perl 5.0 alpha 9

[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 3.0.1.3 1993/12/15 08:15:07 ram Exp $
#
# Generated on Wed May  4 14:59:36 EDT 1994 [metaconfig 3.0 PL22]

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$$

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

if test ! -t 0; then
	echo "Say 'sh Configure', not 'sh <Configure'"
	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
		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 Configure,
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 *

extensions=''
d_eunice=''
d_xenix=''
eunicefix=''
Mcc=''
awk=''
bash=''
bison=''
byacc=''
cat=''
chgrp=''
chmod=''
chown=''
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=''
hint=''
myuname=''
osname=''
osvers=''
Author=''
Date=''
Header=''
Id=''
Locker=''
Log=''
RCSfile=''
Revision=''
Source=''
State=''
afs=''
memalignbytes=''
bin=''
binexp=''
installbin=''
byteorder=''
cc=''
gccversion=''
ccflags=''
cppflags=''
ldflags=''
lkflags=''
optimize=''
cf_by=''
cf_time=''
contains=''
cpplast=''
cppminus=''
cpprun=''
cppstdin=''
d_access=''
d_bcmp=''
d_bcopy=''
d_bzero=''
d_casti32=''
castflags=''
d_castneg=''
d_charsprf=''
d_chsize=''
d_const=''
cryptlib=''
d_crypt=''
d_csh=''
d_dosuid=''
d_dup2=''
d_fchmod=''
d_fchown=''
d_fcntl=''
d_flexfnam=''
d_flock=''
d_getgrps=''
d_gethent=''
aphostname=''
d_gethname=''
d_phostname=''
d_uname=''
d_getpgrp2=''
d_getpgrp=''
d_getprior=''
d_htonl=''
d_isascii=''
d_killpg=''
d_link=''
d_lstat=''
d_memcmp=''
d_memcpy=''
d_memmove=''
d_memset=''
d_mkdir=''
d_msg=''
d_msgctl=''
d_msgget=''
d_msgrcv=''
d_msgsnd=''
d_open3=''
d_portable=''
d_readdir=''
d_rewinddir=''
d_seekdir=''
d_telldir=''
d_rename=''
d_rmdir=''
d_safebcpy=''
d_safemcpy=''
d_select=''
d_sem=''
d_semctl=''
d_semget=''
d_semop=''
d_setegid=''
d_seteuid=''
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_voidshmat=''
d_shmctl=''
d_shmdt=''
d_shmget=''
d_oldsock=''
d_socket=''
d_sockpair=''
sockethdr=''
socketlib=''
d_statblks=''
d_stdstdio=''
d_index=''
d_strchr=''
d_strctcpy=''
d_strerrm=''
d_strerror=''
d_sysernlst=''
d_syserrlst=''
d_symlink=''
d_syscall=''
d_system=''
d_time=''
timetype=''
clocktype=''
d_times=''
d_truncate=''
d_usendir=''
i_ndir=''
ndirc=''
ndirlib=''
ndiro=''
d_vfork=''
d_voidsig=''
signal_t=''
d_volatile=''
d_charvspr=''
d_vprintf=''
d_wait4=''
d_waitpid=''
cccdlflags=''
ccdlflags=''
dldir=''
dlobj=''
dlsrc=''
lddlflags=''
shlibsuffix=''
usedl=''
gidtype=''
groupstype=''
h_fcntl=''
h_sysfile=''
i_dbm=''
d_dirnamlen=''
i_dirent=''
i_dlfcn=''
i_fcntl=''
i_gdbm=''
i_grp=''
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_sdbm=''
i_stdarg=''
i_stddef=''
i_string=''
strings=''
i_sysdir=''
i_sysfile=''
d_voidtty=''
i_bsdioctl=''
i_sysioctl=''
i_syssockio=''
i_sysndir=''
i_sysselct=''
i_sgtty=''
i_termio=''
i_termios=''
i_systime=''
i_systimek=''
i_time=''
timeincl=''
i_unistd=''
i_utime=''
i_varargs=''
i_varhdr=''
i_vfork=''
intsize=''
lib=''
libexp=''
libc=''
libpth=''
plibpth=''
xlibpth=''
libs=''
lns=''
lseektype=''
d_mymalloc=''
mallocobj=''
mallocsrc=''
malloctype=''
usemymalloc=''
installmansrc=''
manext=''
mansrc=''
mansrcexp=''
huge=''
large=''
medium=''
models=''
small=''
split=''
mydomain=''
myhostname=''
phostname=''
c=''
n=''
groupcat=''
hostcat=''
passcat=''
orderlib=''
ranlib=''
package=''
spackage=''
installprivlib=''
privlib=''
privlibexp=''
prototype=''
ptrsize=''
randbits=''
installscript=''
scriptdir=''
scriptdirexp=''
sig_name=''
sharpbang=''
shsharp=''
spitshell=''
startsh=''
stdchar=''
sysman=''
uidtype=''
nm_opt=''
runnm=''
usenm=''
incpath=''
mips=''
mips_type=''
usrinc=''
defvoidused=''
voidflags=''
yacc=''
yaccflags=''
CONFIG=''

: 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
	set x `awk '{print $1}' <MANIFEST | grep '\.SH'`
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 = "deEf:hrsSV";	# 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 $arg; done | awk -f options.awk`
eval "set $*"
shift
rm -f options.awk

: set up default values
fastread=''
reuseval=false
config_sh=''
alldone=''
error=''
silent=''
extractsh=''

: 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 "Configure: 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;;
	-S) shift; extractsh=true;;
	-V) echo "Configure generated by metaconfig 3.0 PL22." >&2
		exit 0;;
	--) break;;
	-*) echo "Configure: unknown option $1" >&2; shift; error=true;;
	*) break;;
	esac
done

case "$error" in
true)
	cat >&2 <<EOM
Usage: Configure [-dehrESV] [-f config.sh]
  -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.
  -E : stop at the end of questions, after having produced config.sh.
  -S : perform variable substitutions on all .SH files (can mix with -f)
  -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

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
	echo " "
	. ./UU/extract
	rm -rf UU
	echo "Done."
	exit 0
	;;
esac

: set package name
package=perl5

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

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

trap 'echo " "; rm -rf $rmlist; exit 1' 1 2 3 15

: 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
attrlist="__alpha __bsdi__ BSD_NET2 DGUX M_I186 M_I286 M_I386"
attrlist="$attrlist M_I8086 M_XENIX UTS __DGUX__"
attrlist="$attrlist _AIX __STDC__ __m88k__ ansi bsd4_2 gcos gimpel"
attrlist="$attrlist hp9000s300 hp9000s400 hp9000s500 hp9000s700"
attrlist="$attrlist hp9000s800 hpux"
attrlist="$attrlist i186 i386 i486 i8086 iAPX286 ibm interdata"
attrlist="$attrlist m88k mc300 mc500 mc68000 mc68k mc700 mert"
attrlist="$attrlist mips NeXT ns16000 ns32000 nsc32000 os"
attrlist="$attrlist __osf__ pdp11 posix"
attrlist="$attrlist pyr sinix sony sparc sun tower tower32 tower32_600"
attrlist="$attrlist tower32_800 tss u3b2 u3b20 u3b200 u3b5 ultrix unix"
attrlist="$attrlist __unix__ vax venix xenix z8000"

i_whoami=''
: List of extensions we want:
extensions=''
gccversion=''
: no include file wanted by default
inclwanted=''

: File to use for dynamic loading
usedl=''
gidtype=''
groupstype=''
: change the next line if compiling for Xenix/286 on Xenix/386
xlibpth='/usr/lib/386 /lib/386'

: general looking path for locating libraries
libpth="/usr/lib/large /lib /usr/lib $xlibpth /lib/large"
libpth="$libpth /usr/lib/small /lib/small"
libpth="$libpth /usr/ccs/lib /usr/ucblib /usr/local/lib"

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

libswanted=" net socket inet nsl nm sdbm gdbm ndbm dbm malloc dl dld sun m c_s posix cposix ndir dir ucb bsd BSD PW x "

: full support for void wanted by default
defvoidused=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
		"!")
			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 perl 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.

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.  Also, let me (lwall@netlabs.com)
know how I blew it.  If you can't run Configure for some reason, you'll have to
generate a config.sh file by hand.

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..."
	echo "#!/bin/cat" >try
	$eunicefix try
	chmod +x try
	./try > today
	if test -s today; then
		echo "It does."
		sharpbang='#!'
	else
		echo "#! /bin/cat" > 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
	echo "exec grep -v '^[ 	]*#'" >spitshell
	chmod +x spitshell
	$eunicefix spitshell
	spitshell=`pwd`/spitshell
	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
	;;
	*)
	if test -f \$dir/\$thing; then
		echo \$dir/\$thing
		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
cp
echo
expr
grep
ln
mkdir
mv
rm
sed
sort
touch
tr
uniq
"
trylist="
Mcc
bison
byacc
cpp
csh
date
egrep
find
line
nroff
perl
test
uname
"
pth=`echo $PATH | sed -e 's/:/ /g'`
pth="$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 "I don't know where $file is.  I hope it's in everyone's PATH."
		;;
	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 "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

: 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 | $sed -e 's/^[^=]*=//' | \
	tr '[A-Z]' '[a-z]' | tr '\012' ' '`
dflt=n
if test "$fastread" = yes; then
	dflt=y
elif test -f ../config.sh; then
	oldmyuname=''
	if $contains myuname= ../config.sh >/dev/null 2>&1; then
		eval "old`grep myuname= ../config.sh`"
	fi
	if test "X$myuname" = "X$oldmyuname"; then
		dflt=y
	fi
fi

: 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"
		tans="$c"
		. ./config.sh
		cp config.sh UU
		n="$tmp"
		c="$tans"
		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=sgi
	$test -f /xenix && osname=sco_xenix
	$test -f /dynix && osname=dynix
	$test -f /dnix && osname=dnix
	$test -f /bin/mips && /bin/mips && osname=mips
	$test -d /NextApps && test -f /usr/adm/software_version && osname=next
	$test -d /usr/include/minix && osname=minix
	if $test -f $uname; then
		set X $myuname
		shift

		$test -f $5.sh && dflt="$dflt $5"

