constraints in some cases

[sbcl.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index f840516..3137709 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -126,6 +126,17 @@ INSTALLING SBCL
   This also sets the default SBCL_HOME to prefix/lib/sbcl/ for the
   built binaries.
 
+  To configure SBCL with a non-standard default dynamic-space size,
+  use the --dynamic-space-size option:
+
+    $ sh make.sh --dynamic-space-size=4Gb
+    $ sh make.sh --dynamic-space-size=800Mb
+
+  If mega- or gigabytes are not specified, the number is taken to be
+  in megabytes. The standard default is 512Mb for 32-bit systems, and
+  1Gb for 64-bit systems (with the exception of OpenBSD where 444Mb
+  are used to fit under default ulimits.)
+
   If you don't already have an SBCL binary installed as "sbcl" on your
   system, you'll need to tell make.sh what Lisp to use as the
   cross-compilation host. For example, to use CMUCL (assuming has