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+
+
+SYSTEM-SPECIFIC HINTS
+
+for NetBSD:
+ NetBSD 2.0 and above are required because of the lack of needed
+ signal APIs in NetBSD 1.6 and earlier.
+
+for OpenBSD:
+ OpenBSD 3.0 has stricter ulimit values, and/or enforces them more
+ strictly, than its predecessors. Therefore SBCL's initial mmap()
+ won't work unless you increase the limit on the data segment from
+ the OpenBSD defaults, e.g. with
+ ulimit -S -d 1000000
+ before you run SBCL. Otherwise SBCL fails with a message like
+ "ensure_space: failed to validate xxxxxxx bytes at yyyyy". (SBCL
+ is just allocating this huge address space, not actually using this
+ huge memory at this point. OpenBSD <3.0 had no problem with this,
+ but OpenBSD 3.0 is less hospitable.)