		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 $contains _SYSV3 /usr/include/stdio.h > /dev/null 2>&1 ; then
					osvers=3.2.3
				elif $contains _POSIX_SOURCE /usr/include/stdio.h > /dev/null 2>&1 ; then
					osvers=3.2.2
			    fi
		       fi
		       ;;
		esac

		case "$1" in
		aix) osname=aix_rs ;;
		sunos) osname=sunos
			case "$3" in
			[34]*) osvers=$3 ;;
			5*) osname=solaris
				osvers=`echo $3 | $sed 's/^5/2/g'` ;;
			esac
			;;
		solaris) osname=solaris
			case "$3" in
			5*) osvers=`echo $3 | $sed 's/^5/2/g'` ;;
			esac
			;;
		dnix) osname=dnix ;;
		dgux) osname=dgux ;;
		genix) osname=genix ;;
		hp*ux) osname=hpux ;;
		next) osname=next ;;
		irix) osname=sgi ;;
		ultrix) osname=ultrix
			case "$3" in
			1*) osvers=1 ;;
			2*) osvers=2 ;;
			3*) osvers=3 ;;
			4*) osvers=4 ;;
			esac
			;;
		osf1)	case "$5" in
				alpha)  osname=dec_osf
					case "$3" in
                    	[vt]1\.*) osvers=1 ;;
                        [vt]2\.*) osvers=2 ;;
                        [vt]3\.*) osvers=3 ;;
					esac
                    ;;
			hp*)	osname=hp_osf1	;;	# TR
			mips)	osname=mips_osf1 ;;	# TR
			# TR =	Technology Releases: (un^N)supported
			esac
			;;
		uts) osname=uts ;;
		$2) case "$osname" in
			*isc*) ;;
			*)	if test -f /etc/systemid; then
				osname=sco
				: Does anyone know if these next gyrations are needed
				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
				fi
				;;
			esac
			;;
		esac
	else
		if test -f /vmunix -a -f news_os.sh; then
			(what /vmunix | 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
		fi
	fi
	
	: Now look for a hint file osname_osvers
	file=`echo "${osname}_${osvers}" | sed -e 's@\.@_@g' -e 's@_$@@'`
	case "$file" in
	'') dflt=none ;;
	*)  case "$osvers" in
		'') dflt=$file 
			;;
		*)  if $test -f $file.sh ; then
				dflt=$file
			elif $test -f "${osname}.sh" ; then
				dflt="${osname}"
			else
				dflt=none
			fi
			;;
		esac
		;;
	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.sh"
	else
		hintfile=none
	fi

	cd ..
fi
cd UU
;;
*)
	echo " "
	echo "Fetching default answers from $config_sh..." >&4
	tmp="$n"
	tans="$c"
	cd ..
	cp $config_sh config.sh 2>/dev/null
	. ./config.sh
	cd UU
	cp ../config.sh .
	n="$tmp"
	c="$tans"
	hint=previous
	;;
esac

: 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.
Say "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 "$ans" in
    none)  osname='' ;;
    *) osname="$ans" ;;
esac

case "$osvers" in
	''|' ')  
		case "$hintfile" in
		none) dflt=none ;;
		*)	dflt=`echo $hintfile | sed -e 's/\.sh$//' -e 's/^[^_]*//'`
    		dflt=`echo $dflt | sed -e 's/^_//' -e 's/_/./g'` ;;
		esac
		;;
	*) dflt="$osvers" ;;
esac
rp="Operating system version?"
. ./myread
case "$ans" in
    none)  osvers='' ;;
    *) osvers="$ans" ;;
esac
: who configured the system
cf_time=`$date 2>&1`
cf_by=`( (logname) 2>/dev/null || whoami) 2>&1`

: determine where manual pages are on this system
echo " "
case "$sysman" in
'') 
	syspath='/usr/man/man1 /usr/man/man1 /usr/man/mann'
	syspath="$syspath /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"
	sysman=`./loc . $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
$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 $contains SIGTSTP foo >/dev/null 2>&1 ; then
	echo "Looks kind of like a BSD system, but we'll see..."
	echo exit 0 >bsd
else
	echo "Looks kind of like a Version 7 system, but we'll see..."
	echo exit 0 >v7
fi
case "$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
case "$cc" in
gcc*)   echo "Checking out which version of gcc"
$cat >gccvers.c <<EOM
#include <stdio.h>
int main()
{
char *v;
v = "unknown";
#ifdef __GNUC__
#  ifdef __VERSION__
	v = __VERSION__;
#  endif
#endif
switch((int) v[0])
  {
    case '1':  printf("1\n"); break;
    case '2':  printf("2\n"); break;
    case '3':  printf("3\n"); break;
    default:   break;
  }
#ifdef __GNUC__
return 0;
#else
return 1;
#endif
}
EOM
	if $cc -o gccvers gccvers.c >/dev/null 2>&1; then
	    gccversion=`./gccvers`
		echo "You appear to have version $gccversion."
	else
		echo "Doesn't appear to be GNU cc."
	fi
	$rm -f gccvers*
	if $test "$gccversion" = '1'; then
		cpp=`./loc gcc-cpp $cpp $pth`
	fi
	;;
esac
: decide how portable to be
case "$d_portable" in
"$define") dflt=y;;
*)	dflt=n;;
esac
$cat <<'EOH'
 
I can set things up so that your shell scripts and binaries are more portable,
at what may be a noticable cost in performance.  In particular, if you
ask to be portable, the following happens:

     1) Shell scripts will rely on the PATH variable rather than using
	the paths derived above.
     2) ~username interpretations will be done at run time rather than
	by Configure.

EOH
rp="Do you expect to run these scripts and binaries on multiple machines?"
. ./myread
case "$ans" in
	y*) d_portable="$define"
	for file in $loclist $trylist; do
		eval $file="\$file"
	done
	;;
	*)  d_portable="$undef" ;;
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=''
orig_rp="$rp"
orig_dflt="$dflt"

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
*f*) type='File';;
*d*) type='Directory';;
*l*) type='Locate'; fn=`expr $fn : '.*:\(.*\)'`;;
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="$rp (~name ok)";;
	esac
	. UU/myread
	case "$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 is $value on this particular system.)"
				fi
				;;
			*) value="$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 "$ansexp"; then
					type=''
				fi
				;;
			Locate)
				if test -d "$value"; then
					echo "(Looking for $fn in directory $value.)"
					value="$value/$fn"
				fi
				if test -f "$value"; then
					type=''
				fi
				;;
			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"
EOSC

: What should the include directory be ?
echo " "
$echo $n "Hmm...  $c"
case "$usrinc" in
'') dflt='/usr/include';;
*) dflt=$usrinc;;
esac
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."
else
	echo "Doesn't look like a MIPS system."
	echo "exit 1" >mips
	chmod +x mips
	$eunicefix mips
fi
echo " "
fn=d/
rp='Where are the include files you want to use?'
. ./getfile
usrinc="$ans"

: determine optimize, if desired, or use for debug flag also
case "$optimize" in
' ') dflt="none";;
'') dflt="-g";;
*) dflt="$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=''
case "$ccflags" in
'')	case "$cc" in
	*gcc*) if $test "$gccversion" = "1"; then
			dflt='-fpcc-struct-return'
		   fi ;;
	esac
	case "$optimize" in
	*-g*) dflt="$dflt -DDEBUGGING";;
	esac
	case "$cc" in
	*gcc*)	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 "$mips_type" in
*BSD*) ;;
'') ;;
*) inclwanted="$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 "$dflt" in
'') dflt=none;;
esac
case "$ccflags" in
'') ;;
*) dflt="$ccflags";;
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.
To use no flags, specify the word "none".

Your C compiler might also need additional flags, such as -DJMPCLOBBER,
-DHIDEMYMALLOC or -DCRIPPLED_CC.
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="$ccflags"
case "$cc" in
*gcc*)  case "$gccversion" in
	1) cppflags="$cppflags -D__GNUC__" ;;
	esac
	;;
esac
case "$mips_type" in
'');;
*BSD*) cppflags="$cppflags -DSYSTYPE_BSD43";;
esac
case "$cppflags" in
'');;
*)  set X $cppflags
	cppflags=''
	for flag
	do
		case $flag in
		-D*|-I*|-traditional|-ansi|-nostdinc|-posix|-Xp) cppflags="$cppflags $flag";;
		esac
	done
	case "$cppflags" in
	*-*)  echo "(C preprocessor flags: $cppflags)";;
	esac
	;;
esac

: flags used in final linking phase
case "$ldflags" in
'') if venix; then
		dflt='-i -z'
	else
		dflt='none'
	fi
	;;
*) dflt="$ldflags";;
esac
echo " "
rp="Any additional ld flags (NOT including libraries)?"
. ./myread
case "$ans" in
none) ldflags='';;
*) ldflags="$ans";;
esac
rmlist="$rmlist pdp11"

: Initialize h_fcntl
h_fcntl=false

: Initialize h_sysfile
h_sysfile=false

: Set private lib path
case "$plibpth" in
'') if mips; then
		plibpth="$incpath/usr/lib /usr/local/lib /usr/ccs/lib"
	fi;;
esac
libpth="$plibpth $libpth"
: Now check and see which directories actually exist.
xxx=''
for yyy in $libpth
do
    if $test -d $yyy; then
		xxx="$xxx $yyy"
    fi
done
libpth="$xxx"
$cat <<EOM
Some systems have incompatible or broken versions of libraries.  Where
should I look for libraries?
EOM

dflt="$libpth"
echo " "
rp="Directories to use for library searches?"
. ./myread
case "$ans" in
none) libpth=' ';;
*) libpth="$ans";;
esac
: Looking for optional libraries
echo " "
echo "Checking for optional libraries..." >&4
case "$libs" in
' '|'') dflt='';;
*) dflt="$libs";;
esac
case "$libswanted" in
'') libswanted='c_s';;
esac
for thislib in $libswanted; do
	case "$thislib" in
	dbm) thatlib=ndbm;;
	*_s) thatlib=NONE;;
	*) thatlib=${thislib}_s;;
	esac
	xxx=`./loc lib$thislib.a X $libpth`
	yyy=`./loc lib$thatlib.a X $libpth`
	zzz=`./loc lib$thislib.so.[0-9]'*' X $libpth`
	if $test -f $xxx; then
		echo "Found -l$thislib."
		case "$dflt" in
		*"-l$thislib "*|*-l$thislib|*"-l$thatlib "*|*-l$thatlib) ;;
		*) dflt="$dflt -l$thislib";;
		esac
	elif $test -f $yyy; then
		echo "Found -l$thatlib."
		case "$dflt" in
		*"-l$thatlib "*|*-l$thatlib) ;;
		*) dflt="$dflt -l$thatlib";;
		esac
	elif $test -f $zzz; then
		echo "Found -$thislib."
		case "$dflt" in
		*"-l$thislib "*|*-l$thislib) ;;
		*) dflt="$dflt -l$thislib";;
		esac
	else
		xxx=`./loc Slib$thislib.a X $xlibpth`
		yyy=`./loc Slib$thatlib.a X $xlibpth`
		if $test -f $xxx; then
			echo "Found -l$thislib."
			case "$dflt" in
			*"-l$thislib "*|*-l$thislib|*"-l$thatlib "*|*-l$thatlib) ;;
			*) dflt="$dflt -l$thislib";;
			esac
		elif $test -f $yyy; then
			echo "Found -l$thatlib."
			case "$dflt" in
			*"-l$thatlib "*|*-l$thatlib) ;;
			*) dflt="$dflt -l$thatlib";;
			esac
		else
			echo "No -l$thislib."
		fi
	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 $libpth`
	esac
	;;
esac
libpth="$plibpth $libpth"
libnames='';
case "$libs" in
'') ;;
*)  for thislib in $libs; do
	case "$thislib" in
	-l*)
		thislib=`expr X$thislib : 'X-l\(.*\)'`
		try=`./loc lib$thislib.a blurfl/dyick $libpth`
		if test ! -f $try; then
			try=`./loc lib$thislib blurfl/dyick $libpth`
			if test ! -f $try; then
				try=`./loc lib$thislib.so.'*' blurfl/dyick $libpth`
				if test ! -f $try; then
					try=`./loc $thislib blurfl/dyick $libpth`
					if test ! -f $try; then
						try=`./loc Slib$thislib.a blurfl/dyick $xlibpth`
						if test ! -f $try; then
							try=''
						fi
					fi
				fi
			fi
		fi
		libnames="$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 /usr/lib/libc.so.[0-9]*
	$test -r $1 || set /lib/libsys_s.a
	eval set \$$#
	;;
*)
	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 $com >libc.list"; echo "done" >&4'
if com="$sed -n -e 's/^.* [ADTS]  *_[_.]*//p' -e 's/^.* [ADTS] //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
else
	nm -p $* 2>/dev/null >libc.tmp
	com="$sed -n -e 's/^.* [ADTS]  *_[_.]*//p' -e 's/^.* [ADTS] //p'";\
	eval "<libc.tmp $com >libc.list"
	if $contains '^fprintf$' libc.list >/dev/null 2>&1; then
		nm_opt='-p'
		echo "done" >&4
	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 int $1$tdc; printf(\"%d\", $1$tc); }" > t.c;
		if $cc $ccflags -o t t.c $ldflags $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"'

