This is patch.2b1e to perl5.002beta1. This is simply

[perl5.git] / Configure

#! /bin/sh
#
# If these # comments don't work, trim them. Don't worry about any other
# shell scripts, Configure will trim # comments from them for you.
#
# (If you are trying to port this package to a machine without sh,
# I would suggest you have a look at the prototypical config_h.SH file
# and edit it to reflect your system. Some packages may include samples
# of config.h for certain machines, so you might look for one of those.)
#
# Yes, you may rip this off to use in other distribution packages. This
# script belongs to the public domain and cannot be copyrighted.
#
# (Note: this Configure script was generated automatically. Rather than
# working with this copy of Configure, you may wish to get metaconfig.
# The dist-3.0 package (which contains metaconfig) was posted in
# comp.sources.misc so you may fetch it yourself from your nearest
# archive site. Check with Archie if you don't know where that can be.)
#

# $Id: Head.U,v 3.0.1.8 1995/07/25 13:40:02 ram Exp $
#
# Generated on Sat Dec  2 15:29:39 EST 1995 [metaconfig 3.0 PL58]

cat >/tmp/c1$$ <<EOF
ARGGGHHHH!!!!!

SCO csh still thinks true is false.  Write to SCO today and tell them that next
year Configure ought to "rm /bin/csh" unless they fix their blasted shell. :-)

(Actually, Configure ought to just patch csh in place.  Hmm.  Hmmmmm.  All
we'd have to do is go in and swap the && and || tokens, wherever they are.)

[End of diatribe. We now return you to your regularly scheduled programming...]
EOF
cat >/tmp/c2$$ <<EOF

OOPS!  You naughty creature!  You didn't run Configure with sh!
I will attempt to remedy the situation by running sh for you...
EOF

true || cat /tmp/c1$$ /tmp/c2$$
true || exec sh $0 $argv:q

(exit $?0) || cat /tmp/c2$$
(exit $?0) || exec sh $0 $argv:q
rm -f /tmp/c1$$ /tmp/c2$$

: compute my invocation name
me=$0
case "$0" in
*/*)
	me=`echo $0 | sed -e 's!.*/\(.*\)!\1!' 2>/dev/null`
	test "$me" || me=$0
	;;
esac

: Proper PATH separator
p_=:
: On OS/2 this directory should exist if this is not floppy only system :-]
if test -d c:/.; then
	p_=\;
	PATH=`cmd /c "echo %PATH%" | tr '\\\\' / `
	OS2_SHELL=`cmd /c "echo %OS2_SHELL%" | tr '\\\\' / | tr '[A-Z]' '[a-z]'`
fi

: Proper PATH setting
paths='/bin /usr/bin /usr/local/bin /usr/ucb /usr/local /usr/lbin'
paths="$paths /opt/bin /opt/local/bin /opt/local /opt/lbin"
paths="$paths /usr/5bin /etc /usr/gnu/bin /usr/new /usr/new/bin /usr/nbin"
paths="$paths /opt/gnu/bin /opt/new /opt/new/bin /opt/nbin"
paths="$paths /sys5.3/bin /sys5.3/usr/bin /bsd4.3/bin /bsd4.3/usr/ucb"
paths="$paths /bsd4.3/usr/bin /usr/bsd /bsd43/bin /usr/ccs/bin"
paths="$paths /etc /usr/lib /usr/ucblib /lib /usr/ccs/lib"
paths="$paths /sbin /usr/sbin /usr/libexec"

for p in $paths
do
	case "$p_$PATH$p_" in
	*$p_$p$p_*) ;;
	*) test -d $p && PATH=$PATH$p_$p ;;
	esac
done

PATH=.$p_$PATH
export PATH

: Sanity checks
if test ! -t 0; then
	echo "Say 'sh $me', not 'sh <$me'"
	exit 1
fi

: On HP-UX, large Configure scripts may exercise a bug in /bin/sh
if test -f /hp-ux -a -f /bin/ksh; then
	if (PATH=.; alias -x) >/dev/null 2>&1; then
		: already under /bin/ksh
	else
		cat <<'EOM'
(Feeding myself to ksh to avoid nasty sh bug in "here document" expansion.)
EOM
		unset ENV
		exec /bin/ksh $0 "$@"
	fi
else
	: Warn them if they use ksh on other systems
	(PATH=.; alias -x) >/dev/null 2>&1 && \
		cat <<EOM
(I see you are using the Korn shell.  Some ksh's blow up on $me,
especially on exotic machines.  If yours does, try the Bourne shell instead.)
EOM
fi

: Configure runs within the UU subdirectory
test -d UU || mkdir UU
cd UU && rm -f ./*

dynamic_ext=''
extensions=''
known_extensions=''
static_ext=''
useposix=''
d_bsd=''
d_eunice=''
d_xenix=''
eunicefix=''
Mcc=''
awk=''
bash=''
bison=''
byacc=''
cat=''
chgrp=''
chmod=''
chown=''
comm=''
compress=''
cp=''
cpio=''
cpp=''
csh=''
date=''
echo=''
egrep=''
emacs=''
expr=''
find=''
flex=''
gcc=''
grep=''
inews=''
ksh=''
less=''
line=''
lint=''
ln=''
lp=''
lpr=''
ls=''
mail=''
mailx=''
make=''
mkdir=''
more=''
mv=''
nroff=''
perl=''
pg=''
pmake=''
pr=''
rm=''
rmail=''
sed=''
sendmail=''
sh=''
shar=''
sleep=''
smail=''
sort=''
submit=''
tail=''
tar=''
tbl=''
test=''
touch=''
tr=''
troff=''
uname=''
uniq=''
uuname=''
vi=''
zcat=''
full_sed=''
libswanted=''
hint=''
myuname=''
osname=''
osvers=''
Author=''
Date=''
Header=''
Id=''
Locker=''
Log=''
RCSfile=''
Revision=''
Source=''
State=''
ar=''
archobjs=''
exe_ext=''
firstmakefile=''
lib_ext=''
obj_ext=''
path_sep=''
afs=''
alignbytes=''
archlib=''
archlibexp=''
d_archlib=''
installarchlib=''
archname=''
myarchname=''
baserev=''
bin=''
binexp=''
installbin=''
byteorder=''
cc=''
gccversion=''
ccflags=''
cppflags=''
ldflags=''
lkflags=''
locincpth=''
optimize=''
cf_email=''
cf_by=''
cf_time=''
contains=''
cpp_stuff=''
cpplast=''
cppminus=''
cpprun=''
cppstdin=''
d_access=''
d_alarm=''
d_attribut=''
d_bcmp=''
d_bcopy=''
d_bzero=''
d_casti32=''
castflags=''
d_castneg=''
d_chown=''
d_chroot=''
d_chsize=''
d_closedir=''
d_void_closedir=''
d_const=''
cryptlib=''
d_crypt=''
d_csh=''
full_csh=''
d_cuserid=''
d_dbl_dig=''
d_difftime=''
d_dlerror=''
d_dlopen=''
d_dlsymun=''
d_dosuid=''
d_suidsafe=''
d_dup2=''
d_fchmod=''
d_fchown=''
d_fcntl=''
d_fd_macros=''
d_fd_set=''
d_fds_bits=''
d_fgetpos=''
d_flexfnam=''
d_flock=''
d_fork=''
d_fsetpos=''
d_Gconvert=''
d_getgrps=''
d_gethent=''
aphostname=''
d_gethname=''
d_phostname=''
d_uname=''
d_getlogin=''
d_getpgrp2=''
d_getpgrp=''
d_getppid=''
d_getprior=''
d_htonl=''
d_isascii=''
d_killpg=''
d_link=''
d_locconv=''
d_lockf=''
d_lstat=''
d_mblen=''
d_mbstowcs=''
d_mbtowc=''
d_memcmp=''
d_memcpy=''
d_memmove=''
d_memset=''
d_mkdir=''
d_mkfifo=''
d_mktime=''
d_msg=''
d_msgctl=''
d_msgget=''
d_msgrcv=''
d_msgsnd=''
d_nice=''
d_open3=''
d_fpathconf=''
d_pathconf=''
d_pause=''
d_pipe=''
d_poll=''
d_portable=''
d_readdir=''
d_rewinddir=''
d_seekdir=''
d_telldir=''
d_readlink=''
d_rename=''
d_rmdir=''
d_safebcpy=''
d_safemcpy=''
d_select=''
d_sem=''
d_semctl=''
d_semget=''
d_semop=''
d_setegid=''
d_seteuid=''
d_setlinebuf=''
d_setlocale=''
d_setpgid=''
d_setpgrp2=''
d_bsdpgrp=''
d_setpgrp=''
d_setprior=''
d_setregid=''
d_setresgid=''
d_setresuid=''
d_setreuid=''
d_setrgid=''
d_setruid=''
d_setsid=''
d_shm=''
d_shmat=''
d_shmatprototype=''
shmattype=''
d_shmctl=''
d_shmdt=''
d_shmget=''
d_oldsock=''
d_socket=''
d_sockpair=''
sockethdr=''
socketlib=''
d_statblks=''
d_stdio_cnt_lval=''
d_stdio_ptr_lval=''
d_stdiobase=''
d_stdstdio=''
stdio_base=''
stdio_bufsiz=''
stdio_cnt=''
stdio_ptr=''
d_index=''
d_strchr=''
d_strcoll=''
d_strctcpy=''
d_strerrm=''
d_strerror=''
d_sysernlst=''
d_syserrlst=''
d_strxfrm=''
d_symlink=''
d_syscall=''
d_sysconf=''
d_system=''
d_tcgetpgrp=''
d_tcsetpgrp=''
d_time=''
timetype=''
clocktype=''
d_times=''
d_truncate=''
d_tzname=''
d_umask=''
d_vfork=''
usevfork=''
d_voidsig=''
signal_t=''
d_volatile=''
d_charvspr=''
d_vprintf=''
d_wait4=''
d_waitpid=''
d_wcstombs=''
d_wctomb=''
dlext=''
cccdlflags=''
ccdlflags=''
d_shrplib=''
dlsrc=''
ld=''
lddlflags=''
shrpdir=''
usedl=''
fpostype=''
gidtype=''
groupstype=''
h_fcntl=''
h_sysfile=''
db_hashtype=''
db_prefixtype=''
i_db=''
i_dbm=''
i_rpcsvcdbm=''
d_dirnamlen=''
direntrytype=''
i_dirent=''
i_dld=''
i_dlfcn=''
i_fcntl=''
i_float=''
i_gdbm=''
i_grp=''
i_limits=''
i_locale=''
i_malloc=''
i_math=''
i_memory=''
i_ndbm=''
i_neterrno=''
i_niin=''
i_sysin=''
d_pwage=''
d_pwchange=''
d_pwclass=''
d_pwcomment=''
d_pwexpire=''
d_pwquota=''
i_pwd=''
i_stddef=''
i_stdlib=''
i_string=''
strings=''
i_sysdir=''
i_sysfile=''
d_voidtty=''
i_bsdioctl=''
i_sysfilio=''
i_sysioctl=''
i_syssockio=''
i_sysndir=''
i_sysparam=''
i_sysselct=''
i_sysstat=''
i_systimes=''
i_systypes=''
i_sysun=''
i_sgtty=''
i_termio=''
i_termios=''
i_systime=''
i_systimek=''
i_time=''
timeincl=''
i_unistd=''
i_utime=''
i_stdarg=''
i_varargs=''
i_varhdr=''
i_vfork=''
intsize=''
libc=''
glibpth=''
libpth=''
loclibpth=''
plibpth=''
xlibpth=''
libs=''
lns=''
lseektype=''
d_mymalloc=''
freetype=''
mallocobj=''
mallocsrc=''
malloctype=''
usemymalloc=''
installman1dir=''
man1dir=''
man1direxp=''
man1ext=''
installman3dir=''
man3dir=''
man3direxp=''
man3ext=''
huge=''
large=''
medium=''
models=''
small=''
split=''
modetype=''
mydomain=''
myhostname=''
phostname=''
c=''
n=''
d_eofnblk=''
eagain=''
o_nonblock=''
rd_nodata=''
groupcat=''
hostcat=''
passcat=''
d_oldarchlib=''
oldarchlib=''
oldarchlibexp=''
orderlib=''
ranlib=''
package=''
spackage=''
patchlevel=''
perladmin=''
perlpath=''
prefix=''
prefixexp=''
installprivlib=''
privlib=''
privlibexp=''
prototype=''
randbits=''
installscript=''
scriptdir=''
scriptdirexp=''
selecttype=''
sig_name=''
sig_num=''
installsitearch=''
sitearch=''
sitearchexp=''
installsitelib=''
sitelib=''
sitelibexp=''
sizetype=''
so=''
sharpbang=''
shsharp=''
spitshell=''
ssizetype=''
startperl=''
startsh=''
stdchar=''
sysman=''
uidtype=''
nm_opt=''
runnm=''
usenm=''
incpath=''
mips=''
mips_type=''
usrinc=''
defvoidused=''
voidflags=''
CONFIG=''

define='define'
undef='undef'
smallmach='pdp11 i8086 z8000 i80286 iAPX286'
rmlist=''

: We must find out about Eunice early
eunicefix=':'
if test -f /etc/unixtovms; then
	eunicefix=/etc/unixtovms
fi
if test -f /etc/unixtovms.exe; then
	eunicefix=/etc/unixtovms.exe
fi

