# 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
#
# MachTen 4.1.1's support for shadow password file access is incomplete:
# disable its use completely.
-d_endspent=${d_endspent:-undef}
-d_getspent=${d_getspent:-undef}
d_getspnam=${d_getspnam:-undef}
-d_setspent=${d_setspent:-undef}
# MachTen 4.1.1 does support dynamic loading, but perl doesn't
# know how to use it yet.
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 / /' \
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
select the default answer: vfork() works, and avoids expensive data
copying.
-You may also see "WHOA THERE!!!" messages concerning \$d_endspent,
-\$d_getspent, \$d_getspnam and \$d_setspent. In all cases, select the
-default answer: MachTen's support for shadow password file access is
-incomplete, and should not be used.
+You may also see "WHOA THERE!!!" messages concerning \$d_getspnam.
+Select the default answer: MachTen's support for shadow password
+file access is incomplete, and should not be used.
At the end of Configure, you will see a harmless message