: 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

: 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'

: 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

: determine filename position in cpp output
echo " "
echo "Computing filename position in cpp output for #include directives..." >&4
echo '#include <stdio.h>' > foo.c
$cat >fieldn <<EOF
$startsh
$cppstdin $cppminus $cppflags <foo.c 2>/dev/null | \
$grep '^[ 	]*#.*stdio\.h' | \
while read cline; do
	pos=1
	set \$cline
	while $test \$# -gt 0; do
		if $test -r \`echo \$1 | $tr -d '"'\`; then
			echo "\$pos"
			exit 0
		fi
		shift
		pos=\`expr \$pos + 1\`
	done
done
EOF
chmod +x fieldn
fieldn=`./fieldn`
$rm -f foo.c fieldn
case $fieldn in
'') pos='???';;
1) pos=first;;
2) pos=second;;
3) pos=third;;
*) pos="${fieldn}th";;
esac
echo "Your cpp writes the filename in the $pos field of the line."

: locate header file
$cat >findhdr <<EOF
$startsh
wanted=\$1
name=''
if test -f $usrinc/\$wanted; then
	echo "$usrinc/\$wanted"
	exit 0
fi
awkprg='{ print \$$fieldn }'
echo "#include <\$wanted>" > foo\$\$.c
$cppstdin $cppminus $cppflags < foo\$\$.c 2>/dev/null | \
$grep "^[ 	]*#.*\$wanted" | \
while read cline; do
	name=\`echo \$cline | $awk "\$awkprg" | $tr -d '"'\`
	case "\$name" in
	*/\$wanted) echo "\$name"; exit 0;;
	*) name='';;
	esac;
done;
$rm -f foo\$\$.c;
case "\$name" in
'') exit 1;;
esac
EOF
chmod +x findhdr

: access call always available on UNIX
set access d_access
eval $inlibc

: locate the flags for 'access()'
case "$d_access" in
"$define")
	echo " "
	$cat >access.c <<'EOCP'
#include <sys/types.h>
#ifdef I_FCNTL
#include <fcntl.h>
#endif
#ifdef I_SYS_FILE
#include <sys/file.h>
#endif
#ifdef I_UNISTD
#include <unistd.h>
#endif
main() {
	exit(R_OK);
}
EOCP
	: check sys/file.h first, no particular reason here
	if $test `./findhdr sys/file.h` && \
		$cc $cppflags -DI_SYS_FILE access.c -o access >/dev/null 2>&1 ; then
		h_sysfile=true;
		echo "<sys/file.h> defines the *_OK access constants." >&4
	elif $test `./findhdr fcntl.h` && \
		$cc $cppflags -DI_FCNTL access.c -o access >/dev/null 2>&1 ; then
		h_fcntl=true;
		echo "<fcntl.h> defines the *_OK access constants." >&4
	elif $test `./findhdr unistd.h` && \
		$cc $cppflags -DI_UNISTD access.c -o access >/dev/null 2>&1 ; then
		echo "<unistd.h> defines the *_OK access constants." >&4
	else
		echo "I can't find the four *_OK access constants--I'll use mine." >&4
	fi
	;;
esac
$rm -f access*

: see if bcmp exists
set bcmp d_bcmp
eval $inlibc

: see if bcopy exists
set bcopy d_bcopy
eval $inlibc

: see if bzero exists
set bzero d_bzero
eval $inlibc

: check for length of integer
echo " "
case "$intsize" in
'')
	echo "Checking to see how big your integers are..." >&4
	$cat >try.c <<'EOCP'
#include <stdio.h>
main()
{
	printf("%d\n", sizeof(int));
}
EOCP
	if $cc $ccflags try.c -o try >/dev/null 2>&1 ; then
		dflt=`./try`
	else
		dflt='4'
		echo "(I can't seem to compile the test program.  Guessing...)"
	fi
	;;
*)
	dflt="$intsize"
	;;
esac
rp="What is the size of an integer (in bytes)?"
. ./myread
intsize="$ans"
$rm -f try.c try

: 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'

: check for ability to cast large floats to 32-bit ints.
echo " "
echo 'Checking whether your C compiler can cast large floats to int32.' >&4
if $test "$intsize" -eq 4; then
    xxx=int
else
    xxx=long
fi

$cat >try.c <<EOCP
#include <sys/types.h>
#include <signal.h>
blech() { exit(3); }
main()
{
        $xxx i32;
	double f;
	int result = 0;
	signal(SIGFPE, blech);

	f = (double) 0x7fffffff;
	f = 10 * f;
	i32  = ( $xxx )f;

	if (i32 != ( $xxx )f)
		result |= 1;
	exit(result);
}
EOCP
if $cc -o try $ccflags try.c >/dev/null 2>&1; then
	./try
	yyy=$?
else
	yyy=1
fi
case "$yyy" in
0)	val="$define"
	echo "Yup, it can."
	;;
*)	val="$undef"
	echo "Nope, it can't."
	;;
esac
set d_casti32
eval $setvar
$rm -f try try.*
: check for ability to cast negative floats to unsigned
echo " "
echo 'Checking whether your C compiler can cast negative float to unsigned.' >&4
$cat >try.c <<'EOCP'
#include <signal.h>
blech() { exit(3); }
main()
{
	double f = -123;
	unsigned long along;
	unsigned int aint;
	unsigned short ashort;
	int result = 0;

	signal(SIGFPE, blech);
	along = (unsigned long)f;
	aint = (unsigned int)f;
	ashort = (unsigned short)f;
	if (along != (unsigned long)-123)
		result |= 1;
	if (aint != (unsigned int)-123)
		result |= 1;
	if (ashort != (unsigned short)-123)
		result |= 1;
	f = (double)0x40000000;
	f = f + f;
	along = 0;
	along = (unsigned long)f;
	if (along != 0x80000000)
		result |= 2;
	f -= 1.;
	along = 0;
	along = (unsigned long)f;
	if (along != 0x7fffffff)
		result |= 1;
	f += 2.;
	along = 0;
	along = (unsigned long)f;
	if (along != 0x80000001)
		result |= 2;
	exit(result);

}
EOCP
if $cc -o try $ccflags try.c >/dev/null 2>&1; then
	./try
	castflags=$?
else
	castflags=3
fi
case "$castflags" in
0)	val="$define"
	echo "Yup, it can."
	;;
*)	val="$undef"
	echo "Nope, it can't."
	;;
esac
set d_castneg
eval $setvar
$rm -f try.*

: see if sprintf is declared as int or pointer to char
echo " "
$cat >ucbsprf.c <<'EOF'
main()
{
	int sprintf();
	char buf[10];
	exit((unsigned long)sprintf(buf,"%s","foo") > 10L);
}
EOF
if $cc ucbsprf.c -o ucbsprf >/dev/null 2>&1 && ./ucbsprf; then
	echo "Your sprintf() returns (int)." >&4
	val="$undef"
else
	echo "Your sprintf() returns (char*)." >&4
	val="$define"
fi
set d_charsprf
eval $setvar
$rm -f ucbsprf*

: see if vprintf exists
echo " "
if set vprintf val -f d_vprintf; eval $csym; $val; then
	echo 'vprintf() found.' >&4
	val="$define"
	$cat >vprintf.c <<'EOF'
#include <varargs.h>

main() { xxx("foo"); }

xxx(va_alist)
va_dcl
{
	va_list args;
	char buf[10];

	va_start(args);
	exit((unsigned long)vsprintf(buf,"%s",args) > 10L);
}
EOF
	if $cc $ccflags vprintf.c -o vprintf >/dev/null 2>&1 && ./vprintf; then
		echo "Your vsprintf() returns (int)." >&4
		val2="$undef"
	else
		echo "Your vsprintf() returns (char*)." >&4
		val2="$define"
	fi
else
	echo 'vprintf() NOT found.' >&4
		val="$undef"
		val2="$undef"
fi
set d_vprintf
eval $setvar
val=$val2
set d_charvspr
eval $setvar

: see if chsize exists
set chsize d_chsize
eval $inlibc

: check for const keyword
echo " "
echo 'Checking to see if your C compiler knows about "const"...' >&4
$cat >const.c <<'EOCP'
typedef struct spug { int drokk; } spug;
main()
{
	const char *foo;
	const spug y;
}
EOCP
if $cc -c $ccflags const.c >/dev/null 2>&1 ; then
	val="$define"
	echo "Yup, it does."
else
	val="$undef"
	echo "Nope, it doesn't."
fi
set d_const
eval $setvar

: see if crypt exists
echo " "
if set crypt val -f d_crypt; eval $csym; $val; then
	echo 'crypt() found.' >&4
	val="$define"
	cryptlib=''
else
	cryptlib=`./loc Slibcrypt.a "" $xlibpth`
	if $test -z "$cryptlib"; then
		cryptlib=`./loc Mlibcrypt.a "" $xlibpth`
	else
		cryptlib=-lcrypt
	fi
	if $test -z "$cryptlib"; then
		cryptlib=`./loc Llibcrypt.a "" $xlibpth`
	else
		cryptlib=-lcrypt
	fi
	if $test -z "$cryptlib"; then
		cryptlib=`./loc libcrypt.a "" $libpth`
	else
		cryptlib=-lcrypt
	fi
	if $test -z "$cryptlib"; then
		echo 'crypt() NOT found.' >&4
		val="$undef"
	else
		val="$define"
	fi
fi
set d_crypt
eval $setvar

: get csh whereabouts
case "$csh" in
'csh') val="$undef" ;;
*) val="$define" ;;
esac
set d_csh
eval $setvar

: see if this is a dirent system
echo " "
if xinc=`./findhdr dirent.h`; $test "$xinc"; then
	val="$define"
	echo "<dirent.h> found." >&4
else
	val="$undef"
	if xinc=`./findhdr sys/dir.h`; $test "$xinc"; then
		echo "<sys/dir.h> found." >&4
		echo " "
	else
		xinc=`./findhdr sys/ndir.h`
	fi
	echo "<dirent.h> NOT found." >&4
fi
set i_dirent
eval $setvar

: see if the directory entry stores field length
echo " "
if $contains 'd_namlen' $xinc >/dev/null 2>&1; then
	echo "Good, your directory entry keeps length information in d_namlen." >&4
	val="$define"
else
	echo "Your directory entry does not know about the d_namlen field." >&4
	val="$undef"
fi
set d_dirnamlen
eval $setvar

: now see if they want to do setuid emulation
case "$d_dosuid" in
'') dflt=n;;
"$undef") dflt=n;;
*) dflt=y;;
esac
cat <<EOM
 
Some sites have disabled setuid #! scripts because of a bug in the kernel
that prevents them from being secure.  If you are on such a system, the
setuid/setgid bits on scripts are currently useless.  It is possible for
$package to detect those bits and emulate setuid/setgid in a secure fashion
until a better solution is devised for the kernel problem.