: list of known cpp symbols, sorted alphabetically
al="AMIX BIT_MSF BSD BSD4_3 BSD_NET2 CMU CRAY DGUX DOLPHIN DPX2"
al="$al GO32 GOULD_PN HP700 I386 I80960 I960 Lynx M68000 M68K MACH"
al="$al MIPSEB MIPSEL MSDOS MTXINU MULTIMAX MVS"
al="$al M_COFF M_I186 M_I286 M_I386 M_I8086 M_I86 M_I86SM"
al="$al M_SYS3 M_SYS5 M_SYSIII M_SYSV M_UNIX M_XENIX"
al="$al NeXT OCS88 OSF1 PARISC PC532 PORTAR POSIX"
al="$al PWB R3000 RES RISC6000 RT Sun386i SVR3 SVR4"
al="$al SYSTYPE_BSD SYSTYPE_SVR4 SYSTYPE_SYSV Tek4132 Tek4300"
al="$al UMAXV USGr4 USGr4_2 UTEK UTS UTek UnicomPBB UnicomPBD Utek"
al="$al VMS Xenix286"
al="$al _AIX _AIX32 _AIX370 _AM29000 _COFF _CRAY _CX_UX _EPI"
al="$al _IBMESA _IBMR2 _M88K _M88KBCS_TARGET"
al="$al _MIPSEB _MIPSEL _M_COFF _M_I86 _M_I86SM _M_SYS3"
al="$al _M_SYS5 _M_SYSIII _M_SYSV _M_UNIX _M_XENIX _NLS _PGC_ _R3000"
al="$al _SYSTYPE_BSD _SYSTYPE_BSD43 _SYSTYPE_SVR4"
al="$al _SYSTYPE_SYSV _SYSV3 _U370 _UNICOS"
al="$al __386BSD__ __BIG_ENDIAN __BIG_ENDIAN__ __BSD_4_4__"
al="$al __DGUX__ __DPX2__ __H3050R __H3050RX"
al="$al __LITTLE_ENDIAN __LITTLE_ENDIAN__ __MACH__"
al="$al __MIPSEB __MIPSEB__ __MIPSEL __MIPSEL__"
al="$al __Next__ __OSF1__ __PARAGON__ __PGC__ __PWB __STDC__"
al="$al __SVR4_2__ __UMAXV__"
al="$al ____386BSD____ __alpha __alpha__ __amiga"
al="$al __bsd4_2 __bsd4_2__ __bsdi__ __convex__"
al="$al __host_mips__"
al="$al __hp9000s200 __hp9000s300 __hp9000s400 __hp9000s500"
al="$al __hp9000s500 __hp9000s700 __hp9000s800"
al="$al __hppa __hpux __hp_osf __i286 __i286__ __i386 __i386__"
al="$al __i486 __i486__ __i860 __i860__ __ibmesa __ksr1__ __linux__"
al="$al __m68k __m68k__ __m88100__ __m88k __m88k__"
al="$al __mc68000 __mc68000__ __mc68020 __mc68020__"
al="$al __mc68030 __mc68030__ __mc68040 __mc68040__"
al="$al __mc88100 __mc88100__ __mips __mips__"
al="$al __motorola__ __osf__ __pa_risc __sparc__ __stdc__"
al="$al __sun __sun__ __svr3__ __svr4__ __ultrix __ultrix__"
al="$al __unix __unix__ __uxpm__ __uxps__ __vax __vax__"
al="$al _host_mips _mips _unix"
al="$al a29k aegis aix aixpc alliant alpha am29000 amiga ansi ardent"
al="$al apollo ardent att386 att3b"
al="$al bsd bsd43 bsd4_2 bsd4_3 bsd4_4 bsdi bull"
al="$al cadmus clipper concurrent convex cray ctix"
al="$al dmert encore gcos gcx gimpel gould"
al="$al hbullx20 hcx host_mips hp200 hp300 hp700 hp800"
al="$al hp9000 hp9000s300 hp9000s400 hp9000s500"
al="$al hp9000s700 hp9000s800 hp9k8 hppa hpux"
al="$al i186 i286 i386 i486 i8086"
al="$al i80960 i860 iAPX286 ibm ibm032 ibmrt interdata is68k"
al="$al ksr1 linux luna luna88k m68k m88100 m88k"
al="$al mc300 mc500 mc68000 mc68010 mc68020 mc68030"
al="$al mc68040 mc68060 mc68k mc68k32 mc700"
al="$al mc88000 mc88100 merlin mert mips mvs n16"
al="$al ncl_el ncl_mr"
al="$al news1500 news1700 news1800 news1900 news3700"
al="$al news700 news800 news900 ns16000 ns32000"
al="$al ns32016 ns32332 ns32k nsc32000 os osf"
al="$al parisc pc532 pdp11 plexus posix pyr"
al="$al riscix riscos scs sequent sgi sinix sony sony_news"
al="$al sonyrisc sparc sparclite spectrum stardent stratos"
al="$al sun sun3 sun386 svr4 sysV68 sysV88"
al="$al titan tower tower32 tower32_200 tower32_600 tower32_700"
al="$al tower32_800 tower32_850 tss u370 u3b u3b2 u3b20 u3b200"
al="$al u3b20d u3b5 ultrix unix unixpc unos vax venix vms"
al="$al xenix z8000"

groupstype=''
i_whoami=''
: default library list
libswanted=''
: set useposix=false in your hint file to disable the POSIX extension.
useposix=true
: Define several unixisms.  These can be overridden in hint files.
exe_ext='' 
: Extra object files, if any, needed on this platform.
archobjs=''
: Possible local include directories to search.
: Set locincpth to "" in a hint file to defeat local include searches.
locincpth="/usr/local/include /opt/local/include /usr/gnu/include"
locincpth="$locincpth /opt/gnu/include /usr/GNU/include /opt/GNU/include"
:
: no include file wanted by default
inclwanted=''

: change the next line if compiling for Xenix/286 on Xenix/386
xlibpth='/usr/lib/386 /lib/386'

: Possible local library directories to search.
loclibpth="/usr/local/lib /opt/local/lib /usr/gnu/lib"
loclibpth="$loclibpth /opt/gnu/lib /usr/GNU/lib /opt/GNU/lib"

: general looking path for locating libraries
glibpth="/lib/pa1.1 /usr/shlib /usr/lib/large /lib /usr/lib"
glibpth="$glibpth $xlibpth /lib/large /usr/lib/small /lib/small"
glibpth="$glibpth /usr/ccs/lib /usr/ucblib /usr/shlib"

: Private path used by Configure to find libraries.  Its value
: is prepended to libpth. This variable takes care of special
: machines, like the mips.  Usually, it should be empty.
plibpth=''

: full support for void wanted by default
defvoidused=15

: List of libraries we want.
libswanted='net socket inet nsl nm ndbm gdbm dbm db malloc dl'
libswanted="$libswanted dld ld sun m c cposix posix ndir dir crypt"
libswanted="$libswanted ucb bsd BSD PW x"
: We probably want to search /usr/shlib before most other libraries.
: This is only used by the lib/ExtUtils/MakeMaker.pm routine extliblist.
glibpth=`echo " $glibpth " | sed -e 's! /usr/shlib ! !'`
glibpth="/usr/shlib $glibpth"
: Do not use vfork unless overridden by a hint file.
usevfork=false

: script used to extract .SH files with variable substitutions
cat >extract <<'EOS'
CONFIG=true
echo "Doing variable substitutions on .SH files..."
if test -f MANIFEST; then
	shlist=`awk '{print $1}' <MANIFEST | grep '\.SH'`
	: Pick up possible extension manifests.
	for dir in ext/* ; do
		if test -f $dir/MANIFEST; then
			xxx=`awk '{print $1}' < $dir/MANIFEST | 
				sed -n "/\.SH$/ s@^@$dir/@p"`
			shlist="$shlist $xxx"
		fi
	done
	set x $shlist
else
	echo "(Looking for .SH files under the current directory.)"
	set x `find . -name "*.SH" -print`
fi
shift
case $# in
0) set x *.SH; shift;;
esac
if test ! -f $1; then
	shift
fi
for file in $*; do
	case "$file" in
	*/*)
		dir=`expr X$file : 'X\(.*\)/'`
		file=`expr X$file : 'X.*/\(.*\)'`
		(cd $dir && . ./$file)
		;;
	*)
		. ./$file
		;;
	esac
done
if test -f config_h.SH; then
	if test ! -f config.h; then
	: oops, they left it out of MANIFEST, probably, so do it anyway.
	. ./config_h.SH
	fi
fi
EOS

: produce awk script to parse command line options
cat >options.awk <<'EOF'
BEGIN {
	optstr = "dD:eEf:hKOrsSU:V";	# getopt-style specification

	len = length(optstr);
	for (i = 1; i <= len; i++) {
		c = substr(optstr, i, 1);
		if (i < len) a = substr(optstr, i + 1, 1); else a = "";
		if (a == ":") {
			arg[c] = 1;
			i++;
		}
		opt[c] = 1;
	}
}
{
	expect = 0;
	str = $0;
	if (substr(str, 1, 1) != "-") {
		printf("'%s'\n", str);
		next;
	}
	len = length($0);
	for (i = 2; i <= len; i++) {
		c = substr(str, i, 1);
		if (!opt[c]) {
			printf("-%s\n", substr(str, i));
			next;
		}
		printf("-%s\n", c);
		if (arg[c]) {
			if (i < len)
				printf("'%s'\n", substr(str, i + 1));
			else
				expect = 1;
			next;
		}
	}
}
END {
	if (expect)
		print "?";
}
EOF

: process the command line options
set X `for arg in "$@"; do echo "X$arg"; done |
	sed -e s/X// | awk -f options.awk`
eval "set $*"
shift
rm -f options.awk

: set up default values
fastread=''
reuseval=false
config_sh=''
alldone=''
error=''
silent=''
extractsh=''
override=''
knowitall=''
rm -f optdef.sh

: option parsing
while test $# -gt 0; do
	case "$1" in
	-d) shift; fastread=yes;;
	-e) shift; alldone=cont;;
	-f)
		shift
		cd ..
		if test -r "$1"; then
			config_sh="$1"
		else
			echo "$me: cannot read config file $1." >&2
			error=true
		fi
		cd UU
		shift;;
	-h) shift; error=true;;
	-r) shift; reuseval=true;;
	-s) shift; silent=true;;
	-E) shift; alldone=exit;;
	-K) shift; knowitall=true;;
	-O) shift; override=true;;
	-S) shift; extractsh=true;;
	-D)
		shift
		case "$1" in
		*=)
			echo "$me: use '-U symbol=', not '-D symbol='." >&2
			echo "$me: ignoring -D $1" >&2
			;;
		*=*) echo "$1" | \
				sed -e "s/'/'\"'\"'/g" -e "s/=\(.*\)/='\1'/" >> optdef.sh;;
		*) echo "$1='define'" >> optdef.sh;;
		esac
		shift
		;;
	-U)
		shift
		case "$1" in
		*=) echo "$1" >> optdef.sh;;
		*=*)
			echo "$me: use '-D symbol=val', not '-U symbol=val'." >&2
			echo "$me: ignoring -U $1" >&2
			;;
		*) echo "$1='undef'" >> optdef.sh;;
		esac
		shift
		;;
	-V) echo "$me generated by metaconfig 3.0 PL58." >&2
		exit 0;;
	--) break;;
	-*) echo "$me: unknown option $1" >&2; shift; error=true;;
	*) break;;
	esac
done

case "$error" in
true)
	cat >&2 <<EOM
Usage: $me [-dehrEKOSV] [-f config.sh] [-D symbol] [-D symbol=value]
                 [-U symbol] [-U symbol=]
  -d : use defaults for all answers.
  -e : go on without questioning past the production of config.sh.
  -f : specify an alternate default configuration file.
  -h : print this help message and exit (with an error status).
  -r : reuse C symbols value if possible (skips costly nm extraction).
  -s : silent mode, only echoes questions and essential information.
  -D : define symbol to have some value:
         -D symbol         symbol gets the value 'define'
         -D symbol=value   symbol gets the value 'value'
  -E : stop at the end of questions, after having produced config.sh.
  -K : do not use unless you know what you are doing.
  -O : let -D and -U override definitions from loaded configuration file.
  -S : perform variable substitutions on all .SH files (can mix with -f)
  -U : undefine symbol:
         -U symbol    symbol gets the value 'undef'
         -U symbol=   symbol gets completely empty
  -V : print version number and exit (with a zero status).
EOM
	exit 1
	;;
esac

exec 4>&1
case "$silent" in
true) exec 1>/dev/null;;
esac

: run the defines and the undefines, if any, but leave the file out there...
touch optdef.sh
. ./optdef.sh

case "$extractsh" in
true)
	case "$config_sh" in
	'') config_sh='config.sh'; config='./config.sh';;
	/*) config="$config_sh";;
	*) config="./$config_sh";;
	esac
	echo " "
	echo "Fetching answers from $config_sh..."
	cd ..
	. $config
	test "$override" && . ./optdef.sh
	echo " "
	. ./UU/extract
	rm -rf UU
	echo "Done."
	exit 0
	;;
esac

: set package name
package=perl5
first=`echo $package | sed -e 's/^\(.\).*/\1/'`
last=`echo $package | sed -e 's/^.\(.*\)/\1/'`
case "`echo AbyZ | tr '[:lower:]' '[:upper:]' 2>/dev/null`" in
ABYZ) spackage=`echo $first | tr '[:lower:]' '[:upper:]'`$last;;
*) spackage=`echo $first | tr '[a-z]' '[A-Z]'`$last;;
esac

: Eunice requires " " instead of "", can you believe it
echo " "
: Here we go...
echo "Beginning of configuration questions for $package."

trap 'echo " "; test -d ../UU && rm -rf X $rmlist; exit 1' 1 2 3 15

: Some greps do not return status, grrr.
echo "grimblepritz" >grimble
if grep blurfldyick grimble >/dev/null 2>&1 ; then
	contains=contains
elif grep grimblepritz grimble >/dev/null 2>&1 ; then
	contains=grep
else
	contains=contains
fi
rm -f grimble
: the following should work in any shell
case "$contains" in
contains*)
	echo " "
	echo "AGH!  Grep doesn't return a status.  Attempting remedial action."
	cat >contains <<'EOSS'
grep "$1" "$2" >.greptmp && cat .greptmp && test -s .greptmp
EOSS
chmod +x contains
esac

: first determine how to suppress newline on echo command
echo " "
echo "Checking echo to see how to suppress newlines..."
(echo "hi there\c" ; echo " ") >.echotmp
if $contains c .echotmp >/dev/null 2>&1 ; then
	echo "...using -n."
	n='-n'
	c=''
else
	cat <<'EOM'
...using \c
EOM
	n=''
	c='\c'
fi
echo $n "The star should be here-->$c"
echo '*'
rm -f .echotmp

: Now test for existence of everything in MANIFEST
echo " "
if test -f ../MANIFEST; then
	echo "First let's make sure your kit is complete.  Checking..." >&4
	awk '$1 !~ /PACK[A-Z]+/ {print $1}' ../MANIFEST | split -50
	rm -f missing
	for filelist in x??; do
		(cd ..; ls `cat UU/$filelist` >/dev/null 2>>UU/missing)
	done
	if test -s missing; then
		cat missing >&4
		cat >&4 <<'EOM'

THIS PACKAGE SEEMS TO BE INCOMPLETE.

