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