EOM
rp="Do you want to do setuid/setgid emulation?"
. ./myread
case "$ans" in
y*)  d_dosuid="$define";;
*) d_dosuid="$undef";;
esac

: see if dup2 exists
set dup2 d_dup2
eval $inlibc

: see if fchmod exists
set fchmod d_fchmod
eval $inlibc

: see if fchown exists
set fchown d_fchown
eval $inlibc

: see if this is an fcntl system
set fcntl d_fcntl
eval $inlibc

: 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*

: see if flock exists
set flock d_flock
eval $inlibc

: see if gethostent exists
set gethostent d_gethent
eval $inlibc

: see if getpgrp exists
set getpgrp d_getpgrp
eval $inlibc

: see if getpgrp2 exists
set getpgrp2 d_getpgrp2
eval $inlibc

: see if getpriority exists
set getpriority d_getprior
eval $inlibc

: define an alternate in-header-list? function
inhdr='echo " "; td=$define; tu=$undef; yyy=$@;
cont=true; xxf="echo \"<\$1> found.\" >&4";
case $# in 2) xxnf="echo \"<\$1> NOT found.\" >&4";;
*) xxnf="echo \"<\$1> NOT found, ...\" >&4";;
esac;
case $# in 4) instead=instead;; *) instead="at last";; esac;
while $test "$cont"; do
	xxx=`./findhdr $1`
	var=$2; eval "was=\$$2";
	if $test "$xxx" && $test -r "$xxx";
	then eval $xxf;
		eval "case \"\$$var\" in $undef) . whoa; esac"; eval "$var=\$td";
		cont="";
	else eval $xxnf;
		eval "case \"\$$var\" in $define) . whoa; esac"; eval "$var=\$tu"; fi;
	set $yyy; shift; shift; yyy=$@;
	case $# in 0) cont="";;
	2) xxf="echo \"but I found <\$1> $instead.\" >&4";
		xxnf="echo \"and I did not find <\$1> either.\" >&4";;
	*) xxf="echo \"but I found <\$1\> instead.\" >&4";
		xxnf="echo \"there is no <\$1>, ...\" >&4";;
	esac;
done;
while $test "$yyy";
do set $yyy; var=$2; eval "was=\$$2";
	eval "case \"\$$var\" in $define) . whoa; esac"; eval "$var=\$tu";
	set $yyy; shift; shift; yyy=$@;
done'

: see if this is a netinet/in.h or sys/in.h system
set netinet/in.h i_niin sys/in.h i_sysin
eval $inhdr

: see if htonl --and friends-- exists
set htonl d_htonl
eval $inlibc
: Maybe they are macros.
case "$d_htonl" in
'define') ;;
*) cat > try.c <<EOM
#include <stdio.h>
#include <sys/types.h>
#$i_niin I_NETINET_IN
#$i_sysin I_SYS_IN
#ifdef I_NETINET_IN
# include <netinet/in.h>
#endif
#ifdef I_SYS_IN
# include <sys/in.h>
#endif
int main()
{
  int x;
  printf("x = ", htonl(7));
}
EOM
    if $cc $ccflags -c try.c >/dev/null 2>&1; then
        d_htonl="$define"
	echo "But it seems to be defined as a macro."
    fi
    $rm -f try.* try
    ;;
esac
: Look for isascii
echo " "
$cat >isascii.c <<'EOCP'
#include <stdio.h>
#include <ctype.h>
main() {
        int c = 'A';
	if (isascii(c))
	    exit(0);
	else
	    exit(1);
}
EOCP
if $cc $cppflags -o isascii isascii.c >/dev/null 2>&1 ; then
    echo "isascii() found."
    val="$define"
else
    echo "isascii() NOT found."
    val="$undef"
fi
set d_isascii
eval $setvar
$rm -f isascii*
: see if killpg exists
set killpg d_killpg
eval $inlibc

: see if link exists
set link d_link
eval $inlibc

: see if lstat exists
set lstat d_lstat
eval $inlibc

: see if memcmp exists
set memcmp d_memcmp
eval $inlibc

: see if memcpy exists
set memcpy d_memcpy
eval $inlibc

: see if memmove exists
set memmove d_memmove
eval $inlibc

: see if memset exists
set memset d_memset
eval $inlibc

: see if mkdir exists
set mkdir d_mkdir
eval $inlibc

: see if msgctl exists
set msgctl d_msgctl
eval $inlibc

: see if msgget exists
set msgget d_msgget
eval $inlibc

: see if msgsnd exists
set msgsnd d_msgsnd
eval $inlibc

: see if msgrcv exists
set msgrcv d_msgrcv
eval $inlibc

: see how much of the 'msg*(2)' library is present.
h_msg=true
echo " "
case "$d_msgctl$d_msgget$d_msgsnd$d_msgrcv" in
*"$undef"*) h_msg=false;;
esac
: we could also check for sys/ipc.h ...
if $h_msg && $test `./findhdr sys/msg.h`; then
	echo "You have the full msg*(2) library." >&4
	val="$define"
else
	echo "You don't have the full msg*(2) library." >&4
	val="$undef"
fi
set d_msg
eval $setvar

: determine which malloc to compile in
:  Old versions had dflt='y' only for bsd or v7.
echo " "
case "$usemymalloc" in
'')
	if bsd || v7; then
		dflt='y'
	else
		dflt='y'
	fi
	;;
*)  dflt="$usemymalloc"
	;;
esac
rp="Do you wish to attempt to use the malloc that comes with $package?"
. ./myread
usemymalloc="$ans"
case "$ans" in
y*) mallocsrc='malloc.c'
    mallocobj='malloc.o'
    d_mymalloc="$define"
    ;;
*) mallocsrc=''
   mallocobj=''
   d_mymalloc="$undef"
   ;;
esac

: compute the type returned by malloc
echo " "
case "$malloctype" in
'')
	if $test `./findhdr malloc.h`; then
		echo "#include <malloc.h>" > malloc.c
	fi
#include <malloc.h>
	$cat >>malloc.c <<'END'
void *malloc();
END
	if $cc $ccflags -c malloc.c >/dev/null 2>&1; then
		malloctype='void *'
	else
		malloctype='char *'
	fi
	$rm -f malloc.[co]
	;;
esac
echo "Your system wants malloc to return '$malloctype', it would seem." >&4

socketlib=''
sockethdr=''
: see whether socket exists
echo " "
$echo $n "Hmm... $c" >&4
if set socket val -f d_socket; eval $csym; $val; then
	echo "Looks like you have Berkeley networking support." >&4
	d_socket="$define"
	if set setsockopt val -f; eval $csym; $val; then
		d_oldsock="$undef"
	else
		echo "...but it uses the old 4.1c interface, rather than 4.2" >&4
		d_oldsock="$define"
	fi
else
	if $contains socklib libc.list >/dev/null 2>&1; then
		echo "Looks like you have Berkeley networking support." >&4
		d_socket="$define"
		: we will have to assume that it supports the 4.2 BSD interface
		d_oldsock="$undef"
	else
		echo "You don't have Berkeley networking in libc.a..." >&4
		if test -f /usr/lib/libnet.a; then
			( (nm $nm_opt /usr/lib/libnet.a | eval $nm_extract) ||  \
			ar t /usr/lib/libnet.a) 2>/dev/null >> libc.list
			if $contains socket libc.list >/dev/null 2>&1; then
			echo "...but the Wollongong group seems to have hacked it in." >&4
				socketlib="-lnet"
				sockethdr="-I/usr/netinclude"
				d_socket="$define"
				if $contains setsockopt libc.list >/dev/null 2>&1; then
					d_oldsock="$undef"
				else
					echo "...using the old 4.1c interface, rather than 4.2" >&4
					d_oldsock="$define"
				fi
			else
				echo "or even in libnet.a, which is peculiar." >&4
				d_socket="$undef"
				d_oldsock="$undef"
			fi
		else
			echo "or anywhere else I see." >&4
			d_socket="$undef"
			d_oldsock="$undef"
		fi
	fi
fi

: see if socketpair exists
set socketpair d_sockpair
eval $inlibc

: Locate the flags for 'open()'
echo " "
$cat >open3.c <<'EOCP'
#include <sys/types.h>
#ifdef I_FCNTL
#include <fcntl.h>
#endif
#ifdef I_SYS_FILE
#include <sys/file.h>
#endif
main() {
	if(O_RDONLY);
#ifdef O_TRUNC
	exit(0);
#else
	exit(1);
#endif
}
EOCP
: check sys/file.h first to get FREAD on Sun
if $test `./findhdr sys/file.h` && \
		$cc $cppflags "-DI_SYS_FILE" open3.c -o open3 >/dev/null 2>&1 ; then
	h_sysfile=true;
	echo "<sys/file.h> defines the O_* constants..." >&4
	if ./open3; then
		echo "and you have the 3 argument form of open()." >&4
		val="$define"
	else
		echo "but not the 3 argument form of open().  Oh, well." >&4
		val="$undef"
	fi
elif $test `./findhdr fcntl.h` && \
		$cc "-DI_FCNTL" open3.c -o open3 >/dev/null 2>&1 ; then
	h_fcntl=true;
	echo "<fcntl.h> defines the O_* constants..." >&4
	if ./open3; then
		echo "and you have the 3 argument form of open()." >&4
		val="$define"
	else
		echo "but not the 3 argument form of open().  Oh, well." >&4
		val="$undef"
	fi
else
	val="$undef"
	echo "I can't find the O_* constant definitions!  You got problems." >&4
fi
set d_open3
eval $setvar
$rm -f open3*

