+# MachTen 2.x has its own hint file.
+#
+# The original version of this file was put together by Andy Dougherty
+# <doughera@lafayette.edu> based on comments from lots of
+# folks, especially
+# Mark Pease <peasem@primenet.com>
+# Martijn Koster <m.koster@webcrawler.com>
+# Richard Yeh <rcyeh@cco.caltech.edu>
+#
+# Prevent building of perls later than 5.6.x, stating why -- see above.
+# -- Dominic Dunlop <domo@computer.org> 040213
+# 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 <domo@computer.org> 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 <domo@computer.org> 000224
+# Disable shadow password file access: MT 4.1.1 has necessary library
+# functions, but not header file (or documentation)
+# -- Dominic Dunlop <domo@computer.org> 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 <domo@computer.org> 9800802
+# Completely disable SysV IPC pending more complete support from Tenon
+# -- Dominic Dunlop <domo@computer.org> 980712
+# Use vfork and perl's malloc by default
+# -- Dominic Dunlop <domo@computer.org> 980630
+# Raise perl's stack size again; cut down reg_infty; document
+# -- Dominic Dunlop <domo@computer.org> 980619
+# Use of semctl() can crash system: disable -- Dominic Dunlop 980506
+# Raise stack size further; slight tweaks to accomodate MT 4.1
+# -- Dominic Dunlop <domo@computer.org> 980211
+# Raise perl's stack size -- Dominic Dunlop <domo@tcp.ip.lu> 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
+
+# Assume that PERL_REVISON in patchlevel.h is 5.
+# If you want to try building perl-5.8.x or later, set PERL_VERSION_SAFE_MAX
+# appropriately in your environment before running Configure.
+if [ `awk '$1=="#define" && $2=="PERL_VERSION"{print $3}' patchlevel.h` \
+ -gt ${PERL_VERSION_SAFE_MAX:-6} ]
+then
+ cat <<EOF >&4
+
+Perl versions greater than 5.6.x have not been ported to MachTen. If you
+wish to build a version from the 5.6 track, please see the notes in
+README.machten
+EOF
+ exit 1
+fi
+#
+# MachTen 4.1.1's support for shadow password file access is incomplete:
+# disable its use completely.
+d_getspnam=${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 less 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'