3 # This is for MachTen 4.1.4. It might work on other versions and variants
4 # too. If it doesn't, tell me, and I'll try to fix it -- domo@computer.org
6 # Users of earlier MachTen versions might need a fixed tr from ftp.tenon.com.
7 # This should be described in the MachTen release notes.
9 # MachTen 2.x has its own hint file.
11 # The original version of this file was put together by Andy Dougherty
12 # <doughera@lafayette.edu> based on comments from lots of
14 # Mark Pease <peasem@primenet.com>
15 # Martijn Koster <m.koster@webcrawler.com>
16 # Richard Yeh <rcyeh@cco.caltech.edu>
18 # Deny system's false claims to support mmap() and munmap(); note
19 # also that Sys V IPC (re)disabled by jhi due to continuing inadequacy
20 # -- Dominic Dunlop <domo@computer.org> 001111
21 # Remove dynamic loading libraries from search; enable SysV IPC with
22 # MachTen 4.1.4 and above; define SYSTEM_ALIGN_BYTES for old MT versions
23 # -- Dominic Dunlop <domo@computer.org> 000224
24 # Disable shadow password file access: MT 4.1.1 has necessary library
25 # functions, but not header file (or documentation)
26 # -- Dominic Dunlop <domo@computer.org> 990804
27 # For now, explicitly disable dynamic loading -- MT 4.1.1 has it,
28 # but these hints do not yet support it.
29 # Define NOTEDEF_MACHTEN to undo gratuitous Tenon hack to signal.h.
30 # -- Dominic Dunlop <domo@computer.org> 9800802
31 # Completely disable SysV IPC pending more complete support from Tenon
32 # -- Dominic Dunlop <domo@computer.org> 980712
33 # Use vfork and perl's malloc by default
34 # -- Dominic Dunlop <domo@computer.org> 980630
35 # Raise perl's stack size again; cut down reg_infty; document
36 # -- Dominic Dunlop <domo@computer.org> 980619
37 # Use of semctl() can crash system: disable -- Dominic Dunlop 980506
38 # Raise stack size further; slight tweaks to accomodate MT 4.1
39 # -- Dominic Dunlop <domo@computer.org> 980211
40 # Raise perl's stack size -- Dominic Dunlop <domo@tcp.ip.lu> 970922
41 # Reinstate sigsetjmp iff version is 4.0.3 or greater; use nm
42 # (assumes Configure change); prune libswanted -- Dominic Dunlop 970113
43 # Warn about test failure due to old Berkeley db -- Dominic Dunlop 970105
44 # Do not use perl's malloc; SysV IPC OK -- Neil Cutcliffe, Tenon 961030
45 # File::Find's use of link count disabled by Dominic Dunlop 960528
46 # Perl's use of sigsetjmp etc. disabled by Dominic Dunlop 960521
48 # Comments, questions, and improvements welcome!
50 # MachTen 4.1.1's support for shadow password file access is incomplete:
51 # disable its use completely.
52 d_getspnam=${d_getspnam:-undef}
54 # MachTen 4.1.1 does support dynamic loading, but perl doesn't
55 # know how to use it yet.
58 # MachTen 4.1.1 may have an unhelpful hack in /usr/include/signal.h.
60 if grep NOTDEF_MACHTEN /usr/include/signal.h > /dev/null
62 ccflags="$ccflags -DNOTDEF_MACHTEN"
65 # Power MachTen is a real memory system and its standard malloc
66 # has been optimized for this. Using this malloc instead of Perl's
67 # malloc may result in significant memory savings. In particular,
68 # unlike most UNIX memory allocation subsystems, MachTen's free()
69 # really does return unneeded process data memory to the system.
70 # However, MachTen's malloc() is woefully slow -- maybe 100 times
71 # slower than perl's own, so perl's own is usually the better
72 # choice. In order to use perl's malloc(), the sbrk() system call
73 # must be simulated using MachTen's malloc(). See malloc.c for
74 # precise details of how this is achieved. Recent improvements
75 # to perl's malloc() currently crash MachTen, and so are disabled
76 # by -DPLAIN_MALLOC and -DNO_FANCY_MALLOC.