: see if this is a pwd system
echo " "
xxx=`./findhdr pwd.h`
if $test "$xxx"; then
	i_pwd="$define"
	echo "<pwd.h> found." >&4
	$cppstdin $cppflags $cppminus < $xxx >$$.h
	if $contains 'pw_quota' $$.h >/dev/null 2>&1; then
		d_pwquota="$define"
	else
		d_pwquota="$undef"
	fi
	if $contains 'pw_age' $$.h >/dev/null 2>&1; then
		d_pwage="$define"
	else
		d_pwage="$undef"
	fi
	if $contains 'pw_change' $$.h >/dev/null 2>&1; then
		d_pwchange="$define"
	else
		d_pwchange="$undef"
	fi
	if $contains 'pw_class' $$.h >/dev/null 2>&1; then
		d_pwclass="$define"
	else
		d_pwclass="$undef"
	fi
	if $contains 'pw_expire' $$.h >/dev/null 2>&1; then
		d_pwexpire="$define"
	else
		d_pwexpire="$undef"
	fi
	if $contains 'pw_comment' $$.h >/dev/null 2>&1; then
		d_pwcomment="$define"
	else
		d_pwcomment="$undef"
	fi
	$rm -f $$.h
else
	i_pwd="$undef"
	d_pwquota="$undef"
	d_pwage="$undef"
	d_pwchange="$undef"
	d_pwclass="$undef"
	d_pwexpire="$undef"
	d_pwcomment="$undef"
	echo "<pwd.h> NOT found." >&4
fi

: see if readdir and friends exist
set readdir d_readdir
eval $inlibc
set seekdir d_seekdir
eval $inlibc
set telldir d_telldir
eval $inlibc
set rewinddir d_rewinddir
eval $inlibc

: see if rename exists
set rename d_rename
eval $inlibc

: see if rmdir exists
set rmdir d_rmdir
eval $inlibc

: can bcopy handle overlapping blocks?
val="$undef"
case "$d_bcopy" in
"$define")
	echo " "
	echo "Checking to see if your bcopy() can do overlapping copies..." >&4
	$cat >foo.c <<'EOCP'
main()
{
char buf[128], abc[128];
char *b;
int len;
int off;
int align;
bcopy("abcdefghijklmnopqrstuvwxyz0123456789", abc, 36);

for (align = 7; align >= 0; align--) {
	for (len = 36; len; len--) {
		b = buf+align;
		bcopy(abc, b, len);
		for (off = 1; off <= len; off++) {
			bcopy(b, b+off, len);
			bcopy(b+off, b, len);
			if (bcmp(b, abc, len))
				exit(1);
		}
	}
}
exit(0);
}
EOCP
	if $cc foo.c -o safebcpy $ccflags $libs >/dev/null 2>&1 ; then
		if ./safebcpy 2>/dev/null; then
			echo "Yes, it can."
			val="$define"
		else
			echo "It can't, sorry."
		fi
	else
		echo "(I can't compile the test program, so we'll assume not...)"
	fi
	;;
esac
$rm -f foo.* safebcpy core
set d_safebcpy
eval $setvar

: can memcpy handle overlapping blocks?
val="$undef"
case "$d_memcpy" in
"$define")
	echo " "
	echo "Checking to see if your memcpy() can do overlapping copies..." >&4
	$cat >foo.c <<'EOCP'
main()
{
char buf[128], abc[128];
char *b;
int len;
int off;
int align;

memcpy(abc, "abcdefghijklmnopqrstuvwxyz0123456789", 36);

for (align = 7; align >= 0; align--) {
	for (len = 36; len; len--) {
		b = buf+align;
		memcpy(abc, b, len);
		for (off = 1; off <= len; off++) {
			memcpy(b, b+off, len);
			memcpy(b+off, b, len);
			if (memcmp(b, abc, len))
				exit(1);
		}
	}
}
exit(0);
}
EOCP
	if $cc foo.c -o safemcpy $ccflags $libs >/dev/null 2>&1 ; then
		if ./safemcpy 2>/dev/null; then
			echo "Yes, it can."
			val="$define"
		else
			echo "It can't, sorry."
		fi
	else
		echo "(I can't compile the test program, so we'll assume not...)"
	fi
	;;
esac
$rm -f foo.* safemcpy core
set d_safemcpy
eval $setvar

: see if select exists
set select d_select
eval $inlibc

: see if semctl exists
set semctl d_semctl
eval $inlibc

: see if semget exists
set semget d_semget
eval $inlibc

: see if semop exists
set semop d_semop
eval $inlibc

: see how much of the 'sem*(2)' library is present.
h_sem=true
echo " "
case "$d_semctl$d_semget$d_semop" in
*"$undef"*) h_sem=false;;
esac
: we could also check for sys/ipc.h ...
if $h_sem && $test `./findhdr sys/sem.h`; then
	echo "You have the full sem*(2) library." >&4
	val="$define"
else
	echo "You don't have the full sem*(2) library." >&4
	val="$undef"
fi
set d_sem
eval $setvar

: see if setegid exists
set setegid d_setegid
eval $inlibc

: see if seteuid exists
set seteuid d_seteuid
eval $inlibc

: see if setlocale exists
set setlocale d_setlocale
eval $inlibc
: see if setpgid exists
set setpgid d_setpgid
eval $inlibc

: see if setpgrp exists
set setpgrp d_setpgrp
eval $inlibc

: see if setpgrp2 exists
set setpgrp2 d_setpgrp2
eval $inlibc

: see if setpriority exists
set setpriority d_setprior
eval $inlibc

: see if setregid exists
set setregid d_setregid
eval $inlibc
set setresgid d_setresgid
eval $inlibc

: see if setreuid exists
set setreuid d_setreuid
eval $inlibc
set setresuid d_setresuid
eval $inlibc

: see if setrgid exists
set setrgid d_setrgid
eval $inlibc

: see if setruid exists
set setruid d_setruid
eval $inlibc

: see if setsid exists
set setsid d_setsid
eval $inlibc

: see if shmctl exists
set shmctl d_shmctl
eval $inlibc

: see if shmget exists
set shmget d_shmget
eval $inlibc

: see if shmat exists
set shmat d_shmat
eval $inlibc
: see what shmat returns
d_voidshmat="$undef"
case "$d_shmat" in
define)
    $cppstdin $cppflags $cppminus < $usrinc/sys/shm.h >voidshmat.txt 2>/dev/null
    if $contains "void.*shmat" voidshmat.txt >/dev/null 2>&1; then
	echo "and shmat returns (void*)"
	d_voidshmat="$define"
    else
	echo "and shmat returns (char*)"
    fi
    ;;
esac
: see if shmdt exists
set shmdt d_shmdt
eval $inlibc

: see how much of the 'shm*(2)' library is present.
h_shm=true
echo " "
case "$d_shmctl$d_shmget$d_shmat$d_shmdt" in
*"$undef"*) h_shm=false;;
esac
: we could also check for sys/ipc.h ...
if $h_shm && $test `./findhdr sys/shm.h`; then
	echo "You have the full shm*(2) library." >&4
	val="$define"
else
	echo "You don't have the full shm*(2) library." >&4
	val="$undef"
fi
set d_shm
eval $setvar

: see if stat knows about block sizes
echo " "
xxx=`./findhdr sys/stat.h`
if $contains 'st_blocks;' "$xxx" >/dev/null 2>&1 ; then
	if $contains 'st_blksize;' "$xxx" >/dev/null 2>&1 ; then
		echo "Your stat() knows about block sizes." >&4
		val="$define"
	else
		echo "Your stat() doesn't know about block sizes." >&4
		val="$undef"
	fi
else
	echo "Your stat() doesn't know about block sizes." >&4
	val="$undef"
fi
set d_statblks
eval $setvar

: see if stdio is really std
echo " "
xxx=`./findhdr stdio.h`
if $contains 'char.*_ptr;' "$xxx" >/dev/null 2>&1 ; then
	if $contains '_cnt;' "$xxx" >/dev/null 2>&1 ; then
		echo "Your stdio is pretty std." >&4
		val="$define"
	else
		echo "Your stdio isn't very std." >&4
		val="$undef"
	fi
else
	echo "Your stdio isn't very std." >&4
	val="$undef"
fi
set d_stdstdio
eval $setvar

: see which of string.h or strings.h is needed
echo " "
strings=`./findhdr string.h`
if $test "$strings" && $test -r "$strings"; then
	echo "Using <string.h> instead of <strings.h>." >&4
	val="$define"
else
	val="$undef"
	strings=`./findhdr strings.h`
	if $test "$strings" && $test -r "$strings"; then
		echo "Using <strings.h> instead of <string.h>." >&4
	else
		echo "No string header found -- You'll surely have problems." >&4
	fi
fi
set i_string
eval $setvar
case "$i_string" in
"$undef") strings=`./findhdr strings.h`;;
*)	  strings=`./findhdr string.h`;;
esac

: index or strchr
echo " "
if set index val -f; eval $csym; $val; then
	if set strchr val -f d_strchr; eval $csym; $val; then
		if $contains strchr "$strings" >/dev/null 2>&1 ; then
			val="$define"
			vali="$undef"
			echo "strchr() found." >&4
		else
			val="$undef"
			vali="$define"
			echo "index() found." >&4
		fi
	else
		val="$undef"
		vali="$define"
		echo "index() found." >&4
	fi
else
	if set strchr val -f d_strchr; eval $csym; $val; then
		val="$define"
		vali="$undef"
		echo "strchr() found." >&4
	else
		echo "No index() or strchr() found!" >&4
		val="$undef"
		vali="$undef"
	fi
fi
set d_strchr; eval $setvar
val="$vali"
set d_index; eval $setvar

: check for structure copying
echo " "
echo "Checking to see if your C compiler can copy structs..." >&4
$cat >try.c <<'EOCP'
main()
{
	struct blurfl {
		int dyick;
	} foo, bar;

	foo = bar;
}
EOCP
if $cc -c try.c >/dev/null 2>&1 ; then
	val="$define"
	echo "Yup, it can."
else
	val="$undef"
	echo "Nope, it can't."
fi
set d_strctcpy
eval $setvar
$rm -f try.*

: see if strerror and/or sys_errlist[] exist
echo " "
if set strerror val -f d_strerror; eval $csym; $val; then
	echo 'strerror() found.' >&4
	d_strerror="$define"
	d_strerrm="$undef"
	if set sys_errlist val -a d_syserrlst; eval $csym; $val; then	
		echo "(You also have sys_errlist[], so we could roll our own strerror.)" 
		d_syserrlst="$define"
	else
	echo "(Since you don't have sys_errlist[], sterror() is welcome.)"
		d_syserrlst="$undef"
	fi
elif xxx=`./findhdr string.h`; test "$xxx" || xxx=`./findhdr strings.h`; \
	$contains '#[ 	]*define.*strerror' "$xxx" >/dev/null 2>&1; then
	echo 'strerror() found in string header.' >&4
	d_strerror="$define"
	d_strerrm="$undef"
	if set sys_errlist val -a d_syserrlst; eval $csym; $val; then	
		echo "(Most probably, strerror() uses sys_errlist[] for descriptions.)"
		d_syserrlst="$define"
	else
		echo "(You don't appear to have any sys_errlist[], how can this be?)"
		d_syserrlst="$undef"
	fi
elif set sys_errlist val -a d_syserrlst; eval $csym; $val; then
echo "strerror() not found, but you have sys_errlist[] so we'll use that." >&4
	d_strerror="$undef"
	d_syserrlst="$define"
	d_strerrm="$define"
else
	echo 'strerror() and sys_errlist[] NOT found.' >&4
	d_strerror="$undef"
	d_syserrlst="$undef"
	d_strerrm="$undef"
fi

