2 # This is for MachTen 4.0.3. It might work on other versions and variants too.
4 # Users of earlier MachTen versions might need a fixed tr from ftp.tenon.com.
5 # This should be described in the MachTen release notes.
7 # MachTen 2.x has its own hint file.
9 # This file has been put together by Andy Dougherty
10 # <doughera@lafcol.lafayette.edu> based on comments from lots of
12 # Mark Pease <peasem@primenet.com>
13 # Martijn Koster <m.koster@webcrawler.com>
14 # Richard Yeh <rcyeh@cco.caltech.edu>
16 # Completely disable SysV IPC pending more complete support from Tenon
17 # -- Dominic Dunlop <domo@computer.org> 980712
18 # Use vfork and perl's malloc by default
19 # -- Dominic Dunlop <domo@computer.org> 980630
20 # Raise perl's stack size again; cut down reg_infty; document
21 # -- Dominic Dunlop <domo@computer.org> 980619
22 # Use of semctl() can crash system: disable -- Dominic Dunlop 980506
23 # Raise stack size further; slight tweaks to accomodate MT 4.1
24 # -- Dominic Dunlop <domo@computer.org> 980211
25 # Raise perl's stack size -- Dominic Dunlop <domo@tcp.ip.lu> 970922
26 # Reinstate sigsetjmp iff version is 4.0.3 or greater; use nm
27 # (assumes Configure change); prune libswanted -- Dominic Dunlop 970113
28 # Warn about test failure due to old Berkeley db -- Dominic Dunlop 970105
29 # Do not use perl's malloc; SysV IPC OK -- Neil Cutcliffe, Tenon 961030
30 # File::Find's use of link count disabled by Dominic Dunlop 960528
31 # Perl's use of sigsetjmp etc. disabled by Dominic Dunlop 960521
33 # Comments, questions, and improvements welcome!
35 # MachTen 4.X does support dynamic loading, but perl doesn't
36 # know how to use it yet.
38 # Power MachTen is a real memory system and its standard malloc
39 # has been optimized for this. Using this malloc instead of Perl's
40 # malloc may result in significant memory savings. In particular,
41 # unlike most UNIX memory allocation subsystems, MachTen's free()
42 # really does return unneeded process data memory to the system.
43 # However, MachTen's malloc() is woefully slow -- maybe 100 times
44 # slower than perl's own, so perl's own is usually the better
45 # choice. In order to use perl's malloc(), the sbrk() system call
46 # must be simulated using MachTen's malloc(). See malloc.c for
47 # precise details of how this is achieved. Recent improvements
48 # to perl's malloc() currently crash MachTen, and so are disabled
49 # by -DPLAIN_MALLOC and -DNO_FANCY_MALLOC.
50 usemymalloc=${usemymalloc:-y}
52 # Do not wrap the following long line
53 malloc_cflags='ccflags="$ccflags -DPLAIN_MALLOC -DNO_FANCY_MALLOC -DUSE_PERL_SBRK"'
55 # Note that an empty malloc_cflags appears in config.sh if perl's
56 # malloc() is not used. his is harmless.
57 case "$usemymalloc" in
58 n) unset malloc_cflags;;
59 *) ccflags="$ccflags -DHIDEMYMALLOC"
62 # When MachTen does a fork(), it immediately copies the whole of
63 # the parent process' data space for the child. This can be
64 # expensive. Using vfork() where appropriate avoids this cost.
65 d_vfork=${d_vfork:-define}
67 # Specify a high level of optimization (-O3 wouldn't do much more)
68 optimize=${optimize:--O2 -fomit-frame-pointer}
70 # Make symbol table listings les voluminous
73 # Set reg_infty -- the maximum allowable number of repeats in regular
74 # expressions such as /a{1,$max_repeats}/, and the maximum number of
75 # times /a*/ will match. Setting this too high without having a stack
76 # large enough to accommodate deep recursion in the regular expression
77 # engine allows perl to crash your Mac due to stack overrun if it
78 # encounters a pathological regular expression. The default is a
79 # compromise between capability and required stack size (see below).
80 # You may override the default value from the Configure command-line
83 # Configure -Dreg_infty=16368 ...
85 reg_infty=${reg_infty:-2047}
87 # If you want to have many perl processes active simultaneously --
88 # processing CGI forms -- for example, you should opt for a small stack.
