X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=hints%2Fmachten.sh;h=3a311a1746a32176712e78c1260a10e228bd5a15;hb=6e9d10810a2ec27ec94fd014e5dbab341c35afb1;hp=69f16355c2db2bf3245146a9a51d00190e61a3fa;hpb=4b19af017623bfa3bb72bb164598a517f586e0d3;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/hints/machten.sh b/hints/machten.sh
index 69f1635..3a311a1 100644
--- a/hints/machten.sh
+++ b/hints/machten.sh
@@ -15,6 +15,9 @@
 #	Martijn Koster <m.koster@webcrawler.com>
 #	Richard Yeh <rcyeh@cco.caltech.edu>
 #
+# Deny system's false claims to support mmap() and munmap(); note
+# also that Sys V IPC (re)disabled by jhi due to continuing inadequacy
+#                      -- Dominic Dunlop <domo@computer.org> 001111
 # Remove dynamic loading libraries from search; enable SysV IPC with
 # MachTen 4.1.4 and above; define SYSTEM_ALIGN_BYTES for old MT versions
 #                      -- Dominic Dunlop <domo@computer.org> 000224
@@ -197,6 +200,11 @@ if test "$d_shm" = ""; then
     esac
 fi
 
+# MachTen has stubs for mmap and munmap(), but they just result in the
+# caller being killed on the grounds of "Bad system call"
+d_mmap=${d_mmap:-undef}
+d_munmap=${d_munmap:-undef}
+
 # Get rid of some extra libs which it takes Configure a tediously
 # long time never to find on MachTen, or which break perl
 set `echo X "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \
@@ -228,6 +236,8 @@ During Configure, you may see the message
 as well as similar messages concerning \$d_sem and \$d_shm.  Select the
 default answers: MachTen 4.1 appears to provide System V IPC support,
 but it is incomplete and buggy: perl should be built without it.
+Similar considerations apply to memory mapping of files, controlled
+by \$d_mmap and \$d_munmap.
 
 Similarly, when you see