77 usemymalloc=${usemymalloc:-y}
79 # Older versions of MachTen malloc() data on a two-byte boundary, which
80 # works, but slows down operations on long, float and double data.
81 # Perl's malloc() can compensate if SYSTEM_ALLOC_ALIGNMENT is suitably
83 if expr "$osvers" \< "4.1" >/dev/null
85 system_alloc_alignment=" -DSYSTEM_ALLOC_ALIGNMENT=2"
87 # Do not wrap the following long line
88 malloc_cflags='ccflags="$ccflags -DPLAIN_MALLOC -DNO_FANCY_MALLOC -DUSE_PERL_SBRK$system_alloc_alignment"'
90 # When MachTen does a fork(), it immediately copies the whole of
91 # the parent process' data space for the child. This can be
92 # expensive. Using vfork() where appropriate avoids this cost.
93 d_vfork=${d_vfork:-define}
95 # Specify a high level of optimization (-O3 wouldn't do much more)
96 optimize=${optimize:--O2 -fomit-frame-pointer}
98 # Make symbol table listings les voluminous
101 # Set reg_infty -- the maximum allowable number of repeats in regular
102 # expressions such as /a{1,$max_repeats}/, and the maximum number of
103 # times /a*/ will match. Setting this too high without having a stack
104 # large enough to accommodate deep recursion in the regular expression
105 # engine allows perl to crash your Mac due to stack overrun if it
106 # encounters a pathological regular expression. The default is a
107 # compromise between capability and required stack size (see below).
108 # You may override the default value from the Configure command-line
111 # Configure -Dreg_infty=16368 ...
113 reg_infty=${reg_infty:-2047}
115 # If you want to have many perl processes active simultaneously --
116 # processing CGI forms -- for example, you should opt for a small stack.
117 # For safety, you should set reg_infty no larger than the corresponding
118 # value given in this table:
120 # Stack size reg_infty value supported
121 # ---------- -------------------------
124 # 512k 2**10-1 (1023)
127 # 16M 2**15-1 (32767) (perl's default value)
129 # This script selects a safe stack size based on the value of reg_infty
130 # specified above. However, you may choose to take a risk and set
131 # stack size lower: pathological regular expressions are rare in real-world
132 # programs. But be aware that, if perl does encounter one, it WILL
133 # crash your system. Do not set stack size lower than 96k unless
134 # you want perl's installation tests ( make test ) to crash your system.
136 # You may override the default value from the Configure command-line
137 # by specifying the required size in kilobytes like this:
139 # Configure -Dstack_size=96
141 if [ "X$stack_size" = 'X' ]
144 X=`expr $reg_infty / 256`
149 stack_size=`expr $stack_size \* 2`
151 X=`expr $stack_size \* 1024`
154 ldflags="$ldflags -Xlstack=$X"
155 ccflags="$ccflags -DREG_INFTY=$reg_infty"
157 # Install in /usr/local by default
160 # At least on PowerMac, doubles must be aligned on 8 byte boundaries.
161 # I don't know if this is true for all MachTen systems, or how to
162 # determine this automatically.
165 # 4.0.2 and earlier had a problem with perl's use of sigsetjmp and
166 # friends. Use setjmp and friends instead.
167 expr "$osvers" \< "4.0.3" > /dev/null && d_sigsetjmp='undef'
169 # System V IPC before MachTen 4.1.4 is incomplete (missing msg function
170 # prototypes, no ftok()), buggy (semctl(.., .., IPC_STATUS, ..) hangs
171 # system), and undocumented. Claim it's not there at all before 4.1.4.