89 # For safety, you should set reg_infty no larger than the corresponding
90 # value given in this table:
92 # Stack size reg_infty value supported
93 # ---------- -------------------------
99 # 16M 2**15-1 (32767) (perl's default value)
101 # This script selects a safe stack size based on the value of reg_infty
102 # specified above. However, you may choose to take a risk and set
103 # stack size lower: pathological regular expressions are rare in real-world
104 # programs. But be aware that, if perl does encounter one, it WILL
105 # crash your system. Do not set stack size lower than 96k unless
106 # you want perl's installation tests ( make test ) to crash your system.
108 # You may override the default value from the Configure command-line
109 # by specifying the required size in kilobytes like this:
111 # Configure -Dstack_size=96
113 if [ "X$stack_size" = 'X' ]
116 X=`expr $reg_infty / 256`
121 stack_size=`expr $stack_size \* 2`
123 X=`expr $stack_size \* 1024`
126 ldflags="$ldflags -Xlstack=$X"
127 ccflags="$ccflags -DREG_INFTY=$reg_infty"
129 # Install in /usr/local by default
132 # At least on PowerMac, doubles must be aligned on 8 byte boundaries.
133 # I don't know if this is true for all MachTen systems, or how to
134 # determine this automatically.
137 # 4.0.2 and earlier had a problem with perl's use of sigsetjmp and
138 # friends. Use setjmp and friends instead.
139 expr "$osvers" \< "4.0.3" > /dev/null && d_sigsetjmp='undef'
141 # System V IPC support in MachTen 4.1 is incomplete (missing msg function
142 # prototypes, no ftok()), buggy (semctl(.., .., IPC_STATUS, ..) hangs
143 # system), and undocumented. Claim it's not there until things improve.
144 d_msg=${d_msg:-undef}
145 d_sem=${d_sem:-undef}
146 d_shm=${d_shm:-undef}
148 # Get rid of some extra libs which it takes Configure a tediously
149 # long time never to find on MachTen
150 set `echo X "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \
151 -e 's/ inet / /' -e 's/ nsl / /' -e 's/ nm / /' -e 's/ malloc / /' \
152 -e 's/ ld / /' -e 's/ sun / /' -e 's/ posix / /' \
153 -e 's/ cposix / /' -e 's/ crypt / /' \
154 -e 's/ ucb / /' -e 's/ bsd / /' -e 's/ BSD / /' -e 's/ PW / /'`
158 # While link counts on MachTen 4.1's fast file systems work correctly,
159 # on Macintosh Heirarchical File Systems, (and on HFS+)
160 # MachTen always reports ony two links to directories, even if they
161 # contain subdirectories. Consequently, we use this variable to stop
162 # File::Find using the link count to determine whether there are
163 # subdirectories to be searched. This will generate a harmless message:
164 # Hmm...You had some extra variables I don't know about...I'll try to keep 'em.
165 # Propagating recommended variable dont_use_nlink
166 dont_use_nlink=define
170 During Configure, you may see the message
172 *** WHOA THERE!!! ***
173 The recommended value for \$d_msg on this machine was "undef"!
174 Keep the recommended value? [y]
176 as well as similar messages concerning \$d_sem and \$d_shm. Select the
177 default answers: MachTen 4.1 appears to provide System V IPC support,
178 but it is incomplete and buggy: perl should be built without it.
180 Similarly, when you see
182 *** WHOA THERE!!! ***
183 The recommended value for \$d_vfork on this machine was "define"!
184 Keep the recommended value? [y]
186 select the default answer: vfork() works, and avoids expensive data
189 At the end of Configure, you will see a harmless message
191 Hmm...You had some extra variables I don't know about...I'll try to keep 'em.
192 Propagating recommended variable dont_use_nlink
193 Propagating recommended variable nmopts
194 Propagating recommended variable malloc_cflags...
195 Propagating recommended variable reg_infty
196 Read the File::Find documentation for more information about dont_use_nlink
198 Your perl will be built with a stack size of ${stack_size}k and a regular
199 expression repeat count limit of $reg_infty. If you want alternative
200 values, see the file hints/machten.sh for advice on how to change them.
205 may fail since MachTen may not return a useful nlinks field to stat
209 expr "$osvers" \< "4.1" >/dev/null && test -r ./broken-db.msg && \