# Martijn Koster <m.koster@webcrawler.com>
# Richard Yeh <rcyeh@cco.caltech.edu>
#
+# 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
#
# Comments, questions, and improvements welcome!
#
-# MachTen 4.X does support dynamic loading, but perl doesn't
+# MachTen 4.1.1's support for shadow password file access is incomplete:
+# disable its use completely.
+d_endspent=${d_endspent:-undef}
+d_getspent=${d_getspent:-undef}
+d_getspnam=${d_getspnam:-undef}
+d_setspent=${d_setspent:-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.
-usemymalloc='false'
+# 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=${usemymalloc:-y}
+
+# Do not wrap the following long line
+malloc_cflags='ccflags="$ccflags -DPLAIN_MALLOC -DNO_FANCY_MALLOC -DUSE_PERL_SBRK"'
+
+# 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
X=`expr $X / 2`
stack_size=`expr $stack_size \* 2`
done
+ X=`expr $stack_size \* 1024`
fi
-X=`expr $stack_size \* 1024`
ldflags="$ldflags -Xlstack=$X"
ccflags="$ccflags -DREG_INFTY=$reg_infty"
# friends. Use setjmp and friends instead.
expr "$osvers" \< "4.0.3" > /dev/null && d_sigsetjmp='undef'
-# semctl(.., .., IPC_STATUS, ..) hangs system: say we don't have semctl()
-d_semctl='undef'
+# System V IPC support in MachTen 4.1 is incomplete (missing msg function
+# prototypes, no ftok()), buggy (semctl(.., .., IPC_STATUS, ..) hangs
+# system), and undocumented. Claim it's not there until things improve.
+d_msg=${d_msg:-undef}
+d_sem=${d_sem:-undef}
+d_shm=${d_shm:-undef}
# Get rid of some extra libs which it takes Configure a tediously
# long time never to find on MachTen
During Configure, you may see the message
*** WHOA THERE!!! ***
- The recommended value for \$d_semctl on this machine was "undef"!
+ The recommended value for \$d_msg on this machine was "undef"!
Keep the recommended value? [y]
-Select the default answer: semctl() is buggy, and perl should be built
-without it.
+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.
+
+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_endspent,
+\$d_getspent, \$d_getspnam and \$d_setspent. In all cases, 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
Read the File::Find documentation for more information about dont_use_nlink
projects / p5sagit/p5-mst-13.2.git / blobdiff