You have the option of continuing the configuration process, despite the
distinct possibility that your kit is damaged, by typing 'y'es.  If you
do, don't blame me if something goes wrong.  I advise you to type 'n'o
and contact the author (lwall@netlabs.com).

EOM
		echo $n "Continue? [n] $c" >&4
		read ans
		case "$ans" in
		y*)
			echo "Continuing..." >&4
			rm -f missing
			;;
		*)
			echo "ABORTING..." >&4
			kill $$
			;;
		esac
	else
		echo "Looks good..." >&4
	fi
else
	echo "There is no MANIFEST file.  I hope your kit is complete !"
fi
rm -f missing x??

: compute the number of columns on the terminal for proper question formatting
case "$COLUMNS" in
'') COLUMNS='80';;
esac

: set up the echo used in my read
myecho="case \"\$xxxm\" in
'') echo $n \"\$rp $c\" >&4;;
*) case \"\$rp\" in
	'') echo $n \"[\$xxxm] $c\";;
	*)
		if test \`echo \"\$rp [\$xxxm]  \" | wc -c\` -ge $COLUMNS; then
			echo \"\$rp\" >&4
			echo $n \"[\$xxxm] $c\" >&4
		else
			echo $n \"\$rp [\$xxxm] $c\" >&4
		fi
		;;
	esac;;
esac"

: now set up to do reads with possible shell escape and default assignment
cat <<EOSC >myread
xxxm=\$dflt
$myecho
ans='!'
case "\$fastread" in
yes) case "\$dflt" in
	'') ;;
	*) ans='';
		case "\$silent-\$rp" in
		true-) ;;
		*) echo " " >&4;;
		esac;;
	esac;;
*) case "\$silent" in
	true) case "\$rp" in
		'') ans='';;
		esac;;
	esac;;
esac
while expr "X\$ans" : "X!" >/dev/null; do
	read answ
	set x \$xxxm
	shift
	aok=''; eval "ans=\"\$answ\"" && aok=y
	case  "\$answ" in
	"\$ans")
		case "\$ans" in
		\\&*)
			set x \`expr "X\$ans" : "X&\(.*\)\$"\`
			shift
			case "\$1" in
			-d)
				fastread=yes
				echo "(OK, I'll run with -d after this question.)"
				;;
			-*)
				echo "*** Sorry, \$1 not supported yet."
				;;
			esac
			$myecho
			ans=!
			;;
		"!")
			sh 1>&4
			echo " "
			$myecho
			;;
		!*)
			set x \`expr "X\$ans" : "X!\(.*\)\$"\`
			shift
			sh 1>&4 -c "\$*"
			echo " "
			$myecho
			;;
		esac;;
	*)
		case "\$aok" in
		y)
			echo "*** Substitution done -- please confirm."
			xxxm="\$ans"
			ans=\`echo $n "\$ans$c" | tr '\012' ' '\`
			xxxm="\$ans"
			ans=!
			;;
		*)
			echo "*** Error -- try again."
			ans=!
			;;
		esac
		$myecho
		;;
	esac
	case "\$ans\$xxxm\$nostick" in
	'')
		ans=!
		$myecho
		;;
	esac
done
case "\$ans" in
'') ans="\$xxxm";;
esac
EOSC

: create .config dir to save info across Configure sessions
test -d ../.config || mkdir ../.config
cat >../.config/README <<EOF
This directory created by Configure to save information that should
persist across sessions.

You may safely delete it if you wish.
EOF

: general instructions
needman=true
firsttime=true
user=`( (logname) 2>/dev/null || whoami) 2>&1`
if $contains "^$user\$" ../.config/instruct >/dev/null 2>&1; then
	firsttime=false
	echo " "
	rp='Would you like to see the instructions?'
	dflt=n
	. ./myread
	case "$ans" in
	[yY]*) ;;
	*) needman=false;;
	esac
fi
if $needman; then
	cat <<EOH
 
This installation shell script will examine your system and ask you questions
to determine how the perl5 package should be installed. If you get
stuck on a question, you may use a ! shell escape to start a subshell or
execute a command.  Many of the questions will have default answers in square
brackets; typing carriage return will give you the default.

On some of the questions which ask for file or directory names you are allowed
to use the ~name construct to specify the login directory belonging to "name",
even if you don't have a shell which knows about that.  Questions where this is
allowed will be marked "(~name ok)".

EOH
	rp=''
	dflt='Type carriage return to continue'
	. ./myread
	cat <<'EOH'

The prompter used in this script allows you to use shell variables and
backticks in your answers.  You may use $1, $2, etc...  to refer to the words
in the default answer, as if the default line was a set of arguments given to a
script shell.  This means you may also use $* to repeat the whole default line,
so you do not have to re-type everything to add something to the default.

Everytime there is a substitution, you will have to confirm.  If there is an
error (e.g. an unmatched backtick), the default answer will remain unchanged
and you will be prompted again.

If you are in a hurry, you may run 'Configure -d'.  This will bypass nearly all
the questions and use the computed defaults (or the previous answers if there
was already a config.sh file). Type 'Configure -h' for a list of options.
You may also start interactively and then answer '& -d' at any prompt to turn
on the non-interactive behaviour for the remaining of the execution.

EOH
	. ./myread
	cat <<EOH

Much effort has been expended to ensure that this shell script will run on any
Unix system.  If despite that it blows up on yours, your best bet is to edit
Configure and run it again.  If you can't run Configure for some reason,
you'll have to generate a config.sh file by hand.  Whatever problems you
have, let me (lwall@netlabs.com) know how I blew it.

This installation script affects things in two ways:

1) it may do direct variable substitutions on some of the files included
   in this kit.
2) it builds a config.h file for inclusion in C programs.  You may edit
   any of these files as the need arises after running this script.

If you make a mistake on a question, there is no easy way to back up to it
currently.  The easiest thing to do is to edit config.sh and rerun all the SH
files.  Configure will offer to let you do this before it runs the SH files.

EOH
	dflt='Type carriage return to continue'
	. ./myread
	case "$firsttime" in
	true) echo $user >>../.config/instruct;;
	esac
fi

: see if sh knows # comments
echo " "
echo "Checking your sh to see if it knows about # comments..." >&4
if `sh -c '#' >/dev/null 2>&1`; then
	echo "Your sh handles # comments correctly."
	shsharp=true
	spitshell=cat
	echo " "
	echo "Okay, let's see if #! works on this system..."
	xcat=/bin/cat
	test -f $xcat || xcat=/usr/bin/cat
	echo "#!$xcat" >try
	$eunicefix try
	chmod +x try
	./try > today
	if test -s today; then
		echo "It does."
		sharpbang='#!'
	else
		echo "#! $xcat" > try
		$eunicefix try
		chmod +x try
		./try > today
		if test -s today; then
			echo "It does."
			sharpbang='#! '
		else
			echo "It's just a comment."
			sharpbang=': use '
		fi
	fi
else
	echo "Your sh doesn't grok # comments--I will strip them later on."
	shsharp=false
	cd ..
	echo "exec grep -v '^[ 	]*#'" >spitshell
	chmod +x spitshell
	$eunicefix spitshell
	spitshell=`pwd`/spitshell
	cd UU
	echo "I presume that if # doesn't work, #! won't work either!"
	sharpbang=': use '
fi
rm -f try today

: figure out how to guarantee sh startup
echo " "
echo "Checking out how to guarantee sh startup..." >&4
case "$SYSTYPE" in
*bsd*|sys5*) startsh=$sharpbang"/$SYSTYPE/bin/sh";;
*) startsh=$sharpbang'/bin/sh';;
esac
echo "Let's see if '$startsh' works..."
cat >try <<EOSS
$startsh
set abc
test "$?abc" != 1
EOSS

chmod +x try
$eunicefix try
if ./try; then
	echo "Yup, it does."
else
echo "Nope.  You may have to fix up the shell scripts to make sure sh runs them."
fi
rm -f try

: find out where common programs are
echo " "
echo "Locating common programs..." >&4
cat <<EOSC >loc
$startsh
case \$# in
0) exit 1;;
esac
thing=\$1
shift
dflt=\$1
shift
for dir in \$*; do
	case "\$thing" in
	.)
	if test -d \$dir/\$thing; then
		echo \$dir
		exit 0
	fi
	;;
	*)
	for thisthing in \$dir/\$thing; do
		: just loop through to pick last item
	done
	if test -f \$thisthing; then
		echo \$thisthing
		exit 0
	elif test -f \$dir/\$thing.exe; then
		: on Eunice apparently
		echo \$dir/\$thing
		exit 0
	fi
	;;
	esac
done
echo \$dflt
exit 1
EOSC
chmod +x loc
$eunicefix loc
loclist="
awk
cat
comm
cp
echo
expr
find
grep
ln
ls
mkdir
rm
sed
sort
tail
touch
tr
uniq
"
trylist="
Mcc
byacc
cpp
csh
date
egrep
line
nroff
perl
test
uname
"
pth=`echo $PATH | sed -e "s/$p_/ /g"`
pth="$pth /lib /usr/lib"
for file in $loclist; do
	xxx=`./loc $file $file $pth`
	eval $file=$xxx
	eval _$file=$xxx
	case "$xxx" in
	/*)
		echo $file is in $xxx.
		;;
	?:[\\/]*)
		echo $file is in $xxx.
		;;
	*)
		echo "I don't know where '$file' is, and my life depends on it." >&4
		echo "Go find a public domain implementation or fix your PATH setting!" >&4
		exit 1
		;;
	esac
done
echo " "
echo "Don't worry if any of the following aren't found..."
say=offhand
for file in $trylist; do
	xxx=`./loc $file $file $pth`
	eval $file=$xxx
	eval _$file=$xxx
	case "$xxx" in
	/*)
		echo $file is in $xxx.
		;;
	?:[\\/]*)
		echo $file is in $xxx.
		;;
	*)
		echo "I don't see $file out there, $say."
		say=either
		;;
	esac
done
case "$egrep" in
egrep)
	echo "Substituting grep for egrep."
	egrep=$grep
	;;
esac
case "$test" in
test)
	echo "Hopefully test is built into your sh."
	;;
*)
	if `sh -c "PATH= test true" >/dev/null 2>&1`; then
		echo "Using the test built into your sh."
		test=test
		_test=test
	fi
	;;
esac
case "$echo" in
echo)
	echo "Hopefully echo is built into your sh."
	;;
'') ;;
*)
	echo " "
echo "Checking compatibility between $echo and builtin echo (if any)..." >&4
	$echo $n "hi there$c" >foo1
	echo $n "hi there$c" >foo2
	if cmp foo1 foo2 >/dev/null 2>&1; then
		echo "They are compatible.  In fact, they may be identical."
	else
		case "$n" in
		'-n') n='' c='\c';;
		*) n='-n' c='';;
		esac
		cat <<FOO
They are not compatible!  You are probably running ksh on a non-USG system.
I'll have to use $echo instead of the builtin, since Bourne shell doesn't
have echo built in and we may have to run some Bourne shell scripts.  That
means I'll have to use '$n$c' to suppress newlines now.  Life is ridiculous.

FOO
		$echo $n "The star should be here-->$c"
		$echo "*"
	fi
	$rm -f foo1 foo2
	;;
esac

: determine whether symbolic links are supported
echo " "
$touch blurfl
if $ln -s blurfl sym > /dev/null 2>&1 ; then
	echo "Symbolic links are supported." >&4
	lns="$ln -s"
else
	echo "Symbolic links are NOT supported." >&4
	lns="$ln"
fi
$rm -f blurfl sym

: see whether [:lower:] and [:upper:] are supported character classes
echo " "
up='[A-Z]'
low='[a-z]'
case "`echo AbyZ | $tr '[:lower:]' '[:upper:]' 2>/dev/null`" in
ABYZ)
	echo "Good, your tr supports [:lower:] and [:upper:] to convert case." >&4
	up='[:upper:]'
	low='[:lower:]'
	;;
*)
	echo "Your tr only supports [a-z] and [A-Z] to convert case." >&4
	;;
esac
: set up the translation script tr, must be called with ./tr of course
cat >tr <<EOSC
$startsh
case "\$1\$2" in
'[A-Z][a-z]') exec $tr '$up' '$low';;
'[a-z][A-Z]') exec $tr '$low' '$up';;
esac
exec $tr "\$@"
EOSC
chmod +x tr
$eunicefix tr

: Try to determine whether config.sh was made on this system
case "$config_sh" in
'')
myuname=`( ($uname -a) 2>/dev/null || hostname) 2>&1`
myuname=`echo $myuname | $sed -e 's/^[^=]*=//' -e 's/\///g' | \
	./tr '[A-Z]' '[a-z]' | tr '\012' ' '`
newmyuname="$myuname"
dflt=n
case "$knowitall" in
'')
	if test -f ../config.sh; then
		if $contains myuname= ../config.sh >/dev/null 2>&1; then
			eval "`grep myuname= ../config.sh`"
		fi
		if test "X$myuname" = "X$newmyuname"; then
			dflt=y
		fi
	fi
	;;
*) dflt=y;;
esac

: Get old answers from old config file if Configure was run on the
: same system, otherwise use the hints.
hint=default
cd ..
if test -f config.sh; then
	echo " "
	rp="I see a config.sh file.  Shall I use it to set the defaults?"
	. UU/myread
	case "$ans" in
	n*|N*) echo "OK, I'll ignore it."; mv config.sh config.sh.old;;
	*)  echo "Fetching default answers from your old config.sh file..." >&4
		tmp_n="$n"
		tmp_c="$c"
		. ./config.sh
		cp config.sh UU
		n="$tmp_n"
		c="$tmp_c"
		hint=previous
		;;
	esac
fi
if test ! -f config.sh; then
	$cat <<EOM

First time through, eh?  I have some defaults handy for the following systems:

EOM
	cd hints; ls -C *.sh | $sed 's/\.sh/   /g' >&4
	dflt=''
	: Half the following guesses are probably wrong... If you have better
	: tests or hints, please send them to lwall@netlabs.com
	: The metaconfig authors would also appreciate a copy...
	$test -f /irix && osname=irix
	$test -f /xenix && osname=sco_xenix
	$test -f /dynix && osname=dynix
	$test -f /dnix && osname=dnix
 	$test -f /unicos && osname=unicos && osvers=`$uname -r`
	$test -f /bin/mips && /bin/mips && osname=mips
	$test -d /NextApps && set X `hostinfo | grep 'NeXT Mach.*:' | \
		$sed -e 's/://' -e 's/\./_/'` && osname=next && osvers=$4
	$test -d /usr/apollo/bin && osname=apollo
	$test -f /etc/saf/_sactab && osname=svr4
	$test -d /usr/include/minix && osname=minix
	if $test -d /MachTen; then
		osname=machten 
		if $test -x /sbin/version; then
			osvers=`/sbin/version | $awk '{print $2}' | 
			$sed -e 's/[A-Za-z]$//'`
		elif $test -x /usr/etc/version; then
			osvers=`/usr/etc/version | $awk '{print $2}' | 
			$sed -e 's/[A-Za-z]$//'`
		else
			osvers="$2.$3"
		fi
	fi
	if $test -f $uname; then
		set X $myuname
		shift

		case "$5" in
		fps*) osname=fps ;;
		mips*)
			case "$4" in
			umips) osname=umips ;;
			*) osname=mips ;;
			esac;;
		[23]100) osname=mips ;;
		next*) osname=next ;;
		news*) osname=news ;;
		i386*)
			if $test -f /etc/kconfig; then
				osname=isc
				if test "$lns" = "ln -s"; then
					osvers=4
				elif $contains _SYSV3 /usr/include/stdio.h > /dev/null 2>&1 ; then
					osvers=3
				elif $contains _POSIX_SOURCE /usr/include/stdio.h > /dev/null 2>&1 ; then
					osvers=2
				fi
			fi
			;;
		esac

		case "$1" in
		aix) osname=aix
			tmp=`( (oslevel) 2>/dev/null || echo "not found") 2>&1`
			case "$tmp" in
			'not found') osvers="$4"."$3" ;;
			'<3240'|'<>3240') osvers=3.2.0 ;;
			'=3240'|'>3240'|'<3250'|'<>3250') osvers=3.2.4 ;;
			'=3250'|'>3250') osvers=3.2.5 ;;
			*) osvers=$tmp;;
			esac
			;;
		dnix) osname=dnix
			osvers="$3"
			;;
		domainos) osname=apollo
			osvers="$3"
			;;
		dgux) osname=dgux 
			osvers="$3"
			;;
		freebsd) osname=freebsd 
			osvers="$3" ;;
		genix) osname=genix ;;
		hp*) osname=hpux 
			case "$3" in
			*.08.*) osvers=9 ;;
			*.09.*) osvers=9 ;;
			*.10.*) osvers=10 ;;
			*)	osvers="$3" ;;
			esac
			;;
		irix) osname=irix
			case "$3" in
			4*) osvers=4 ;;
			5*) osvers=5 ;;
			*)	osvers="$3" ;;
			esac
			;;
		linux) osname=linux
			case "$3" in
			1*) osvers=1 ;;
			*)	osvers="$3" ;;
			esac
			;;
		netbsd*) osname=netbsd 
			osvers="$3"
			;;
		bsd386) osname=bsd386
			osvers=`$uname -r`
			;;
		next*) osname=next ;;
		solaris) osname=solaris
			case "$3" in
			5*) osvers=`echo $3 | $sed 's/^5/2/g'` ;;
			*)	osvers="$3" ;;
			esac
			;;
		sunos) osname=sunos
			case "$3" in
			5*) osname=solaris
				osvers=`echo $3 | $sed 's/^5/2/g'` ;;
			*)	osvers="$3" ;;
			esac
			;;
		titanos) osname=titanos
			case "$3" in
			1*) osvers=1 ;;
			2*) osvers=2 ;;
			3*) osvers=3 ;;
			4*) osvers=4 ;;
			*)	osvers="$3" ;;
			esac
			;;
		ultrix) osname=ultrix
			osvers="$3"
			;;
		osf1)	case "$5" in
				alpha)
					osname=dec_osf
					osvers=`echo "$3" | sed 's/^[vt]//'`
					;;
			hp*)	osname=hp_osf1	;;
			mips)	osname=mips_osf1 ;;
			esac
			;;
		uts) osname=uts 
			osvers="$3"
			;;
		$2) case "$osname" in
			*isc*) ;;
			*freebsd*) ;;
 			svr*)
				: svr4.x or possibly later
				case "svr$3" in	
				${osname}*)
					osname=svr$3
					osvers=$4
					;;
				esac
				case "$osname" in
				svr4.0)
					: Check for ESIX
					if test -f /stand/boot ; then
						eval `grep '^INITPROG=[a-z/0-9]*$' /stand/boot`
						if test -n "$INITPROG" -a -f "$INITPROG"; then
			isesix=`strings -a $INITPROG|grep 'ESIX SYSTEM V/386 Release 4.0'`
							if test -n "$isesix"; then
								osname=esix4
							fi
						fi
					fi
					;;
				esac
				;;
			*)	if test -f /etc/systemid; then
					osname=sco
					set `echo $3 | $sed 's/\./ /g'` $4
					if $test -f sco_$1_$2_$3.sh; then
						osvers=$1.$2.$3
					elif $test -f sco_$1_$2.sh; then
						osvers=$1.$2
					elif $test -f sco_$1.sh; then
						osvers=$1
					fi
				else
					case "$osname" in
					'') : Still unknown.  Probably a generic Sys V.
						osname="sysv"
						osvers="$3"
						;;
					esac
				fi
				;;
			esac
			;;
		*)	case "$osname" in
			'') : Still unknown.  Probably a generic BSD.
				osname="$1"
				osvers="$3"
				;;
			esac
			;;
		esac
	else
		if test -f /vmunix -a -f news_os.sh; then
			(what /vmunix | ../UU/tr '[A-Z]' '[a-z]') > ../UU/kernel.what 2>&1
			if $contains news-os ../UU/kernel.what >/dev/null 2>&1; then
				osname=news_os
			fi
			$rm -f ../UU/kernel.what
		elif test -d c:/.; then
			set X $myuname
			osname=os2
			osvers="$5"
		fi
	fi
	
	: Now look for a hint file osname_osvers, unless one has been
	: specified already.
	case "$hintfile" in
	''|' ')
		file=`echo "${osname}_${osvers}" | $sed -e 's@\.@_@g' -e 's@_$@@'`
		: Also try without trailing minor version numbers.
		xfile=`echo $file | $sed -e 's@_[^_]*$@@'`
		xxfile=`echo $xfile | $sed -e 's@_[^_]*$@@'`
		xxxfile=`echo $xxfile | $sed -e 's@_[^_]*$@@'`
		xxxxfile=`echo $xxxfile | $sed -e 's@_[^_]*$@@'`
		case "$file" in
		'') dflt=none ;;
		*)  case "$osvers" in
			'') dflt=$file
				;;
			*)  if $test -f $file.sh ; then
					dflt=$file
				elif $test -f $xfile.sh ; then
					dflt=$xfile
				elif $test -f $xxfile.sh ; then
					dflt=$xxfile
				elif $test -f $xxxfile.sh ; then
					dflt=$xxxfile
				elif $test -f $xxxxfile.sh ; then
					dflt=$xxxxfile
				elif $test -f "${osname}.sh" ; then
					dflt="${osname}"
				else
					dflt=none
				fi
				;;
			esac
			;;
		esac
		;;
	*)
		dflt=`echo $hintfile | $sed 's/\.sh$//'`
		;;
	esac

	$cat <<EOM

You may give one or more space-separated answers, or "none" if appropriate.
If your OS version has no hints, DO NOT give a wrong version -- say "none".

EOM
	rp="Which of these apply, if any?"
	. ../UU/myread
	tans=$ans
	for file in $tans; do
		if $test -f $file.sh; then
			. ./$file.sh
			$cat $file.sh >> ../UU/config.sh
		elif $test X$tans = X -o X$tans = Xnone ; then
			: nothing
		else
			: Give one chance to correct a possible typo.
			echo "$file.sh does not exist"
			dflt=$file
			rp="hint to use instead?"
			. ../UU/myread
			for file in $ans; do
				if $test -f "$file.sh"; then
					. ./$file.sh
					$cat $file.sh >> ../UU/config.sh
				elif $test X$ans = X -o X$ans = Xnone ; then
					: nothing
				else
					echo "$file.sh does not exist -- ignored."
				fi
			done
		fi
	done

	hint=recommended
	: Remember our hint file for later.
	if $test -f "$file.sh" ; then
		hintfile="$file"
	else
		hintfile=''
	fi

	cd ..
fi
cd UU
;;
*)
	echo " "
	echo "Fetching default answers from $config_sh..." >&4
	tmp_n="$n"
	tmp_c="$c"
	cd ..
	cp $config_sh config.sh 2>/dev/null
	. ./config.sh
	cd UU
	cp ../config.sh .
	n="$tmp_n"
	c="$tmp_c"
	hint=previous
	;;
esac
test "$override" && . ./optdef.sh
myuname="$newmyuname"

: Restore computed paths
for file in $loclist $trylist; do
	eval $file="\$_$file"
done

cat << EOM

Configure uses the operating system name and version to set some defaults.
The default value is probably right if the name rings a bell. Otherwise,
since spelling matters for me, either accept the default or answer "none"
to leave it blank.

EOM
case "$osname" in
	''|' ')
		case "$hintfile" in
		''|' '|none) dflt=none ;;
		*)  dflt=`echo $hintfile | $sed -e 's/\.sh$//' -e 's/_.*$//'` ;;
		esac
		;;
	*) dflt="$osname" ;;
esac
rp="Operating system name?"
. ./myread
case "$ans" in
none)  osname='' ;;
*) osname=`echo "$ans" | $sed -e 's/[ 	][	]*/_/g' | ./tr '[A-Z]' '[a-z]'`;;
esac
: who configured the system
cf_time=`$date 2>&1`
(logname > .temp) >/dev/null 2>&1
$test -s .temp || (whoami > .temp) >/dev/null 2>&1
$test -s .temp || echo unknown > .temp
cf_by=`$cat .temp`
$rm -f .temp

: determine the architecture name
echo " "
if xxx=`./loc arch blurfl $pth`; $test -f "$xxx"; then
	tarch=`arch`"-$osname"
elif xxx=`./loc uname blurfl $pth`; $test -f "$xxx" ; then
	if uname -m > tmparch 2>&1 ; then
		tarch=`$sed -e 's/ /_/g' -e 's/$/'"-$osname/" tmparch`
	else
		tarch="$osname"
	fi
	$rm -f tmparch
else
	tarch="$osname"
fi
case "$myarchname" in
''|"$tarch") ;;
*)
	echo "(Your architecture name used to be $myarchname.)"
	archname=''
	;;
esac
case "$archname" in
'') dflt="$tarch";;
*) dflt="$archname";;
esac
rp='What is your architecture name'
. ./myread
archname="$ans"
myarchname="$tarch"

: is AFS running?
echo " "
if test -d /afs; then
	echo "AFS may be running... I'll be extra cautious then..." >&4
	afs=true
else
	echo "AFS does not seem to be running..." >&4
	afs=false
fi

: decide how portable to be.  Allow command line overrides.
case "$d_portable" in
"$undef") ;;
*)	d_portable="$define" ;;
esac

: set up shell script to do ~ expansion
cat >filexp <<EOSS
$startsh
: expand filename
case "\$1" in
 ~/*|~)
	echo \$1 | $sed "s|~|\${HOME-\$LOGDIR}|"
	;;
 ~*)
	if $test -f /bin/csh; then
		/bin/csh -f -c "glob \$1"
		failed=\$?
		echo ""
		exit \$failed
	else
		name=\`$expr x\$1 : '..\([^/]*\)'\`
		dir=\`$sed -n -e "/^\${name}:/{s/^[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:\([^:]*\).*"'\$'"/\1/" -e p -e q -e '}' </etc/passwd\`
		if $test ! -d "\$dir"; then
			me=\`basename \$0\`
			echo "\$me: can't locate home directory for: \$name" >&2
			exit 1
		fi
		case "\$1" in
		*/*)
			echo \$dir/\`$expr x\$1 : '..[^/]*/\(.*\)'\`
			;;
		*)
			echo \$dir
			;;
		esac
	fi
	;;
*)
	echo \$1
	;;
esac
EOSS
chmod +x filexp
$eunicefix filexp