: see if symlink exists
set symlink d_symlink
eval $inlibc

: see if syscall exists
set syscall d_syscall
eval $inlibc

: see if system exists
set system d_system
eval $inlibc

: see if times exists
echo " "
if set times val -f d_times; eval $csym; $val; then
	echo 'times() found.' >&4
	d_times="$define"
	case "$clocktype" in
	'')
		if $contains 'clock_t;' `./findhdr sys/types.h` >/dev/null 2>&1 ; then
			dflt='clock_t';
		elif $contains 'clock_t;' `./findhdr sys/times.h` >/dev/null 2>&1; then
			dflt='clock_t';
		else
			dflt='long';
		fi
		;;
	*)  dflt="$clocktype"
		;;
	esac
	echo " "
	rp="What type is returned by times() on this sytem?"
	. ./myread
	clocktype="$ans"
else
	echo 'times() not found, hope that will do.' >&4
	d_times="$undef"
	clocktype='int'
fi

: see if truncate exists
set truncate d_truncate
eval $inlibc

: see if we have to deal with yellow pages, now NIS.
if $test -d /usr/etc/yp || $test -d /etc/yp; then
	if $test -f /usr/etc/nibindd; then
		echo " "
		echo "I'm fairly confident you're on a NeXT."
		echo " "
		rp='Do you get the hosts file via NetInfo?'
		dflt=y
		case "$hostcat" in
		nidump*) ;;
		'') ;;
		*) dflt=n;;
		esac
		. ./myread
		case "$ans" in
		y*) hostcat='nidump hosts .';;
		*) hostcat='cat /etc/hosts';;
		esac
	fi
	case "$hostcat" in
	nidump*) ;;
	*)
		case "$hostcat" in
		*ypcat*) dflt=y;;
		'') if $contains '^\+' /etc/passwd >/dev/null 2>&1; then
				dflt=y
			else
				dflt=n
			fi;;
		*) dflt=n;;
		esac
		echo " "
		rp='Are you getting the hosts file via yellow pages?'
		. ./myread
		case "$ans" in
		y*) hostcat='ypcat hosts';;
		*) hostcat='cat /etc/hosts';;
		esac
		;;
	esac
fi

: now get the host name
echo " "
echo "Figuring out host name..." >&4
case "$myhostname" in
'') cont=true
	echo 'Maybe "hostname" will work...'
	if tans=`sh -c hostname 2>&1` ; then
		myhostname=$tans
		phostname=hostname
		cont=''
	fi
	;;
*) cont='';;
esac
if $test "$cont"; then
	if xenix; then
		echo 'Oh, dear.  Maybe "/etc/systemid" is the key...'
		if tans=`cat /etc/systemid 2>&1` ; then
			myhostname=$tans
			phostname='cat /etc/systemid'
			echo "Whadyaknow.  Xenix always was a bit strange..."
			cont=''
		fi
	elif $test -r /etc/systemid; then
		echo "(What is a non-Xenix system doing with /etc/systemid?)"
	fi
fi
if $test "$cont"; then
	echo 'No, maybe "uuname -l" will work...'
	if tans=`sh -c 'uuname -l' 2>&1` ; then
		myhostname=$tans
		phostname='uuname -l'
	else
		echo 'Strange.  Maybe "uname -n" will work...'
		if tans=`sh -c 'uname -n' 2>&1` ; then
			myhostname=$tans
			phostname='uname -n'
		else
			echo 'Oh well, maybe I can mine it out of whoami.h...'
			if tans=`sh -c $contains' sysname $usrinc/whoami.h' 2>&1` ; then
				myhostname=`echo "$tans" | $sed 's/^.*"\(.*\)"/\1/'`
				phostname="sed -n -e '"'/sysname/s/^.*\"\\(.*\\)\"/\1/{'"' -e p -e q -e '}' <$usrinc/whoami.h"
			else
				case "$myhostname" in
				'') echo "Does this machine have an identity crisis or something?"
					phostname='';;
				*)
					echo "Well, you said $myhostname before..."
					phostname='echo $myhostname';;
				esac
			fi
		fi
	fi
fi
: you do not want to know about this
set $myhostname
myhostname=$1

: translate upper to lower if necessary
case "$myhostname" in
*[A-Z]*)
	myhostname=`echo $myhostname | tr '[A-Z]' '[a-z]'`
	echo "(Normalizing case in your host name)"
	;;
esac

: verify guess
if $test "$myhostname" ; then
	dflt=y
	rp='Your host name appears to be "'$myhostname'".'" Right?"
	. ./myread
	case "$ans" in
	y*) ;;
	*) myhostname='';;
	esac
fi

: bad guess or no guess
while $test "X$myhostname" = X ; do
	dflt=''
	rp="Please type the (one word) name of your host:"
	. ./myread
	myhostname="$ans"
done

: a little sanity check here
case "$phostname" in
'') ;;
*)
	case `$phostname` in
	$myhostname$mydomain|$myhostname) ;;
	*)
		case "$phostname" in
		sed*)
			echo "(That doesn't agree with your whoami.h file, by the way.)"
			;;
		*)
			echo "(That doesn't agree with your $phostname command, by the way.)"
			;;
		esac
	;;
	esac
	;;
esac

: see how we will look up host name
echo " "
if false; then
	: dummy stub to allow use of elif
elif set uname val -f d_uname; eval $csym; $val; then
	if xenix; then
		$cat <<'EOM'
uname() was found, but you're running xenix, and older versions of xenix
have a broken uname(). If you don't really know whether your xenix is old
enough to have a broken system call, use the default answer.

EOM
		dflt=y
		case "$d_uname" in
		"$define") dflt=n;;
		esac
		rp='Is your uname() broken?'
		. ./myread
		case "$ans" in
		n*) d_uname="$define"; call=uname;;
		esac
	else
		echo 'uname() found.' >&4
		d_uname="$define"
		call=uname
	fi
fi
case "$d_gethname" in
'') d_gethname="$undef";;
esac
case "$d_uname" in
'') d_uname="$undef";;
esac
case "$d_phostname" in
'') d_phostname="$undef";;
esac

: see if there is a vfork
set vfork d_vfork
eval $inlibc
: But do we want to use it.  vfork is reportedly unreliable in 
: perl in Solaris 2.x, and probably elsewhere.
case "$d_vfork" in
define)
    dflt='n'
    rp="Some systems have problems with vork.  Do you want to use it?"
    . ./myread
    case "$ans" in
    y|Y) ;;
    *) echo "Ok, we won't use vfork."
       d_vfork="$undef"
       ;;
    esac
    ;;
esac
: see if signal is declared as pointer to function returning int or void
echo " "
xxx=`./findhdr signal.h`
$test "$xxx" && $cppstdin $cppminus $cppflags < $xxx >$$.tmp 2>/dev/null
if $contains 'int.*\*[ 	]*signal' $$.tmp >/dev/null 2>&1 ; then
	echo "You have int (*signal())() instead of void." >&4
	val="$undef"
	signal_t="int"
elif $contains 'void.*\*[ 	]*signal' $$.tmp >/dev/null 2>&1 ; then
	echo "You have void (*signal())() instead of int." >&4
	val="$define"
	signal_t="void"
elif $contains 'extern[ 	]*[(\*]*signal' $$.tmp >/dev/null 2>&1 ; then
	echo "You have int (*signal())() instead of void." >&4
	val="$undef"
	signal_t="int"
else
	case "$d_voidsig" in
	'')
	echo "I can't determine whether signal handler returns void or int..." >&4
		dflt=void
		rp="What type does your signal handler returns?"
		. ./myread
		case "$ans" in
		void) val="$define"; signal_t="void";;
		*) val="$undef"; signal_t="int";;
		esac;;
	*) echo "As you already told me, signal handler returns $signal_t." >&4;;
	esac
fi
set d_voidsig
eval $setvar
$rm -f $$.tmp

: check for volatile keyword
echo " "
echo 'Checking to see if your C compiler knows about "volatile"...' >&4
$cat >try.c <<'EOCP'
main()
{
	typedef struct _goo_struct goo_struct;
	goo_struct * volatile goo = ((goo_struct *)0);
	struct _goo_struct {
		long long_int;
		int reg_int;
		char char_var;
	};
	typedef unsigned short foo_t;
	char *volatile foo;
	volatile int bar;
	volatile foo_t blech;
	foo = foo;
}
EOCP
if $cc -c $ccflags try.c >/dev/null 2>&1 ; then
	val="$define"
	echo "Yup, it does."
else
	val="$undef"
	echo "Nope, it doesn't."
fi
set d_volatile
eval $setvar
$rm -f try.*

: see if there is a wait4
set wait4 d_wait4
eval $inlibc

: see if waitpid exists
set waitpid d_waitpid
eval $inlibc

: preserve RCS keywords in files with variable substitution, grrr
Date='$Date'
Id='$Id'
Log='$Log'
RCSfile='$RCSfile'
Revision='$Revision'

: 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

: determine where public executables go
echo " "
case "$bin" in
'')
	dflt=`./loc . /bin /usr/local/bin /usr/lbin /usr/local /usr/bin`
	;;
*)
	dflt="$bin"
	;;
esac
fn=d~
rp='Pathname where the public executables will reside?'
. ./getfile
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

: check for ordering of bytes in a long
case "$byteorder" in
'')
	$cat <<'EOM'
  
In the following, larger digits indicate more significance.  A big-endian
machine like a Pyramid or a Motorola 680?0 chip will come out to 4321. A
little-endian machine like a Vax or an Intel 80?86 chip would be 1234. Other
machines may have weird orders like 3412.  A Cray will report 87654321. If
the test program works the default is probably right.
I'm now running the test program...
EOM
	$cat >try.c <<'EOCP'
#include <stdio.h>
main()
{
	int i;
	union {
		unsigned long l;
		char c[sizeof(long)];
	} u;

	if (sizeof(long) > 4)
		u.l = (0x08070605L << 32) | 0x04030201L;
	else
		u.l = 0x04030201L;
	for (i = 0; i < sizeof(long); i++)
		printf("%c", u.c[i]+'0');
	printf("\n");
}
EOCP
	if $cc $ccflags try.c -o try >/dev/null 2>&1 ; then
		dflt=`./try`
		case "$dflt" in
		????|????????) echo "(The test program ran ok.)";;
		*) echo "(The test program didn't run right for some reason.)";;
		esac
	else
		dflt='4321'
		cat <<'EOM'
(I can't seem to compile the test program.  Guessing big-endian...)
EOM
	fi
	;;
*)
	echo " "
	dflt="$byteorder"
	;;
esac
rp="What is the order of bytes in a long?"
. ./myread
byteorder="$ans"
$rm -f try.c try