172 if expr "$osvers" \< "4.1.4" >/dev/null
174 d_msg=${d_msg:-undef}
175 d_sem=${d_sem:-undef}
176 d_shm=${d_shm:-undef}
180 # As of MachTen 4.1.4 the msg* and shm* are in libc but unimplemented
181 # (an attempt to use them causes a runtime error)
182 # XXX Configure probe for really functional msg*() is needed XXX
183 # XXX Configure probe for really functional shm*() is needed XXX
184 if test "$d_msg" = ""; then
185 d_msgget=${d_msgget:-undef}
186 d_msgctl=${d_msgctl:-undef}
187 d_msgsnd=${d_msgsnd:-undef}
188 d_msgrcv=${d_msgrcv:-undef}
189 case "$d_msgget$d_msgsnd$d_msgctl$d_msgrcv" in
190 *"undef"*) d_msg="$undef" ;;
193 if test "$d_shm" = ""; then
194 d_shmat=${d_shmat:-undef}
195 d_shmdt=${d_shmdt:-undef}
196 d_shmget=${d_shmget:-undef}
197 d_shmctl=${d_shmctl:-undef}
198 case "$d_shmat$d_shmctl$d_shmdt$d_shmget" in
199 *"undef"*) d_shm="$undef" ;;
203 # MachTen has stubs for mmap and munmap(), but they just result in the
204 # caller being killed on the grounds of "Bad system call"
205 d_mmap=${d_mmap:-undef}
206 d_munmap=${d_munmap:-undef}
208 # Get rid of some extra libs which it takes Configure a tediously
209 # long time never to find on MachTen, or which break perl
210 set `echo X "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \
211 -e 's/ inet / /' -e 's/ nsl / /' -e 's/ nm / /' -e 's/ malloc / /' \
212 -e 's/ ld / /' -e 's/ sun / /' -e 's/ posix / /' \
213 -e 's/ cposix / /' -e 's/ crypt / /' -e 's/ dl / /' -e 's/ dld / /' \
214 -e 's/ ucb / /' -e 's/ bsd / /' -e 's/ BSD / /' -e 's/ PW / /'`
218 # While link counts on MachTen 4.1's fast file systems work correctly,
219 # on Macintosh Heirarchical File Systems, (and on HFS+)
220 # MachTen always reports ony two links to directories, even if they
221 # contain subdirectories. Consequently, we use this variable to stop
222 # File::Find using the link count to determine whether there are
223 # subdirectories to be searched. This will generate a harmless message:
224 # Hmm...You had some extra variables I don't know about...I'll try to keep 'em.
225 # Propagating recommended variable dont_use_nlink
226 dont_use_nlink=define
230 During Configure, you may see the message
232 *** WHOA THERE!!! ***
233 The recommended value for \$d_msg on this machine was "undef"!
234 Keep the recommended value? [y]
236 as well as similar messages concerning \$d_sem and \$d_shm. Select the
237 default answers: MachTen 4.1 appears to provide System V IPC support,
238 but it is incomplete and buggy: perl should be built without it.
239 Similar considerations apply to memory mapping of files, controlled
240 by \$d_mmap and \$d_munmap.
242 Similarly, when you see
244 *** WHOA THERE!!! ***
245 The recommended value for \$d_vfork on this machine was "define"!
246 Keep the recommended value? [y]
248 select the default answer: vfork() works, and avoids expensive data
251 You may also see "WHOA THERE!!!" messages concerning \$d_getspnam.
252 Select the default answer: MachTen's support for shadow password
253 file access is incomplete, and should not be used.
255 At the end of Configure, you will see a harmless message
257 Hmm...You had some extra variables I don't know about...I'll try to keep 'em.
258 Propagating recommended variable dont_use_nlink
259 Propagating recommended variable nmopts
260 Propagating recommended variable malloc_cflags...
261 Propagating recommended variable reg_infty
262 Propagating recommended variable system_alloc_alignment
263 Read the File::Find documentation for more information about dont_use_nlink
265 Your perl will be built with a stack size of ${stack_size}k and a regular
266 expression repeat count limit of $reg_infty. If you want alternative
267 values, see the file hints/machten.sh for advice on how to change them.
272 may fail since MachTen may not return a useful nlinks field to stat
276 expr "$osvers" \< "4.1" >/dev/null && test -r ./broken-db.msg && \