: now set up to get a file name
cat <<'EOSC' >getfile
tilde=''
fullpath=''
already=''
skip=''
none_ok=''
exp_file=''
nopath_ok=''
orig_rp="$rp"
orig_dflt="$dflt"

case "$fn" in
*\(*)
	expr $fn : '.*(\(.*\)).*' | tr ',' '\012' >getfile.ok
	fn=`echo $fn | sed 's/(.*)//'`
	;;
esac

case "$fn" in
*:*)
	loc_file=`expr $fn : '.*:\(.*\)'`
	fn=`expr $fn : '\(.*\):.*'`
	;;
esac

case "$fn" in
*~*) tilde=true;;
esac
case "$fn" in
*/*) fullpath=true;;
esac
case "$fn" in
*+*) skip=true;;
esac
case "$fn" in
*n*) none_ok=true;;
esac
case "$fn" in
*e*) exp_file=true;;
esac
case "$fn" in
*p*) nopath_ok=true;;
esac

case "$fn" in
*f*) type='File';;
*d*) type='Directory';;
*l*) type='Locate';;
esac

what="$type"
case "$what" in
Locate) what='File';;
esac

case "$exp_file" in
'')
	case "$d_portable" in
	"$define") ;;
	*) exp_file=true;;
	esac
	;;
esac

cd ..
while test "$type"; do
	redo=''
	rp="$orig_rp"
	dflt="$orig_dflt"
	case "$tilde" in
	true) rp="$rp (~name ok)";;
	esac
	. UU/myread
	if test -f UU/getfile.ok && \
		$contains "^$ans\$" UU/getfile.ok >/dev/null 2>&1
	then
		value="$ans"
		ansexp="$ans"
		break
	fi
	case "$ans" in
	none)
		value=''
		ansexp=''
		case "$none_ok" in
		true) type='';;
		esac
		;;
	*)
		case "$tilde" in
		'') value="$ans"
			ansexp="$ans";;
		*)
			value=`UU/filexp $ans`
			case $? in
			0)
				if test "$ans" != "$value"; then
					echo "(That expands to $value on this system.)"
				fi
				;;
			*) value="$ans";;
			esac
			ansexp="$value"
			case "$exp_file" in
			'') value="$ans";;
			esac
			;;
		esac
		case "$fullpath" in
		true)
			case "$ansexp" in
			/*) value="$ansexp" ;;
			*)
				redo=true
				case "$already" in
				true)
				echo "I shall only accept a full path name, as in /bin/ls." >&4
				echo "Use a ! shell escape if you wish to check pathnames." >&4
					;;
				*)
				echo "Please give a full path name, starting with slash." >&4
					case "$tilde" in
					true)
				echo "Note that using ~name is ok provided it expands well." >&4
						already=true
						;;
					esac
				esac
				;;
			esac
			;;
		esac
		case "$redo" in
		'')
			case "$type" in
			File)
				if test -f "$ansexp"; then
					type=''
				elif test -r "$ansexp" || (test -h "$ansexp") >/dev/null 2>&1
				then
					echo "($value is not a plain file, but that's ok.)"
					type=''
				fi
				;;
			Directory)
				if test -d "$ansexp"; then
					type=''
				fi
				;;
			Locate)
				if test -d "$ansexp"; then
					echo "(Looking for $loc_file in directory $value.)"
					value="$value/$loc_file"
					ansexp="$ansexp/$loc_file"
				fi
				if test -f "$ansexp"; then
					type=''
				fi
				case "$nopath_ok" in
				true)	case "$value" in
					*/*) ;;
					*)	echo "Assuming $value will be in people's path."
						type=''
						;;
					esac
					;;
				esac
				;;
			esac

			case "$skip" in
			true) type='';
			esac

			case "$type" in
			'') ;;
			*)
				if test "$fastread" = yes; then
					dflt=y
				else
					dflt=n
				fi
				rp="$what $value doesn't exist.  Use that name anyway?"
				. UU/myread
				dflt=''
				case "$ans" in
				y*) type='';;
				*) echo " ";;
				esac
				;;
			esac
			;;
		esac
		;;
	esac
done
cd UU
ans="$value"
rp="$orig_rp"
dflt="$orig_dflt"
rm -f getfile.ok
EOSC

: determine root of directory hierarchy where package will be installed.
case "$prefix" in
'')
	dflt=`./loc . /usr/local /usr/local /local /opt /usr`
	;;
*)
	dflt="$prefix"
	;;
esac
$cat <<EOM

By default, $package will be installed in $dflt/bin, manual
pages under $dflt/man, etc..., i.e. with $dflt as prefix for
all installation directories. Typically set to /usr/local, but you
may choose /usr if you wish to install $package among your system
binaries. If you wish to have binaries under /bin but manual pages
under /usr/local/man, that's ok: you will be prompted separately
for each of the installation directories, the prefix being only used
to set the defaults.

EOM
fn=d~
rp='Installation prefix to use?'
. ./getfile
oldprefix=''
case "$prefix" in
'') ;;
*)
	case "$ans" in
	"$prefix") ;;
	*) oldprefix="$prefix";;
	esac
	;;
esac
prefix="$ans"
prefixexp="$ansexp"

: set the prefixit variable, to compute a suitable default value
prefixit='case "$3" in
""|none)
	case "$oldprefix" in
	"") eval "$1=\"\$$2\"";;
	*)
		case "$3" in
		"") eval "$1=";;
		none)
			eval "tp=\"\$$2\"";
			case "$tp" in
			""|" ") eval "$1=\"\$$2\"";;
			*) eval "$1=";;
			esac;;
		esac;;
	esac;;
*)
	eval "tp=\"$oldprefix-\$$2-\""; eval "tp=\"$tp\"";
	case "$tp" in
	--|/*--|\~*--) eval "$1=\"$prefix/$3\"";;
	/*-$oldprefix/*|\~*-$oldprefix/*)
		eval "$1=\`echo \$$2 | sed \"s,^$oldprefix,$prefix,\"\`";;
	*) eval "$1=\"\$$2\"";;
	esac;;
esac'

: determine where private library files go
: Usual default is /usr/local/lib/perl5.  Also allow things like 
: /opt/perl/lib, since /opt/perl/lib/perl5 would be redundant.
case "$prefix" in
*perl*) set dflt privlib lib ;;
*)	 set dflt privlib lib/$package ;;
esac
eval $prefixit
$cat <<EOM

There are some auxiliary files for $package that need to be put into a
private library directory that is accessible by everyone.

EOM
fn=d~+
rp='Pathname where the private library files will reside?'
. ./getfile
if $test "X$privlibexp" != "X$ansexp"; then
	installprivlib=''
fi
privlib="$ans"
privlibexp="$ansexp"
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
private files reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installprivlib" in
	'') dflt=`echo $privlibexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installprivlib";;
	esac
	fn=de~
	rp='Where will private files be installed?'
	. ./getfile
	installprivlib="$ans"
else
	installprivlib="$privlibexp"
fi

: set the base revision
baserev=5.0

: get the patchlevel
echo " "
echo "Getting the current patchlevel..." >&4
if $test -r ../patchlevel.h;then
	patchlevel=`awk '/PATCHLEVEL/ {print $3}' < ../patchlevel.h`
else
	patchlevel=0
fi
echo "(You have $package $baserev PL$patchlevel.)"

: set the prefixup variable, to restore leading tilda escape
prefixup='case "$prefixexp" in
"$prefix") ;;
*) eval "$1=\`echo \$$1 | sed \"s,^$prefixexp,$prefix,\"\`";;
esac'

: determine where public architecture dependent libraries go
set archlib archlib
eval $prefixit
case "$archlib" in
'')
	case "$privlib" in
	'')
		dflt=`./loc . "." $prefixexp/lib /usr/local/lib /usr/lib /lib`
		set dflt
		eval $prefixup
		;;
	*)	version=`echo $baserev $patchlevel | $awk '{print $1 + $2/1000.0}'`
		dflt="$privlib/$archname/$version"
		;;
	esac
	;;
*) dflt="$archlib";;
esac
cat <<EOM

$spackage contains architecture-dependent library files.  If you are
sharing libraries in a heterogeneous environment, you might store
these files in a separate location.  Otherwise, you can just include
them with the rest of the public library files.

EOM
fn=d+~
rp='Where do you want to put the public architecture-dependent libraries?'
. ./getfile
archlib="$ans"
archlibexp="$ansexp"

if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
private files reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installarchlib" in
	'') dflt=`echo $archlibexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installarchlib";;
	esac
	fn=de~
	rp='Where will architecture-dependent library files be installed?'
	. ./getfile
	installarchlib="$ans"
else
	installarchlib="$archlibexp"
fi
if $test X"$archlib" = X"$privlib"; then
	d_archlib="$undef"
else
	d_archlib="$define"
fi

: determine where site specific architecture-dependent libraries go.

set dflt sitearch lib/site_perl/$archname
eval $prefixit
$cat <<EOM

The installation process will also create a directory for
architecture-dependent site-specific extensions and modules.

EOM
fn=nd~+
rp='Pathname for the site-specific architecture-dependent library files?'
. ./getfile
if $test "X$sitearchexp" != "X$ansexp"; then
	installsitearch=''
fi
sitearch="$ans"
sitearchexp="$ansexp"
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
private files reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installsitearch" in
	'') dflt=`echo $sitearchexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installsitearch";;
	esac
	fn=de~
	rp='Where will private files be installed?'
	. ./getfile
	installsitearch="$ans"
else
	installsitearch="$sitearchexp"
fi

: set up the script used to warn in case of inconsistency
cat <<'EOSC' >whoa
dflt=y
echo " "
echo "*** WHOA THERE!!! ***" >&4
echo "    The $hint value for \$$var on this machine was \"$was\"!" >&4
rp="    Keep the $hint value?"
. ./myread
case "$ans" in
y) td=$was; tu=$was;;
esac
EOSC

: function used to set $1 to $val
setvar='var=$1; eval "was=\$$1"; td=$define; tu=$undef;
case "$val$was" in
$define$undef) . ./whoa; eval "$var=\$td";;
$undef$define) . ./whoa; eval "$var=\$tu";;
*) eval "$var=$val";;
esac'

: determine where old public architecture dependent libraries might be
case "$oldarchlib" in
'')	case "$privlib" in
	'') ;;
	*)	dflt="$privlib/$archname"
		;;
	esac
	;;
*)	dflt="$oldarchlib" 
	;;
esac
if $test ! -d "$dflt/auto"; then
	dflt=none
fi
cat <<EOM

In 5.001, Perl stored architecutre-dependent library files in a library
with a name such as $privlib/$archname, 
and this directory contained files from the standard extensions and 
files from any additional extensions you might have added.  Starting 
with version 5.002, all the architecture-dependent standard extensions 
will go into $archlib, 
while locally-added extensions will go into
$sitearch.

If you wish Perl to continue to search the old architecture-dependent
library for your local extensions, give the path to that directory.
If you do not wish to use your old architecture-dependent library
files, answer 'none'.

EOM
fn=dn~
rp='Directory for your old 5.001 architecture-dependent libraries?'
. ./getfile
oldarchlib="$ans"
oldarchlibexp="$ansexp"
case "$oldarchlib" in
''|' ') val="$undef" ;;
*) val="$define" ;;
esac
set d_oldarchlib
eval $setvar

: determine where public executables go
echo " "
set dflt bin bin
eval $prefixit
fn=d~
rp='Pathname where the public executables will reside?'
. ./getfile
if $test "X$ansexp" != "X$binexp"; then
	installbin=''
fi
bin="$ans"
binexp="$ansexp"
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
executables reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installbin" in
	'') dflt=`echo $binexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installbin";;
	esac
	fn=de~
	rp='Where will public executables be installed?'
	. ./getfile
	installbin="$ans"
else
	installbin="$binexp"
fi

: determine where manual pages go
set man1dir man1dir none
eval $prefixit
$cat <<EOM

$spackage has manual pages available in source form.
EOM
case "$nroff" in
nroff)
	echo "However, you don't have nroff, so they're probably useless to you."
	case "$man1dir" in
	'') man1dir="none";;
	esac;;
esac
echo "If you don't want the manual sources installed, answer 'none'."
case "$man1dir" in
'')
	lookpath="$prefixexp/man/man1 $prefixexp/man/l_man/man1"
	lookpath="$lookpath $prefixexp/man/p_man/man1"
	lookpath="$lookpath $prefixexp/man/u_man/man1"
	: If prefix contains 'perl' then we want to keep the man pages
	: under the prefix directory.  Otherwise, look in a variety of
	: other possible places.  This is debatable, but probably a
	: good compromise.
	case "$prefix" in
	*perl*) ;;
	*)	lookpath="$lookpath /usr/local/man/man1"
		lookpath="$lookpath /opt/local/man/man1"
		lookpath="$lookpath /usr/local/man/man.1"
		lookpath="$lookpath /opt/local/man/man.1"
		lookpath="$lookpath /usr/man/local/man1"
		lookpath="$lookpath /usr/man/l_man/man1"
		lookpath="$lookpath /usr/man/p_man/man1"
		lookpath="$lookpath /usr/man/u_man/man1"
		lookpath="$lookpath /usr/man/man.L"
		lookpath="$lookpath /usr/man/man.l"
		;;
	esac
	dflt=`./loc . $prefixexp/man/man1 $lookpath`
	set dflt
	eval $prefixup
	;;
' ') dflt=none;;
*)  dflt="$man1dir"
	;;
esac
echo " "
fn=dn+~
rp="Where do the main $spackage manual pages (source) go?"
. ./getfile
if $test "X$man1direxp" != "X$ansexp"; then
	installman1dir=''
fi
man1dir="$ans"
man1direxp="$ansexp"
case "$man1dir" in
'') man1dir=' '
	installman1dir='';;
esac
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
manual pages reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installman1dir" in
	'') dflt=`echo $man1direxp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installman1dir";;
	esac
	fn=de~
	rp='Where will man pages be installed?'
	. ./getfile
	installman1dir="$ans"
else
	installman1dir="$man1direxp"
fi

: What suffix to use on installed man pages

case "$man1dir" in
' ')
	man1ext='0'
	;;
*)
	rp="What suffix should be used for the main $spackage man pages?"
	case "$man1dir" in
	*1)  dflt=1 ;;
	*1p) dflt=1p ;;
	*1pm) dflt=1pm ;;
	*l) dflt=l;;
	*n) dflt=n;;
	*o) dflt=o;;
	*p) dflt=p;;
	*C) dflt=C;;
	*L) dflt=L;;
	*L1) dflt=L1;;
	*) dflt=1;;
	esac
	. ./myread
	man1ext="$ans"
	;;
esac

: see if we can have long filenames
echo " "
rmlist="$rmlist /tmp/cf$$"
$test -d /tmp/cf$$ || mkdir /tmp/cf$$
first=123456789abcdef
second=/tmp/cf$$/$first
$rm -f $first $second
if (echo hi >$first) 2>/dev/null; then
	if $test -f 123456789abcde; then
		echo 'You cannot have filenames longer than 14 characters.  Sigh.' >&4
		val="$undef"
	else
		if (echo hi >$second) 2>/dev/null; then
			if $test -f /tmp/cf$$/123456789abcde; then
				$cat <<'EOM'
That's peculiar... You can have filenames longer than 14 characters, but only
on some of the filesystems.  Maybe you are using NFS.  Anyway, to avoid problems
I shall consider your system cannot support long filenames at all.
EOM
				val="$undef"
			else
				echo 'You can have filenames longer than 14 characters.' >&4
				val="$define"
			fi
		else
			$cat <<'EOM'
How confusing! Some of your filesystems are sane enough to allow filenames
longer than 14 characters but some others like /tmp can't even think about them.
So, for now on, I shall assume your kernel does not allow them at all.
EOM
			val="$undef"
		fi
	fi
else
	$cat <<'EOM'
You can't have filenames longer than 14 chars.  You can't even think about them!
EOM
	val="$undef"
fi 
set d_flexfnam
eval $setvar
$rm -rf /tmp/cf$$ 123456789abcde*