: see if dlfcn is available
set dlfcn.h i_dlfcn
eval $inhdr
: determine which dynamic loading, if any, to compile in
echo " "
case "$usedl" in
'') case "$i_dlfcn" in
    define) dflt='y' ;;
    *)      dflt='n' ;;
    esac
    : Does a dl.c file exist for this operating system
    $test -f ../ext/dl/dl_${osname}.c && dflt='y'
    ;;
define|y|true) dflt='y'
    usedl="$define"
    ;;
*)  dflt='n'
    ;;
esac
rp="Do you wish to attempt to use dynamic loading?"
. ./myread
usedl="$ans"
case "$ans" in
y*) usedl="$define"
    if $test -f ../ext/dl/dl_${osname}.c ; then
	dflt="ext/dl/dl_${osname}.c"
    else
	dflt='ext/dl/dl.c'
    fi
    echo "The following dynamic loading files are available:"
    cd ..; ls -C ext/dl/dl*.c; cd UU
    rp="Source file to use for dynamic loading"
    fn="fne~"
    . ./getfile
    : emulate  basename and dirname
    xxx=`echo $ans | $sed -e 's@.*/\([^/]*\)$@\1@' -e 's@\.c$@@'`
    dlobj=$xxx.o
    dlsrc=$xxx.c
    dldir=`echo $ans | $sed 's@\(.*\)/[^/]*$@\1@'`
    case "$dldir" in
    '') dldir="." ;;
    *) ;;
    esac
    if $test -f ../$dldir/$dlsrc; then
        usedl="$define"
    else
	echo "File $dlsrc does not exist -- ignored"
	usedl="$undef"
    fi

    cat << EOM

Some systems may require passing special flags to $cc -c to
compile modules that will be used to create a shared library.
To use no flags, say "none".
EOM
    case "$cccdlflags" in
    ''|' ') case "$osname" in
			hpux)  dflt='+z' ;;
			next)  dflt='none' ;;
			sunos) dflt='none' ;;
	        *)     dflt='none' ;;
			esac
			;;
    *) dflt="$cccdlflags" ;;
    esac
    rp="Any special flags to pass to $cc -c to compile shared library modules?"
    . ./myread
    case "$ans" in
    none) cccdlflags='' ;;
    *) cccdlflags="$ans" ;;
    esac

    cat << 'EOM'

Some systems may require passing special flags to ld to
create a shared library.  To use no flags, say "none".
EOM
    case "$lddlflags" in
    ''|' ') case "$osname" in
			hpux)  dflt='-b' ;;
			next)  dflt='none' ;;
			sunos) dflt='none' ;;
	        *)     dflt='none' ;;
			esac
			;;
    *) dflt="$lddlflags" ;;
    esac
    rp="Any special flags to pass to ld to create a shared library?"
    . ./myread
    case "$ans" in
    none) lddlflags='' ;;
    *) lddlflags="$ans" ;;
    esac

	cat <<EOM

Some systems may require passing special flags to $cc to indicate that
dynamic linking will be used.  To use no flags, say "none".
EOM
    case "$ccdlflags" in
    ''|' ')
		case "$osname" in
		hpux)  dflt='none' ;;
		next)  dflt='none' ;;
		sunos) dflt='none' ;;
	    *)     dflt='none' ;;
		esac
		;;
    *)  dflt="$ccdlflags"
	    ;;
    esac
    rp="Any special flags to pass to $cc to use dynamic loading?"
    . ./myread
    case "$ans" in
    none) ccdlflags='' ;;
    *) ccdlflags="$ans" ;;
    esac
	cat <<EOM

Some systems may require using a special suffix for shared libraries.
To create the shared library for POSIX, for example, you may need to
actually build the file POSIX.so.

EOM
    case "$shlibsuffix" in
	'')
		case "$osname" in
		hpux)  dflt='.sl' ;;
		next)  dflt='.so' ;;
		sunos) dflt='.so' ;;
		*)     dflt='.so' ;;
		esac
		;;
    *)  dflt="$shlibsuffix"
	;;
    esac
    rp="What is the suffix used for shared libraries?"
    . ./myread
    case "$ans" in
    none) shlibsuffix='' ;;
    *) shlibsuffix="$ans" ;;
    esac
    ;;
*)  usedl="$undef"
    : These are currently not used.
    dlsrc=''
    dlobj=''
    dldir=''
    lddlflags=''
    ccdlflags=''
    shlibsuffix='.o'
    ;;
esac
: see if we have the old dbm
set dbm.h i_dbm
eval $inhdr

: see if ndbm.h is available
set ndbm.h i_ndbm
eval $inhdr

: see if gdbm.h is available
set gdbm.h i_gdbm
eval $inhdr

: see if sdbm.h is wanted
echo " "
echo "$package includes an implementation of sdbm in ext/dbm/sdbm."
case "$i_sdbm" in
    ''|' ') val="$define" ;;
    *) val="$i_sdbm" ;;
esac
set i_sdbm
eval $setvar
case "$extensions" in
' '|'') echo "Looking for extensions..."
	case "$find" in
		*find*) 
		cd ..
		extensions=`$find ext -type f -name \*.xs -print`
		set X $extensions
		shift
		extensions="$*"
		cd UU
		;;
	*)	extensions='ext/dbm/NDBM_File.xs ext/dbm/ODBM_File.xs ext/dbm/GDBM_File.xs ext/dbm/SDBM_File.xs ext/posix/POSIX.xs'
		;;
	esac
	;;
none)	extensions='' ;;
*)	;;
esac
: Now see which are supported on this system.
dflt=""
for xxx in $extensions ; do
    case "$xxx" in
    *ODBM*) case "$i_dbm" in 
	    define) dflt="$dflt $xxx" ;;
	    *) ;;
	    esac
	    ;;
    *NDBM*) case "$i_ndbm" in 
	    define) dflt="$dflt $xxx" ;;
	    *) ;;
	    esac
	    ;;
    *GDBM*) case "$i_gdbm" in 
	    define) dflt="$dflt $xxx" ;;
	    *) ;;
	    esac
	    ;;
    *SDBM*) case "$i_sdbm" in 
	    define) dflt="$dflt $xxx" ;;
	    *) ;;
	    esac
	    ;;
    *)      dflt="$dflt $xxx"
	    ;;
    esac
done

rp="What extensions do you wish to include?"
. ./myread
extensions="$ans"

: see what type gids are declared as in the kernel
case "$gidtype" in
'')
	if $contains 'gid_t;' `./findhdr sys/types.h` >/dev/null 2>&1 ; then
		dflt='gid_t';
	else
		xxx=`./findhdr sys/user.h`
		set `grep 'groups\[NGROUPS\];' "$xxx" 2>/dev/null` unsigned short
		case $1 in
		unsigned) dflt="$1 $2" ;;
		*) dflt="$1" ;;
		esac
	fi
	;;
*)  dflt="$gidtype";;
esac
echo " "
rp="What is the type for group ids returned by getgid()?"
. ./myread
val="$ans"
set gidtype
eval $setvar
: see if getgroups exists
set getgroups d_getgrps
eval $inlibc

case "$d_getgrps" in
'define')
    case "$groupstype" in
	'') dflt="$gidtype" ;;
	*)  dflt="$groupstype" ;;
    esac
    echo " "
    $cat <<EOM
What is the type of the second argument to getgroups()?  Usually this
is the same as group ids, $gidtype, but not always.
EOM
    rp="What type is the second arguement to getgroups()?"
    . ./myread
    val="$ans"
    ;;
*)  val="$gidtype";;
esac
set groupstype
eval $setvar
: determine where private executables go
case "$privlib" in
'')
	dflt=/usr/lib/$package
	$test -d /usr/local/lib && dflt=/usr/local/lib/$package
	$test -d /local/lib && dflt=/local/lib/$package
	;;
*)  dflt="$privlib"
	;;
esac
$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 private library files will reside?'
. ./getfile
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

: determine where public libraries go
case "$lib" in
'') dflt=`./loc . "." /usr/local/lib /usr/lib /lib`;;
*)  dflt="$lib";;
esac
echo " "
fn=d~
rp='Where do you want to put the public libraries?'
. ./getfile
lib="$ans"
libexp="$ansexp"

: determine whether symbolic links are supported
$touch blurfl
if $ln -s blurfl sym > /dev/null 2>&1 ; then
    lns="$ln -s"
else
    lns="$ln"
fi
rm -f blurfl sym
: see what type lseek is declared as in the kernel
case "$lseektype" in
'')
	if $contains 'off_t;' `./findhdr sys/types.h` >/dev/null 2>&1 ; then
		dflt='off_t';
	else
		dflt='long';
	fi
	;;
*)  dflt="$lseektype"
	;;
esac
echo " "
rp="What type is lseek's offset on this system declared as?"
. ./myread
lseektype="$ans"

: determine where manual pages go
$cat <<EOM

$package has manual pages available in source form.
EOM
case "$_nroff" in
nroff)
	echo "However, you don't have nroff, so they're probably useless to you."
	case "$mansrc" in
	'') mansrc="none";;
	esac;;
esac
echo "If you don't want the manual sources installed, answer 'none'."
case "$mansrc" in
'')
	lookpath='/usr/local/man/man1 /usr/local/man/man1 /usr/man/manl'
	lookpath="$lookpath /usr/man/local/man1 /usr/man/l_man/man1"
	lookpath="$lookpath /usr/local/man/u_man/man1 /usr/local/man/l_man/man1"
	lookpath="$lookpath /usr/man/man.L"
	mansrc=`./loc . $lookpath`
	if $test -d "$mansrc"; then
		dflt="$mansrc"
	else
		dflt="$sysman"
	fi
	;;
*)  dflt="$mansrc"
	;;
esac
echo " "
fn=dn~
rp='Where do the manual pages (source) go?'
. ./getfile
mansrc="$ans"
mansrcexp="$ansexp"
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 "$installmansrc" in
	'') dflt=`echo $mansrcexp | sed 's#^/afs/#/afs/.#'`;;
	*) dflt="$installmansrc";;
	esac
	fn=de~
	rp='Where will man pages be installed?'
	. ./getfile
	installmansrc="$ans"
else
	installmansrc="$mansrcexp"
fi


case "$mansrc" in
'') manext='0';;
*l) manext=l;;
*n) manext=n;;
*o) manext=l;;
*p) manext=n;;
*C) manext=C;;
*L) manext=L;;
*L1) manext=L1;;
*) manext=1;;
esac

: check for alignment requirements
echo " "
case "$memalignbytes" in
'') echo "Checking alignment constraints..." >&4
	$cat >try.c <<'EOCP'
struct foobar {
	char foo;
	double bar;
} try;
main()
{
	printf("%d\n", (char *)&try.bar - (char *)&try.foo);
}
EOCP
	if $cc $ccflags try.c -o try >/dev/null 2>&1; then
		dflt=`./try`
	else
		dflt='8'
		echo"(I can't seem to compile the test program...)"
	fi
	;;
*) dflt="$memalignbytes"
	;;
esac
rp="Doubles must be aligned on a how-many-byte boundary?"
. ./myread
memalignbytes="$ans"
$rm -f try.c try

