#! /bin/bash # machten.sh # This is for MachTen 4.1.4. It might work on other versions and variants # too. If it doesn't, tell me, and I'll try to fix it -- domo@computer.org # # Users of earlier MachTen versions might need a fixed tr from ftp.tenon.com. # This should be described in the MachTen release notes. # # MachTen 2.x has its own hint file. # # The original version of this file was put together by Andy Dougherty # based on comments from lots of # folks, especially # Mark Pease # 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 # Disable shadow password file access: MT 4.1.1 has necessary library # functions, but not header file (or documentation) # -- Dominic Dunlop 990804 # For now, explicitly disable dynamic loading -- MT 4.1.1 has it, # but these hints do not yet support it. # Define NOTEDEF_MACHTEN to undo gratuitous Tenon hack to signal.h. # -- Dominic Dunlop 9800802 # Completely disable SysV IPC pending more complete support from Tenon # -- Dominic Dunlop 980712 # Use vfork and perl's malloc by default # -- Dominic Dunlop 980630 # Raise perl's stack size again; cut down reg_infty; document # -- Dominic Dunlop 980619 # Use of semctl() can crash system: disable -- Dominic Dunlop 980506 # Raise stack size further; slight tweaks to accomodate MT 4.1 # -- Dominic Dunlop 980211 # Raise perl's stack size -- Dominic Dunlop 970922 # Reinstate sigsetjmp iff version is 4.0.3 or greater; use nm # (assumes Configure change); prune libswanted -- Dominic Dunlop 970113 # Warn about test failure due to old Berkeley db -- Dominic Dunlop 970105 # Do not use perl's malloc; SysV IPC OK -- Neil Cutcliffe, Tenon 961030 # File::Find's use of link count disabled by Dominic Dunlop 960528 # Perl's use of sigsetjmp etc. disabled by Dominic Dunlop 960521 # # Comments, questions, and improvements welcome! # # MachTen 4.1.1's support for shadow password file access is incomplete: # disable its use completely. d_getspnam=${d_getspnam:-undef} # MachTen 4.1.1 does support dynamic loading, but perl doesn't # know how to use it yet. usedl=${usedl:-undef} # MachTen 4.1.1 may have an unhelpful hack in /usr/include/signal.h. # Undo it if so. if grep NOTDEF_MACHTEN /usr/include/signal.h > /dev/null then ccflags="$ccflags -DNOTDEF_MACHTEN" fi # Power MachTen is a real memory system and its standard malloc # has been optimized for this. Using this malloc instead of Perl's # malloc may result in significant memory savings. In particular, # unlike most UNIX memory allocation subsystems, MachTen's free() # really does return unneeded process data memory to the system. # However, MachTen's malloc() is woefully slow -- maybe 100 times # slower than perl's own, so perl's own is usually the better # choice. In order to use perl's malloc(), the sbrk() system call # must be simulated using MachTen's malloc(). See malloc.c for # precise details of how this is achieved. Recent improvements # to perl's malloc() currently crash MachTen, and so are disabled # by -DPLAIN_MALLOC and -DNO_FANCY_MALLOC. usemymalloc=${usemymalloc:-y} # Older versions of MachTen malloc() data on a two-byte boundary, which # works, but slows down operations on long, float and double data. # Perl's malloc() can compensate if SYSTEM_ALLOC_ALIGNMENT is suitably # defined. if expr "$osvers" \< "4.1" >/dev/null then system_alloc_alignment=" -DSYSTEM_ALLOC_ALIGNMENT=2" fi # Do not wrap the following long line malloc_cflags='ccflags="$ccflags -DPLAIN_MALLOC -DNO_FANCY_MALLOC -DUSE_PERL_SBRK$system_alloc_alignment"' # When MachTen does a fork(), it immediately copies the whole of # the parent process' data space for the child. This can be # expensive. Using vfork() where appropriate avoids this cost. d_vfork=${d_vfork:-define} # Specify a high level of optimization (-O3 wouldn't do much more) optimize=${optimize:--O2 -fomit-frame-pointer} # Make symbol table listings les voluminous nmopts=-gp # Set reg_infty -- the maximum allowable number of repeats in regular # expressions such as /a{1,$max_repeats}/, and the maximum number of # times /a*/ will match. Setting this too high without having a stack # large enough to accommodate deep recursion in the regular expression # engine allows perl to crash your Mac due to stack overrun if it # encounters a pathological regular expression. The default is a # compromise between capability and required stack size (see below). # You may override the default value from the Configure command-line # like this: # # Configure -Dreg_infty=16368 ... reg_infty=${reg_infty:-2047} # If you want to have many perl processes active simultaneously -- # processing CGI forms -- for example, you should opt for a small stack. # For safety, you should set reg_infty no larger than the corresponding # value given in this table: # # Stack size reg_infty value supported # ---------- ------------------------- # 128k 2**8-1 (256) # 256k 2**9-1 (511) # 512k 2**10-1 (1023) # 1M 2**11-1 (2047) # ... # 16M 2**15-1 (32767) (perl's default value) # This script selects a safe stack size based on the value of reg_infty # specified above. However, you may choose to take a risk and set # stack size lower: pathological regular expressions are rare in real-world # programs. But be aware that, if perl does encounter one, it WILL # crash your system. Do not set stack size lower than 96k unless # you want perl's installation tests ( make test ) to crash your system. # # You may override the default value from the Configure command-line # by specifying the required size in kilobytes like this: # # Configure -Dstack_size=96 if [ "X$stack_size" = 'X' ] then stack_size=128 X=`expr $reg_infty / 256` while [ $X -gt 0 ] do X=`expr $X / 2` stack_size=`expr $stack_size \* 2` done X=`expr $stack_size \* 1024` fi ldflags="$ldflags -Xlstack=$X" ccflags="$ccflags -DREG_INFTY=$reg_infty" # Install in /usr/local by default prefix='/usr/local' # At least on PowerMac, doubles must be aligned on 8 byte boundaries. # I don't know if this is true for all MachTen systems, or how to # determine this automatically. alignbytes=8 # 4.0.2 and earlier had a problem with perl's use of sigsetjmp and # friends. Use setjmp and friends instead. expr "$osvers" \< "4.0.3" > /dev/null && d_sigsetjmp='undef' # System V IPC before MachTen 4.1.4 is incomplete (missing msg function # prototypes, no ftok()), buggy (semctl(.., .., IPC_STATUS, ..) hangs # system), and undocumented. Claim it's not there at all before 4.1.4. if expr "$osvers" \< "4.1.4" >/dev/null then d_msg=${d_msg:-undef} d_sem=${d_sem:-undef} d_shm=${d_shm:-undef} fi # As of MachTen 4.1.4 the msg* and shm* are in libc but unimplemented # (an attempt to use them causes a runtime error) # XXX Configure probe for really functional msg*() is needed XXX # XXX Configure probe for really functional shm*() is needed XXX if test "$d_msg" = ""; then d_msgget=${d_msgget:-undef} d_msgctl=${d_msgctl:-undef} d_msgsnd=${d_msgsnd:-undef} d_msgrcv=${d_msgrcv:-undef} case "$d_msgget$d_msgsnd$d_msgctl$d_msgrcv" in *"undef"*) d_msg="$undef" ;; esac fi if test "$d_shm" = ""; then d_shmat=${d_shmat:-undef} d_shmdt=${d_shmdt:-undef} d_shmget=${d_shmget:-undef} d_shmctl=${d_shmctl:-undef} case "$d_shmat$d_shmctl$d_shmdt$d_shmget" in *"undef"*) d_shm="$undef" ;; 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 "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \ -e 's/ inet / /' -e 's/ nsl / /' -e 's/ nm / /' -e 's/ malloc / /' \ -e 's/ ld / /' -e 's/ sun / /' -e 's/ posix / /' \ -e 's/ cposix / /' -e 's/ crypt / /' -e 's/ dl / /' -e 's/ dld / /' \ -e 's/ ucb / /' -e 's/ bsd / /' -e 's/ BSD / /' -e 's/ PW / /'` shift libswanted="$*" # While link counts on MachTen 4.1's fast file systems work correctly, # on Macintosh Heirarchical File Systems, (and on HFS+) # MachTen always reports ony two links to directories, even if they # contain subdirectories. Consequently, we use this variable to stop # File::Find using the link count to determine whether there are # subdirectories to be searched. This will generate a harmless message: # Hmm...You had some extra variables I don't know about...I'll try to keep 'em. # Propagating recommended variable dont_use_nlink dont_use_nlink=define cat <&4 During Configure, you may see the message *** WHOA THERE!!! *** The recommended value for \$d_msg on this machine was "undef"! Keep the recommended value? [y] 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 *** WHOA THERE!!! *** The recommended value for \$d_vfork on this machine was "define"! Keep the recommended value? [y] select the default answer: vfork() works, and avoids expensive data copying. 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 Hmm...You had some extra variables I don't know about...I'll try to keep 'em. Propagating recommended variable dont_use_nlink Propagating recommended variable nmopts Propagating recommended variable malloc_cflags... Propagating recommended variable reg_infty Propagating recommended variable system_alloc_alignment Read the File::Find documentation for more information about dont_use_nlink Your perl will be built with a stack size of ${stack_size}k and a regular expression repeat count limit of $reg_infty. If you want alternative values, see the file hints/machten.sh for advice on how to change them. Tests io/fs test 4 and op/stat test 3 may fail since MachTen may not return a useful nlinks field to stat on directories. EOM expr "$osvers" \< "4.1" >/dev/null && test -r ./broken-db.msg && \ . ./broken-db.msg unset stack_size X