: determine where library module manual pages go
set man3dir man3dir none
eval $prefixit
$cat <<EOM

$spackage has manual pages for many of the library modules.
EOM

case "$nroff" in
nroff)
	$cat <<'EOM'
However, you don't have nroff, so they're probably useless to you.
You can use the supplied perldoc script instead.
EOM
	case "$man3dir" in
	'') man3dir="none";;
	esac;;
esac

case "$d_flexfnam" in
undef)
	$cat <<'EOM'
However, your system can't handle the long file names like File::Basename.3. 
You can use the supplied perldoc script instead.
EOM
	case "$man3dir" in
	'') man3dir="none";;
	esac;;
esac

echo "If you don't want the manual sources installed, answer 'none'."
: We dont use /usr/local/man/man3 because some man programs will
: only show the /usr/local/man/man3 contents, and not the system ones,
: thus man less will show the perl module less.pm, but not the system
: less command.  We might also conflict with TCL man pages.
: However, something like /opt/perl/man/man3 is fine.
case "$man3dir" in
'')	case "$prefix" in 
	*perl*) dflt=`echo $man1dir | $sed 's/man1/man3/g'` ;;
	*)	dflt="$privlib/man/man3" ;;
	esac
	;;
' ') dflt=none;;
*)	dflt="$man3dir" ;;
esac
echo " "

fn=dn+~
rp="Where do the $spackage library man pages (source) go?"
. ./getfile
if test "X$man3direxp" != "X$ansexp"; then
	installman3dir=''
fi

man3dir="$ans"
man3direxp="$ansexp"
case "$man3dir" in
'') man3dir=' '
	installman3dir='';;
esac
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
manual pages reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installman3dir" in
	'') dflt=`echo $man3direxp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installman3dir";;
	esac
	fn=de~
	rp='Where will man pages be installed?'
	. ./getfile
	installman3dir="$ans"
else
	installman3dir="$man3direxp"
fi

: What suffix to use on installed man pages

case "$man3dir" in
' ')
	man3ext='0'
	;;
*)
	rp="What suffix should be used for the $spackage library man pages?"
	case "$man3dir" in
	*3)  dflt=3 ;;
	*3p) dflt=3p ;;
	*3pm) dflt=3pm ;;
	*l) dflt=l;;
	*n) dflt=n;;
	*o) dflt=o;;
	*p) dflt=p;;
	*C) dflt=C;;
	*L) dflt=L;;
	*L3) dflt=L3;;
	*) dflt=3;;
	esac
	. ./myread
	man3ext="$ans"
	;;
esac

: determine where public executable scripts go
set scriptdir scriptdir
eval $prefixit
case "$scriptdir" in
'')
	dflt="$bin"
	: guess some guesses
	$test -d /usr/share/scripts && dflt=/usr/share/scripts
	$test -d /usr/share/bin && dflt=/usr/share/bin
	$test -d /usr/local/script && dflt=/usr/local/script
	$test -d $prefixexp/script && dflt=$prefixexp/script
	set dflt
	eval $prefixup
	;;
*)  dflt="$scriptdir"
	;;
esac
$cat <<EOM
 
Some installations have a separate directory just for executable scripts so
that they can mount it across multiple architectures but keep the scripts in
one spot.  You might, for example, have a subdirectory of /usr/share for this.
Or you might just lump your scripts in with all your other executables.
 
EOM
fn=d~
rp='Where do you keep publicly executable scripts?'
. ./getfile
if $test "X$ansexp" != "X$scriptdirexp"; then
	installscript=''
fi
scriptdir="$ans"
scriptdirexp="$ansexp"
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
scripts reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installscript" in
	'') dflt=`echo $scriptdirexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installscript";;
	esac
	fn=de~
	rp='Where will public scripts be installed?'
	. ./getfile
	installscript="$ans"
else
	installscript="$scriptdirexp"
fi

: determine where site specific libraries go.
set dflt sitelib lib/site_perl
eval $prefixit
$cat <<EOM

The installation process will also create a directory for
site-specific extensions and modules.  Some users find it convenient
to place all local files in this directory rather than in the main
distribution directory.

EOM
fn=d~+
rp='Pathname for the site-specific library files?'
. ./getfile
if $test "X$sitelibexp" != "X$ansexp"; then
	installsitelib=''
fi
sitelib="$ans"
sitelibexp="$ansexp"
if $afs; then
	$cat <<EOM

Since you are running AFS, I need to distinguish the directory in which
private files reside from the directory in which they are installed (and from
which they are presumably copied to the former directory by occult means).

EOM
	case "$installsitelib" in
	'') dflt=`echo $sitelibexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installsitelib";;
	esac
	fn=de~
	rp='Where will private files be installed?'
	. ./getfile
	installsitelib="$ans"
else
	installsitelib="$sitelibexp"
fi

: determine perl absolute location
case "$perlpath" in
'')	perlpath=$binexp/perl ;;
esac

: figure out how to guarantee perl startup
case "$startperl" in
'')
	case "$sharpbang" in
	*!)
		$cat <<EOH

I can use the #! construct to start perl on your system. This will
make startup of perl scripts faster, but may cause problems if you
want to share those scripts and perl is not in a standard place
($perlpath) on all your platforms. The alternative is to force
a shell by starting the script with a single ':' character.

EOH
		dflt=y
		rp='Shall I use #! to start up perl?'
		. ./myread
		case "$ans" in
		y*|Y*) startperl="#!$perlpath";;
		*) startperl=": # use perl";;
		esac
		;;
	*) startperl=": # use perl"
		;;
	esac
	;;
esac
echo "I'll use $startperl to start perl scripts."

: determine where manual pages are on this system
echo " "
case "$sysman" in
'') 
	syspath='/usr/man/man1 /usr/man/mann /usr/man/manl /usr/man/local/man1'
	syspath="$syspath /usr/man/u_man/man1 /usr/share/man/man1"
	syspath="$syspath /usr/catman/u_man/man1 /usr/man/l_man/man1"
	syspath="$syspath /usr/local/man/u_man/man1 /usr/local/man/l_man/man1"
	syspath="$syspath /usr/man/man.L /local/man/man1 /usr/local/man/man1"
	sysman=`./loc . /usr/man/man1 $syspath`
	;;
esac
if $test -d "$sysman"; then
	echo "System manual is in $sysman." >&4
else
	echo "Could not find manual pages in source form." >&4
fi

: see what memory models we can support
case "$models" in
'')
	$cat >pdp11.c <<'EOP'
main() {
#ifdef pdp11
	exit(0);
#else
	exit(1);
#endif
}
EOP
	cc -o pdp11 pdp11.c >/dev/null 2>&1
	if ./pdp11 2>/dev/null; then
		dflt='unsplit split'
	else
		tans=`./loc . X /lib/small /lib/large /usr/lib/small /usr/lib/large /lib/medium /usr/lib/medium /lib/huge`
		case "$tans" in
		X) dflt='none';;
		*) if $test -d /lib/small || $test -d /usr/lib/small; then
				dflt='small'
			else
				dflt=''
			fi
			if $test -d /lib/medium || $test -d /usr/lib/medium; then
				dflt="$dflt medium"
			fi
			if $test -d /lib/large || $test -d /usr/lib/large; then
				dflt="$dflt large"
			fi
			if $test -d /lib/huge || $test -d /usr/lib/huge; then
				dflt="$dflt huge"
			fi
		esac
	fi;;
*) dflt="$models";;
esac
$cat <<EOM
 
Some systems have different model sizes.  On most systems they are called
small, medium, large, and huge.  On the PDP11 they are called unsplit and
split.  If your system doesn't support different memory models, say "none".
If you wish to force everything to one memory model, say "none" here and
put the appropriate flags later when it asks you for other cc and ld flags.
Venix systems may wish to put "none" and let the compiler figure things out.
(In the following question multiple model names should be space separated.)

EOM
rp="Which memory models are supported?"
. ./myread
models="$ans"

case "$models" in
none)
	small=''
	medium=''
	large=''
	huge=''
	unsplit=''
	split=''
	;;
*split)
	case "$split" in
	'') if $contains '\-i' $sysman/ld.1 >/dev/null 2>&1 || \
			 $contains '\-i' $sysman/cc.1 >/dev/null 2>&1; then
			dflt='-i'
		else
			dflt='none'
		fi;;
	*) dflt="$split";;
	esac
	rp="What flag indicates separate I and D space?"
	. ./myread
	tans="$ans"
	case "$tans" in
	none) tans='';;
	esac
	split="$tans"
	unsplit='';;
*large*|*small*|*medium*|*huge*)
	case "$models" in
	*large*)
		case "$large" in
		'') dflt='-Ml';;
		*) dflt="$large";;
		esac
	rp="What flag indicates large model?"
	. ./myread
	tans="$ans"
	case "$tans" in
	none) tans='';
	esac
	large="$tans";;
	*) large='';;
	esac
	case "$models" in
	*huge*) case "$huge" in
		'') dflt='-Mh';;
		*) dflt="$huge";;
		esac
		rp="What flag indicates huge model?"
		. ./myread
		tans="$ans"
		case "$tans" in
		none) tans='';
		esac
		huge="$tans";;
	*) huge="$large";;
	esac
	case "$models" in
	*medium*) case "$medium" in
		'') dflt='-Mm';;
		*) dflt="$medium";;
		esac
		rp="What flag indicates medium model?"
		. ./myread
		tans="$ans"
		case "$tans" in
		none) tans='';
		esac
		medium="$tans";;
	*) medium="$large";;
	esac
	case "$models" in
	*small*) case "$small" in
		'') dflt='none';;
		*) dflt="$small";;
		esac
		rp="What flag indicates small model?"
		. ./myread
		tans="$ans"
		case "$tans" in
		none) tans='';
		esac
		small="$tans";;
	*) small='';;
	esac
	;;
*)
	echo "Unrecognized memory models--you may have to edit Makefile.SH" >&4
	;;
esac

: make some quick guesses about what we are up against
echo " "
$echo $n "Hmm...  $c"
echo exit 1 >bsd
echo exit 1 >usg
echo exit 1 >v7
echo exit 1 >osf1
echo exit 1 >eunice
echo exit 1 >xenix
echo exit 1 >venix
d_bsd="$undef"
$cat /usr/include/signal.h /usr/include/sys/signal.h >foo 2>/dev/null
if test -f /osf_boot || $contains 'OSF/1' /usr/include/ctype.h >/dev/null 2>&1
then
	echo "Looks kind of like an OSF/1 system, but we'll see..."
	echo exit 0 >osf1
elif test `echo abc | tr a-z A-Z` = Abc ; then
	xxx=`./loc addbib blurfl $pth`
	if $test -f $xxx; then
	echo "Looks kind of like a USG system with BSD features, but we'll see..."
		echo exit 0 >bsd
		echo exit 0 >usg
	else
		if $contains SIGTSTP foo >/dev/null 2>&1 ; then
			echo "Looks kind of like an extended USG system, but we'll see..."
		else
			echo "Looks kind of like a USG system, but we'll see..."
		fi
		echo exit 0 >usg
	fi
elif $contains SIGTSTP foo >/dev/null 2>&1 ; then
	echo "Looks kind of like a BSD system, but we'll see..."
	d_bsd="$define"
	echo exit 0 >bsd
else
	echo "Looks kind of like a Version 7 system, but we'll see..."
	echo exit 0 >v7
fi
case "$eunicefix" in
*unixtovms*)
	$cat <<'EOI'
There is, however, a strange, musty smell in the air that reminds me of
something...hmm...yes...I've got it...there's a VMS nearby, or I'm a Blit.
EOI
	echo exit 0 >eunice
	d_eunice="$define"
: it so happens the Eunice I know will not run shell scripts in Unix format
	;;
*)
	echo " "
	echo "Congratulations.  You aren't running Eunice."
	d_eunice="$undef"
	;;
esac
if test -f /xenix; then
	echo "Actually, this looks more like a XENIX system..."
	echo exit 0 >xenix
	d_xenix="$define"
else
	echo " "
	echo "It's not Xenix..."
	d_xenix="$undef"
fi
chmod +x xenix
$eunicefix xenix
if test -f /venix; then
	echo "Actually, this looks more like a VENIX system..."
	echo exit 0 >venix
else
	echo " "
	if ./xenix; then
		: null
	else
		echo "Nor is it Venix..."
	fi
fi
chmod +x bsd usg v7 osf1 eunice xenix venix
$eunicefix bsd usg v7 osf1 eunice xenix venix
$rm -f foo

: see if we need a special compiler
echo " "
if ./usg; then
	case "$cc" in
	'') case "$Mcc" in
		/*) dflt='Mcc';;
		*) case "$large" in
			-M*) dflt='cc';;
			*)	if $contains '\-M' $sysman/cc.1 >/dev/null 2>&1 ; then
					if $contains '\-M' $sysman/cpp.1 >/dev/null 2>&1; then
						dflt='cc'
					else
						dflt='cc -M'
					fi
				else
					dflt='cc'
				fi;;
			esac;;
		esac;;
	*)  dflt="$cc";;
	esac
	$cat <<'EOM'
On some systems the default C compiler will not resolve multiple global
references that happen to have the same name.  On some such systems the "Mcc"
command may be used to force these to be resolved.  On other systems a "cc -M"
command is required.  (Note that the -M flag on other systems indicates a
memory model to use!) If you have the Gnu C compiler, you might wish to use
that instead.

