From: Dominic Dunlop Date: Sat, 11 Nov 2000 18:20:32 +0000 (+0100) Subject: MachTen doesn't really do mmap() and munmap(). X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=2f4b48000e026c1d24d84752f7d3b1e2de5285d5;p=p5sagit%2Fp5-mst-13.2.git MachTen doesn't really do mmap() and munmap(). Subject: [PATCHES Bleadperl] Re: PerlIO - what all of you can all do. Message-Id: p4raw-id: //depot/perl@7649 --- 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 # Richard Yeh # +# 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 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 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