EOM
	rp="What command will force resolution on this system?"
	. ./myread
	cc="$ans"
else
	case "$cc" in
	'') dflt=cc;;
	*) dflt="$cc";;
	esac
	rp="Use which C compiler?"
	. ./myread
	cc="$ans"
fi
echo " "
echo "Checking for GNU cc in disguise and/or its version number..." >&4
$cat >gccvers.c <<EOM
#include <stdio.h>
int main() {
#ifdef __GNUC__
#ifdef __VERSION__
	printf("%s\n", __VERSION__);
#else
	printf("%s\n", "1");
#endif
#endif
	exit(0);
}
EOM
if $cc -o gccvers gccvers.c >/dev/null 2>&1; then
	gccversion=`./gccvers`
	case "$gccversion" in
	'') echo "You are not using GNU cc." ;;
	*)  echo "You are using GNU cc $gccversion." ;;
	esac
else
	echo " "
	echo "*** WHOA THERE!!! ***" >&4
	echo "    Your C compiler \"$cc\" doesn't seem to be working!" >&4
	case "$knowitall" in
	'')
	echo "    You'd better start hunting for one and let me know about it." >&4
		exit 1
		;;
	esac
fi
$rm -f gccvers*
case "$gccversion" in
1*) cpp=`./loc gcc-cpp $cpp $pth` ;;
esac

: What should the include directory be ?
echo " "
$echo $n "Hmm...  $c"
dflt='/usr/include'
incpath=''
mips_type=''
if $test -f /bin/mips && /bin/mips; then
	echo "Looks like a MIPS system..."
	$cat >usr.c <<'EOCP'
#ifdef SYSTYPE_BSD43
/bsd43
#endif
EOCP
	if $cc -E usr.c > usr.out && $contains / usr.out >/dev/null 2>&1; then
		dflt='/bsd43/usr/include'
		incpath='/bsd43'
		mips_type='BSD 4.3'
	else
		mips_type='System V'
	fi
	$rm -f usr.c usr.out
	echo "and you're compiling with the $mips_type compiler and libraries."
	xxx_prompt=y
	echo "exit 0" >mips
else
	echo "Doesn't look like a MIPS system."
	xxx_prompt=n
	echo "exit 1" >mips
fi
chmod +x mips
$eunicefix mips
echo " "
case "$usrinc" in
'') ;;
*) dflt="$usrinc";;
esac
case "$xxx_prompt" in
y)	fn=d/
	rp='Where are the include files you want to use?'
	. ./getfile
	usrinc="$ans"
	;;
*)	usrinc="$dflt"
	;;
esac

: see how we invoke the C preprocessor
echo " "
echo "Now, how can we feed standard input to your C preprocessor..." >&4
cat <<'EOT' >testcpp.c
#define ABC abc
#define XYZ xyz
ABC.XYZ
EOT
cd ..
echo 'cat >.$$.c; '"$cc"' -E ${1+"$@"} .$$.c; rm .$$.c' >cppstdin
chmod 755 cppstdin
wrapper=`pwd`/cppstdin
ok='false'
cd UU

if $test "X$cppstdin" != "X" && \
	$cppstdin $cppminus <testcpp.c >testcpp.out 2>&1 && \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1
then
	echo "You used to use $cppstdin $cppminus so we'll use that again."
	case "$cpprun" in
	'') echo "But let's see if we can live without a wrapper..." ;;
	*)
		if $cpprun $cpplast <testcpp.c >testcpp.out 2>&1 && \
			$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1
		then
			echo "(And we'll use $cpprun $cpplast to preprocess directly.)"
			ok='true'
		else
			echo "(However, $cpprun $cpplast does not work, let's see...)"
		fi
		;;
	esac
else
	case "$cppstdin" in
	'') ;;
	*)
		echo "Good old $cppstdin $cppminus does not seem to be of any help..."
		;;
	esac
fi

if $ok; then
	: nothing
elif echo 'Maybe "'"$cc"' -E" will work...'; \
	$cc -E <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	echo "Yup, it does."
	x_cpp="$cc -E"
	x_minus='';
elif echo 'Nope...maybe "'"$cc"' -E -" will work...'; \
	$cc -E - <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	echo "Yup, it does."
	x_cpp="$cc -E"
	x_minus='-';
elif echo 'Nope...maybe "'"$cc"' -P" will work...'; \
	$cc -P <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	echo "Yipee, that works!"
	x_cpp="$cc -P"
	x_minus='';
elif echo 'Nope...maybe "'"$cc"' -P -" will work...'; \
	$cc -P - <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	echo "At long last!"
	x_cpp="$cc -P"
	x_minus='-';
elif echo 'No such luck, maybe "'$cpp'" will work...'; \
	$cpp <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	echo "It works!"
	x_cpp="$cpp"
	x_minus='';
elif echo 'Nixed again...maybe "'$cpp' -" will work...'; \
	$cpp - <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	echo "Hooray, it works!  I was beginning to wonder."
	x_cpp="$cpp"
	x_minus='-';
elif echo 'Uh-uh.  Time to get fancy.  Trying a wrapper...'; \
	$wrapper <testcpp.c >testcpp.out 2>&1; \
	$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
	x_cpp="$wrapper"
	x_minus=''
	echo "Eureka!"
else
	dflt=''
	rp="No dice.  I can't find a C preprocessor.  Name one:"
	. ./myread
	x_cpp="$ans"
	x_minus=''
	$x_cpp <testcpp.c >testcpp.out 2>&1
	if $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 ; then
		echo "OK, that will do." >&4
	else
echo "Sorry, I can't get that to work.  Go find one and rerun Configure." >&4
		exit 1
	fi
fi

case "$ok" in
false)
	cppstdin="$x_cpp"
	cppminus="$x_minus"
	cpprun="$x_cpp"
	cpplast="$x_minus"
	set X $x_cpp
	shift
	case "$1" in
	"$cpp")
		echo "Perhaps can we force $cc -E using a wrapper..."
		if $wrapper <testcpp.c >testcpp.out 2>&1; \
			$contains 'abc.*xyz' testcpp.out >/dev/null 2>&1
		then
			echo "Yup, we can."
			cppstdin="$wrapper"
			cppminus='';
		else
			echo "Nope, we'll have to live without it..."
		fi
		;;
	esac
	case "$cpprun" in
	"$wrapper")
		cpprun=''
		cpplast=''
		;;
	esac
	;;
esac

case "$cppstdin" in
"$wrapper") ;;
*) $rm -f $wrapper;;
esac
$rm -f testcpp.c testcpp.out

: Set private lib path
case "$plibpth" in
'') if ./mips; then
		plibpth="$incpath/usr/lib /usr/local/lib /usr/ccs/lib"
	fi;;
esac
case "$libpth" in
' ') dlist='';;
'') dlist="$loclibpth $plibpth $glibpth";;
*) dlist="$libpth";;
esac

: Now check and see which directories actually exist, avoiding duplicates
libpth=''
for xxx in $dlist
do
    if $test -d $xxx; then
		case " $libpth " in
		*" $xxx "*) ;;
		*) libpth="$libpth $xxx";;
		esac
    fi
done
$cat <<'EOM'

Some systems have incompatible or broken versions of libraries.  Among
the directories listed in the question below, please remove any you
know not to be holding relevant libraries, and add any that are needed.
Say "none" for none.

EOM
case "$libpth" in
'') dflt='none';;
*)
	set X $libpth
	shift
	dflt=${1+"$@"}
	;;
esac
rp="Directories to use for library searches?"
. ./myread
case "$ans" in
none) libpth=' ';;
*) libpth="$ans";;
esac

: determine optimize, if desired, or use for debug flag also
case "$optimize" in
' ') dflt='none';;
'') dflt='-O';;
*) dflt="$optimize";;
esac
$cat <<EOH

Some C compilers have problems with their optimizers, by default, $package
compiles with the -O flag to use the optimizer.  Alternately, you might want
to use the symbolic debugger, which uses the -g flag (on traditional Unix
systems).  Either flag can be specified here.  To use neither flag, specify
the word "none".

EOH
rp="What optimizer/debugger flag should be used?"
. ./myread
optimize="$ans"
case "$optimize" in
'none') optimize=" ";;
esac

dflt=''
: We will not override a previous value, but we might want to
: augment a hint file
case "$hint" in
none|recommended)
	case "$gccversion" in
	1*) dflt='-fpcc-struct-return' ;;
	esac
	case "$optimize" in
	*-g*) dflt="$dflt -DDEBUGGING";;
	esac
	case "$gccversion" in
	2*) if test -d /etc/conf/kconfig.d &&
			$contains _POSIX_VERSION $usrinc/sys/unistd.h >/dev/null 2>&1
		then
			dflt="$dflt -posix"
		fi
		;;
	esac
	;;
esac

case "$mips_type" in
*BSD*|'') inclwanted="$locincpth $usrinc";;
*) inclwanted="$locincpth $inclwanted $usrinc/bsd";;
esac
for thisincl in $inclwanted; do
	if $test -d $thisincl; then
		if $test x$thisincl != x$usrinc; then
			case "$dflt" in
			*$thisincl*);;
			*) dflt="$dflt -I$thisincl";;
			esac
		fi
	fi
done

inctest='if $contains $2 $usrinc/$1 >/dev/null 2>&1; then
	xxx=true;
elif $contains $2 $usrinc/sys/$1 >/dev/null 2>&1; then
	xxx=true;
else
	xxx=false;
fi;
if $xxx; then
	case "$dflt" in
	*$2*);;
	*) dflt="$dflt -D$2";;
	esac;
fi'

if ./osf1; then
	set signal.h __LANGUAGE_C__; eval $inctest
else
	set signal.h LANGUAGE_C; eval $inctest
fi
set signal.h NO_PROTOTYPE; eval $inctest
set signal.h _NO_PROTO; eval $inctest

case "$hint" in
none|recommended) dflt="$ccflags $dflt" ;;
*) dflt="$ccflags";;
esac

case "$dflt" in
''|' ') dflt=none;;
esac
$cat <<EOH

Your C compiler may want other flags.  For this question you should include
-I/whatever and -DWHATEVER flags and any other flags used by the C compiler,
but you should NOT include libraries or ld flags like -lwhatever.  If you
want $package to honor its debug switch, you should include -DDEBUGGING here.
Your C compiler might also need additional flags, such as -D_POSIX_SOURCE,
-DHIDEMYMALLOC or -DCRIPPLED_CC.

To use no flags, specify the word "none".

EOH
set X $dflt
shift
dflt=${1+"$@"}
rp="Any additional cc flags?"
. ./myread
case "$ans" in
none) ccflags='';;
*) ccflags="$ans";;
esac

: the following weeds options from ccflags that are of no interest to cpp
cppflags="$ccflags"
case "$gccversion" in
1*) cppflags="$cppflags -D__GNUC__"
esac
case "$mips_type" in
'');;
*BSD*) cppflags="$cppflags -DSYSTYPE_BSD43";;
esac
case "$cppflags" in
'');;
*)
	echo " "
	echo "Let me guess what the preprocessor flags are..." >&4
	set X $cppflags
	shift
	cppflags=''
	$cat >cpp.c <<'EOM'
#define BLURFL foo

BLURFL xx LFRULB
EOM
	previous=''
	for flag in $*
	do
		case "$flag" in
		-*) ftry="$flag";;
		*) ftry="$previous $flag";;
		esac
		if $cppstdin -DLFRULB=bar $ftry $cppminus <cpp.c \
			>cpp1.out 2>/dev/null && \
			$cpprun -DLFRULB=bar $ftry $cpplast <cpp.c \
			>cpp2.out 2>/dev/null && \
			$contains 'foo.*xx.*bar' cpp1.out >/dev/null 2>&1 && \
			$contains 'foo.*xx.*bar' cpp2.out >/dev/null 2>&1
		then
			cppflags="$cppflags $ftry"
			previous=''
		else
			previous="$flag"
		fi
	done
	set X $cppflags
	shift
	cppflags=${1+"$@"}
	case "$cppflags" in
	*-*)  echo "They appear to be: $cppflags";;
	esac
	$rm -f cpp.c cpp?.out
	;;
esac

: flags used in final linking phase

case "$ldflags" in
'') if ./venix; then
		dflt='-i -z'
	else
		dflt=''
	fi
	case "$ccflags" in
	*-posix*) dflt="$dflt -posix" ;;
	esac
	;;
*) dflt="$ldflags";;
esac

: Try to guess additional flags to pick up local libraries.
for thislibdir in $libpth; do
	case " $loclibpth " in
	*" $thislibdir "*)
		case "$dflt " in 
		*"-L$thislibdir "*) ;;
		*)  dflt="$dflt -L$thislibdir" ;;
		esac
		;;
	esac
done

case "$dflt" in
'') dflt='none' ;;
esac

$cat <<EOH

Your C linker may need flags.  For this question you should
include -L/whatever and any other flags used by the C linker, but you
should NOT include libraries like -lwhatever.

Make sure you include the appropriate -L/path flags if your C linker
does not normally search all of the directories you specified above,
namely
	$libpth
To use no flags, specify the word "none".

EOH

rp="Any additional ld flags (NOT including libraries)?"
. ./myread
case "$ans" in
none) ldflags='';;
*) ldflags="$ans";;
esac
rmlist="$rmlist pdp11"

: coherency check
echo " "
echo "Checking your choice of C compiler and flags for coherency..." >&4
set X $cc $optimize $ccflags $ldflags try.c -o try
shift
$cat >try.msg <<EOM
I've tried to compile and run a simple program with:

	$*
	./try

and I got the following output:

EOM
$cat > try.c <<'EOF'
#include <stdio.h>
main() { exit(0); }
EOF
dflt=y
if sh -c "$cc $optimize $ccflags try.c -o try $ldflags" >>try.msg 2>&1; then
	if sh -c './try' >>try.msg 2>&1; then
		dflt=n
	else
		echo "The program compiled OK, but exited with status $?." >>try.msg
		rp="You have a problem.  Shall I abort Configure"
		dflt=y
	fi
else
	echo "I can't compile the test program." >>try.msg
	rp="You have a BIG problem.  Shall I abort Configure"
	dflt=y
fi
case "$dflt" in
y)
	$cat try.msg
	case "$knowitall" in
	'')
		echo "(The supplied flags might be incorrect with this C compiler.)"
		;;
	*) dflt=n;;
	esac
	echo " "
	. ./myread
	case "$ans" in
	n*|N*) ;;
	*)	echo "Ok.  Stopping Configure." >&4
		exit 1
		;;
	esac
	;;
n) echo "OK, that should do.";;
esac
$rm -f try try.* core

: compute shared library extension
case "$so" in
'')
	if xxx=`./loc libc.sl X $libpth`; $test -f "$xxx"; then
		dflt='sl'
	else
		dflt='so'
	fi
	;;
*) dflt="$so";;
esac
$cat <<EOM

On some systems, shared libraries may be available.  Answer 'none' if
you want to suppress searching of shared libraries for the remaining
of this configuration.

EOM
rp='What is the file extension used for shared libraries?'
. ./myread
so="$ans"

: Looking for optional libraries
echo " "
echo "Checking for optional libraries..." >&4
case "$libs" in
' '|'') dflt='';;
*) dflt="$libs";;
esac
case "$libswanted" in
'') libswanted='c_s';;
esac
for thislib in $libswanted; do
	
	if xxx=`./loc lib$thislib.$so.[0-9]'*' X $libpth`; $test -f "$xxx"; then
		echo "Found -l$thislib (shared)."
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l$thislib";;
		esac
	elif xxx=`./loc lib$thislib.$so X $libpth` ; $test -f "$xxx"; then
		echo "Found -l$thislib (shared)."
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l$thislib";;
		esac
	elif xxx=`./loc lib$thislib.a X $libpth`; $test -f "$xxx"; then
		echo "Found -l$thislib."
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l$thislib";;
		esac
	elif xxx=`./loc $thislib.a X $libpth`; $test -f "$xxx"; then
		echo "Found -l$thislib."
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l$thislib";;
		esac
	elif xxx=`./loc lib${thislib}_s.a X $libpth`; $test -f "$xxx"; then
		echo "Found -l${thislib}_s."
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l${thislib}_s";;
		esac
	elif xxx=`./loc Slib$thislib.a X $xlibpth`; $test -f "$xxx"; then
		echo "Found -l$thislib."
		case " $dflt " in
		*"-l$thislib "*);;
		*) dflt="$dflt -l$thislib";;
		esac
	else
		echo "No -l$thislib."
	fi
done
set X $dflt
shift
dflt="$*"
case "$libs" in
'') dflt="$dflt";;
*) dflt="$libs";;
esac
case "$dflt" in
' '|'') dflt='none';;
esac

$cat <<EOM
 
Some versions of Unix support shared libraries, which make executables smaller
but make load time slightly longer.

On some systems, mostly newer Unix System V's, the shared library is included
by putting the option "-lc_s" as the last thing on the cc command line when
linking.  Other systems use shared libraries by default.  There may be other
libraries needed to compile $package on your machine as well.  If your system
needs the "-lc_s" option, include it here.  Include any other special libraries
here as well.  Say "none" for none.
EOM

echo " "
rp="Any additional libraries?"
. ./myread
case "$ans" in
none) libs=' ';;
*) libs="$ans";;
esac

: see if nm is to be used to determine whether a symbol is defined or not
case "$usenm" in
'')
	dflt=`egrep 'inlibc|csym' ../Configure | wc -l 2>/dev/null`
	if $test $dflt -gt 20; then
		dflt=y
	else
		dflt=n
	fi
	;;
*)
	case "$usenm" in
	true) dflt=y;;
	*) dflt=n;;
	esac
	;;
esac
$cat <<EOM

I can use 'nm' to extract the symbols from your C libraries. This is a time
consuming task which may generate huge output on the disk (up to 3 megabytes)
but that should make the symbols extraction faster. The alternative is to skip
the 'nm' extraction part and to compile a small test program instead to
determine whether each symbol is present. If you have a fast C compiler and/or
if your 'nm' output cannot be parsed, this may be the best solution.

EOM
rp='Shall I use nm to extract C symbols from the libraries?'
. ./myread
case "$ans" in
n|N) usenm=false;;
*) usenm=true;;
esac

runnm=$usenm
case "$reuseval" in
true) runnm=false;;
esac

: nm options which may be necessary
case "$nm_opt" in
'') if $test -f /mach_boot; then
		nm_opt=''
	elif $test -d /usr/ccs/lib; then
		nm_opt='-p'
	elif $test -f /dgux; then
		nm_opt='-p'
	else
		nm_opt=''
	fi;;
esac

case "$runnm" in
true)
: get list of predefined functions in a handy place
echo " "
case "$libc" in
'') libc=unknown
	case "$libs" in
	*-lc_s*) libc=`./loc libc_s.a $libc $libpth`
	esac
	;;
esac
libnames='';
case "$libs" in
'') ;;
*)  for thislib in $libs; do
	case "$thislib" in
	-lc|-lc_s)
		: Handle C library specially below.
		;;
	-l*)
		thislib=`echo $thislib | $sed -e 's/^-l//'`
		if try=`./loc lib$thislib.$so.'*' X $libpth`; $test -f "$try"; then
			:
		elif try=`./loc lib$thislib.$so X $libpth`; $test -f "$try"; then
			:
		elif try=`./loc lib$thislib.a X $libpth`; $test -f "$try"; then
			:
		elif try=`./loc lib$thislib X $libpth`; $test -f "$try"; then
			:
		elif try=`./loc $thislib X $libpth`; $test -f "$try"; then
			:
		elif try=`./loc Slib$thislib.a X $xlibpth`; $test -f "$try"; then
			:
		else
			try=''
		fi
		libnames="$libnames $try"
		;;
	*) libnames="$libnames $thislib" ;;
	esac
	done
	;;
esac
xxx=normal
case "$libc" in
unknown)
	set /usr/ccs/lib/libc.$so
	$test -r $1 || set /usr/lib/libc.$so
	$test -r $1 || set /usr/shlib/libc.$so
	$test -r $1 || \
		set `echo blurfl; echo /usr/lib/libc.$so.[0-9]* | \
		tr ' ' '\012' | egrep -v '\.[A-Za-z]*$' | $sed -e '
			h
			s/[0-9][0-9]*/0000&/g
			s/0*\([0-9][0-9][0-9][0-9][0-9]\)/\1/g
			G
			s/\n/ /' | \
		 sort | $sed -e 's/^.* //'`
	eval set \$$#
	$test -r $1 || set /lib/libc.$so
	$test -r $1 || set /lib/libsys_s.a
	;;
*)
	set blurfl
	;;
esac
if $test -r "$1"; then
	echo "Your (shared) C library seems to be in $1."
	libc="$1"
elif $test -r /lib/libc && $test -r /lib/clib; then
	echo "Your C library seems to be in both /lib/clib and /lib/libc."
	xxx=apollo
	libc='/lib/clib /lib/libc'
	if $test -r /lib/syslib; then
		echo "(Your math library is in /lib/syslib.)"
		libc="$libc /lib/syslib"
	fi
elif $test -r "$libc" || (test -h "$libc") >/dev/null 2>&1; then
	echo "Your C library seems to be in $libc, as you said before."
elif $test -r $incpath/usr/lib/libc.a; then
	libc=$incpath/usr/lib/libc.a;
	echo "Your C library seems to be in $libc.  That's fine."
elif $test -r /lib/libc.a; then
	libc=/lib/libc.a;
	echo "Your C library seems to be in $libc.  You're normal."
else
	if tans=`./loc libc.a blurfl/dyick $libpth`; $test -r "$tans"; then
		:
	elif tans=`./loc libc blurfl/dyick $libpth`; $test -r "$tans"; then
		libnames="$libnames "`./loc clib blurfl/dyick $libpth`
	elif tans=`./loc clib blurfl/dyick $libpth`; $test -r "$tans"; then
		:
	elif tans=`./loc Slibc.a blurfl/dyick $xlibpth`; $test -r "$tans"; then
		:
	elif tans=`./loc Mlibc.a blurfl/dyick $xlibpth`; $test -r "$tans"; then
		:
	else
		tans=`./loc Llibc.a blurfl/dyick $xlibpth`
	fi
	if $test -r "$tans"; then
		echo "Your C library seems to be in $tans, of all places."
		libc=$tans
	else
		libc='blurfl'
	fi
fi
if $test $xxx = apollo -o -r "$libc" || (test -h "$libc") >/dev/null 2>&1; then
	dflt="$libc"
	cat <<EOM

If the guess above is wrong (which it might be if you're using a strange
compiler, or your machine supports multiple models), you can override it here.

EOM
else
	dflt=''
	echo $libpth | tr ' ' '\012' | sort | uniq > libpath
	cat >&4 <<EOM
I can't seem to find your C library.  I've looked in the following places:

EOM
	$sed 's/^/	/' libpath
	cat <<EOM

None of these seems to contain your C library. I need to get its name...

EOM
fi
fn=f
rp='Where is your C library?'
. ./getfile
libc="$ans"

echo " "
echo $libc $libnames | tr ' ' '\012' | sort | uniq > libnames
set X `cat libnames`
shift
xxx=files
case $# in 1) xxx=file; esac
echo "Extracting names from the following $xxx for later perusal:" >&4
echo " "
$sed 's/^/	/' libnames >&4
echo " "
$echo $n "This may take a while...$c" >&4

nm $nm_opt $* 2>/dev/null >libc.tmp
$echo $n ".$c"
$grep fprintf libc.tmp > libc.ptf
xscan='eval "<libc.ptf $com >libc.list"; $echo $n ".$c" >&4'
xrun='eval "<libc.tmp $com >libc.list"; echo "done" >&4'
xxx='[ADTSIW]'
if com="$sed -n -e 's/__IO//' -e 's/^.* $xxx  *_[_.]*//p' -e 's/^.* $xxx //p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^__*//' -e 's/^\([a-zA-Z_0-9$]*\).*xtern.*/\1/p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e '/|UNDEF/d' -e '/FUNC..GL/s/^.*|__*//p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^.* D __*//p' -e 's/^.* D //p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^_//' -e 's/^\([a-zA-Z_0-9]*\).*xtern.*text.*/\1/p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^.*|FUNC |GLOB .*|//p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$grep '|' | $sed -n -e '/|COMMON/d' -e '/|DATA/d' \
				-e '/ file/d' -e 's/^\([^ 	]*\).*/\1/p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^.*|FUNC |GLOB .*|//p' -e 's/^.*|FUNC |WEAK .*|//p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^__//' -e '/|Undef/d' -e '/|Proc/s/ .*//p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e '/Def. Text/s/.* \([^ ]*\)\$/\1/p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
elif com="$sed -n -e 's/^[-0-9a-f ]*_\(.*\)=.*/\1/p'";\
	eval $xscan;\
	$contains '^fprintf$' libc.list >/dev/null 2>&1; then
		eval $xrun
else
	nm -p $* 2>/dev/null >libc.tmp
	$grep fprintf libc.tmp > libc.ptf
	if com="$sed -n -e 's/^.* [ADTSIW]  *_[_.]*//p' -e 's/^.* [ADTSIW] //p'";\
		eval $xscan; $contains '^fprintf$' libc.list >/dev/null 2>&1
	then
		nm_opt='-p'
		eval $xrun
	else
		echo " "
		echo "nm didn't seem to work right. Trying ar instead..." >&4
		com=''
		if ar t $libc > libc.tmp; then
			for thisname in $libnames; do
				ar t $thisname >>libc.tmp
			done
			$sed -e 's/\.o$//' < libc.tmp > libc.list
			echo "Ok." >&4
		else
			echo "ar didn't seem to work right." >&4
			echo "Maybe this is a Cray...trying bld instead..." >&4
			if bld t $libc | $sed -e 's/.*\///' -e 's/\.o:.*$//' > libc.list
			then
				for thisname in $libnames; do
					bld t $libnames | \
					$sed -e 's/.*\///' -e 's/\.o:.*$//' >>libc.list
					ar t $thisname >>libc.tmp
				done
				echo "Ok." >&4
			else
				echo "That didn't work either.  Giving up." >&4
				exit 1
			fi
		fi
	fi
fi
nm_extract="$com"
if $test -f /lib/syscalls.exp; then
	echo " "
	echo "Also extracting names from /lib/syscalls.exp for good ole AIX..." >&4
	$sed -n 's/^\([^ 	]*\)[ 	]*syscall$/\1/p' /lib/syscalls.exp >>libc.list
fi
;;
esac
$rm -f libnames libpath

: is a C symbol defined?
csym='tlook=$1;
case "$3" in
-v) tf=libc.tmp; tc=""; tdc="";;
-a) tf=libc.tmp; tc="[0]"; tdc="[]";;
*) tlook="^$1\$"; tf=libc.list; tc="()"; tdc="()";;
esac;
tx=yes;
case "$reuseval-$4" in
true-) ;;
true-*) tx=no; eval "tval=\$$4"; case "$tval" in "") tx=yes;; esac;;
esac;
case "$tx" in
yes)
	case "$runnm" in
	true)
		if $contains $tlook $tf >/dev/null 2>&1;
		then tval=true;
		else tval=false;
		fi;;
	*)
		echo "main() { extern short $1$tdc; printf(\"%hd\", $1$tc); }" > t.c;
		if $cc $ccflags $ldflags -o t t.c $libs >/dev/null 2>&1;
		then tval=true;
		else tval=false;
		fi;
		$rm -f t t.c;;
	esac;;
*)
	case "$tval" in
	$define) tval=true;;
	*) tval=false;;
	esac;;
esac;
eval "$2=$tval"'

: define an is-in-libc? function
inlibc='echo " "; td=$define; tu=$undef;
sym=$1; var=$2; eval "was=\$$2";
tx=yes;
case "$reuseval$was" in
true) ;;
true*) tx=no;;
esac;
case "$tx" in
yes)
	set $sym tres -f;
	eval $csym;
	case "$tres" in
	true)
		echo "$sym() found." >&4;
		case "$was" in $undef) . ./whoa; esac; eval "$var=\$td";;
	*)
		echo "$sym() NOT found." >&4;
		case "$was" in $define) . ./whoa; esac; eval "$var=\$tu";;
	esac;;
*)
	case "$was" in
	$define) echo "$sym() found." >&4;;
	*) echo "$sym() NOT found." >&4;;
	esac;;
esac'

: Check how to convert floats to strings.
echo " "
echo "Checking for an efficient way to convert floats to strings."
$cat >try.c <<'EOP'
#ifdef TRY_gconvert
#define Gconvert(x,n,t,b) gconvert((x),(n),(t),(b))
#endif
#ifdef TRY_gcvt
#define Gconvert(x,n,t,b) gcvt((x),(n),(b))
#endif
#ifdef TRY_sprintf
#define Gconvert(x,n,t,b) sprintf((b),"%.*g",(n),(x))
#endif
main() { 
	char buf[64]; 
	Gconvert(1.0, 8, 0, buf); 
	if (buf[0] != '1' || buf[1] != '\0')
		exit(1);
	Gconvert(0.0, 8, 0, buf); 
	if (buf[0] != '0' || buf[1] != '\0')
		exit(1);
	Gconvert(-1.0, 8, 0, buf); 
	if (buf[0] != '-' || buf[1] != '1' || buf[2] != '\0')
		exit(1);
	exit(0);
}
EOP
case "$d_Gconvert" in