: Cruising for prototypes
echo " "
echo "Checking out function prototypes..." >&4
$cat >prototype.c <<'EOCP'
main(int argc, char *argv[]) {
	exit(0);}
EOCP
if $cc -c prototype.c >prototype.out 2>&1 ; then
	echo "Your C compiler appears to support function prototypes."
	val="$define"
else
	echo "Your C compiler doesn't seem to understand function prototypes."
	val="$undef"
fi
set prototype
eval $setvar
$rm -f prototype*

: check for length of pointer
echo " "
case "$ptrsize" in
'')
	echo "Checking to see how big your pointers are..." >&4
	$cat >try.c <<'EOCP'
#include <stdio.h>
main()
{
	printf("%d\n", sizeof(char *));
}
EOCP
	if $cc $ccflags try.c -o try >/dev/null 2>&1 ; then
		dflt=`./try`
	else
		dflt='4'
		echo "(I can't seem to compile the test program.  Guessing...)"
	fi
	;;
*)
	dflt="$ptrsize"
	;;
esac
rp="What is the size of a pointer (in bytes)?"
. ./myread
ptrsize="$ans"
$rm -f try.c try

: check for size of random number generator
echo " "
case "$randbits" in
'')
	echo "Checking to see how many bits your rand function produces..." >&4
	$cat >try.c <<'EOCP'
#include <stdio.h>
main()
{
	register int i;
	register unsigned long tmp;
	register unsigned long max = 0L;

	for (i = 1000; i; i--) {
		tmp = (unsigned long)rand();
		if (tmp > max) max = tmp;
	}
	for (i = 0; max; i++)
		max /= 2;
	printf("%d\n",i);
}
EOCP
	if $cc try.c -o try >/dev/null 2>&1 ; then
		dflt=`try`
	else
		dflt='?'
		echo "(I can't seem to compile the test program...)"
	fi
	;;
*)
	dflt="$randbits"
	;;
esac
rp='How many bits does your rand() function produce?'
. ./myread
randbits="$ans"
$rm -f try.c try

: see if ar generates random libraries by itself
echo " "
echo "Checking how to generate random libraries on your machine..." >&4
$cat >a.c <<EOP
f() { exit(0); }
EOP
cc -c a.c >/dev/null 2>&1
ar rc ran.a a.o >/dev/null 2>&1
$cat >b.c <<EOP
main() { f(); }
EOP
cp ran.a lib.a
if ar ts ran.a >/dev/null 2>&1; then
	if $cc -o b b.c lib.a >/dev/null 2>&1; then
		echo "ar appears to generate random libraries itself."
		orderlib=false
		ranlib=":"
	else
		echo "a table of contents needs to be added with 'ar ts'."
		orderlib=false
		ranlib="ar ts"
	fi
else
	if $test -f /usr/bin/ranlib; then
		ranlib=/usr/bin/ranlib
	elif $test -f /bin/ranlib; then
		ranlib=/bin/ranlib
	fi

	if $test -n "$ranlib"; then
		echo "your system has $ranlib; we'll use that."
		orderlib=false
	else
		echo "your system doesn't seem to support random libraries"
		echo "so we'll use lorder and tsort to order the libraries."
		orderlib=true
		ranlib=":"
	fi
fi
$rm -f a.* b.c b.o b ran.a lib.a

: determine where public executables go
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
	$test -d /usr/local/script && dflt=/usr/local/script
	;;
*)  dflt="$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
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

: generate list of signal names
echo " "
case "$sig_name" in
'')
	echo "Generating a list of signal names..." >&4
	xxx=`./findhdr signal.h`" "`./findhdr sys/signal.h`
	set X `cat $xxx 2>&1 | $awk '
$1 ~ /^#define$/ && $2 ~ /^SIG[A-Z0-9]*$/ && $3 ~ /^[1-9][0-9]*$/ {
	sig[$3] = substr($2,4,20)
	if (max < $3 && $3 < 60) {
		max = $3
	}
}

END {
	for (i = 1; i <= max; i++) {
		if (sig[i] == "")
			printf "%d", i
		else
			printf "%s", sig[i]
		if (i < max)
			printf " "
	}
	printf "\n"
}
'`
	shift
	case $# in
	0)
		echo 'kill -l' >/tmp/foo$$
		set X `csh -f </tmp/foo$$`
		$rm -f /tmp/foo$$
		shift
		case $# in
		0)set HUP INT QUIT ILL TRAP IOT EMT FPE KILL BUS SEGV SYS PIPE ALRM TERM
		;;
		esac
		;;
	esac
	sig_name="ZERO $*"
	;;
esac
echo "The following signals are available:"
echo $sig_name | 
    $awk 'BEGIN { linelen = 0 }
	 { for (i = 1; i < NF; i++)
	   {
	      name = "SIG" $i " "
	      linelen = linelen + length(name)
	      if (linelen > 70)
		{
		  printf "\n"
		  linelen = length(name)
		}
	      printf "%s", name } }'
: see what type of char stdio uses.
echo " "
if $contains 'unsigned.*char.*_ptr;' `./findhdr stdio.h` >/dev/null 2>&1 ; then
	echo "Your stdio uses unsigned chars." >&4
	stdchar="unsigned char"
else
	echo "Your stdio uses signed chars." >&4
	stdchar="char"
fi

: see if time exists
echo " "
if set time val -f d_time; eval $csym; $val; then
	echo 'time() found.' >&4
	val="$define"
	case "$timetype" in
	'')
		if $contains 'time_t;' `./findhdr sys/types.h` >/dev/null 2>&1 ; then
			dflt='time_t';
		else
			dflt='long';
		fi
		;;
	*)  dflt="$timetype"
		;;
	esac
	echo " "
	rp="What type is returned by time() on this sytem?"
	. ./myread
	timetype="$ans"
else
	echo 'time() not found, hope that will do.' >&4
	val="$undef"
	timetype='int';
fi
set d_time
eval $setvar

: see what type uids are declared as in the kernel
case "$uidtype" in
'')
	if $contains 'uid_t;' `./findhdr sys/types.h` >/dev/null 2>&1 ; then
		dflt='uid_t';
	else
		xxx=`./findhdr sys/user.h`
		set `grep '_ruid;' "$xxx" 2>/dev/null` unsigned short
		case $1 in
		unsigned) dflt="$1 $2" ;;
		*) dflt="$1" ;;
		esac
	fi
	;;
*)  dflt="$uidtype";;
esac
echo " "
rp="What type are user ids on this system declared as?"
. ./myread
uidtype="$ans"

: check for void type
echo " "
$cat >&4 <<EOM
Checking to see how well your C compiler groks the void type...

  Support flag bits are:
    1: basic void declarations.
    2: arrays of pointers to functions returning void.
    4: operations between pointers to and addresses of void functions.
    8: generic void pointers.

EOM
case "$voidflags" in
'')
	$cat >try.c <<'EOCP'
#if TRY & 1
void main() {
#else
main() {
#endif
	extern void moo();	/* function returning void */
	void (*goo)();		/* ptr to func returning void */
#if TRY & 8
	void *hue;		/* generic ptr */
#endif
#if TRY & 2
	void (*foo[10])();
#endif

#if TRY & 4
	if(goo == moo) {
		exit(0);
	}
#endif
	exit(0);
}
EOCP
	if $cc -c -DTRY=$defvoidused try.c >.out 2>&1 ; then
		voidflags=$defvoidused
	echo "It appears to support void to the level $package wants ($defvoidused)."
		if $contains warning .out >/dev/null 2>&1; then
			echo "However, you might get some warnings that look like this:"
			$cat .out
		fi
	else
echo "Hmm, your compiler has some difficulty with void. Checking further..." >&4
		if $cc -c -DTRY=1 try.c >/dev/null 2>&1 ; then
			echo "It supports 1..."
			if $cc -c -DTRY=3 try.c >/dev/null 2>&1 ; then
				echo "It also supports 2..."
				if $cc -c -DTRY=7 try.c >/dev/null 2>&1 ; then
					voidflags=7
					echo "And it supports 4 but not 8 definitely."
				else
					echo "It doesn't support 4..."
					if $cc -c -DTRY=11 try.c >/dev/null 2>&1 ; then
						voidflags=11
						echo "But it supports 8."
					else
						voidflags=3
						echo "Neither does it support 8."
					fi
				fi
			else
				echo "It does not support 2..."
				if $cc -c -DTRY=13 try.c >/dev/null 2>&1 ; then
					voidflags=13
					echo "But it supports 4 and 8."
				else
					if $cc -c -DTRY=5 try.c >/dev/null 2>&1 ; then
						voidflags=5
						echo "And it supports 4 but has not heard about 8."
					else
						echo "However it supports 8 but not 4."
					fi
				fi
			fi
		else
			echo "There is no support at all for void."
			voidflags=0
		fi
	fi
esac
dflt="$voidflags";
rp="Your void support flags add up to what?"
. ./myread
voidflags="$ans"
$rm -f try.* .out

: determine compiler compiler
case "$yacc" in
'')
	dflt=yacc;;
*)
	dflt="$yacc";;
esac
echo " "
rp="yacc"
if $test -f "$byacc"; then
	dflt="$byacc"
	rp="byacc or $rp"
fi
if $test -f "$bison"; then
	rp="$rp or bison -y"
fi
$cat <<EOM
$package no longer requires a compiler compiler, so the following is optional.
EOM
rp="Which compiler compiler ($rp) shall I use?"
. ./myread
yacc="$ans"
case "$yacc" in
*bis*)
	case "$yacc" in
	*-y*) ;;
	*)
		yacc="$yacc -y"
		echo "(Adding -y option to bison to get yacc-compatible behaviour.)"
		;;
	esac
	;;
esac

: see if this is a sys/file.h system
val=''
set sys/file.h val
eval $inhdr

: do we need to #include <sys/file.h> ?
case "$val" in
"$define")
	echo " "
	if $h_sysfile; then
		val="$define"
		echo "We'll be including <sys/file.h>." >&4
	else
		val="$undef"
		echo "We won't be including <sys/file.h>." >&4
	fi
	;;
*)
	h_sysfile=false
	;;
esac
set i_sysfile
eval $setvar

: see if fcntl.h is there
val=''
set fcntl.h val
eval $inhdr

: see if we can include fcntl.h
case "$val" in
"$define")
	echo " "
	if $h_fcntl; then
		val="$define"
		echo "We'll be including <fcntl.h>." >&4
	else
		val="$undef"
		if $h_sysfile; then
	echo "We don't need to include <fcntl.h> if we include <sys/file.h>." >&4
		else
			echo "We won't be including <fcntl.h>." >&4
		fi
	fi
	;;
*)
	h_fcntl=false
	val="$undef"
	;;
esac
set i_fcntl
eval $setvar

: see if this is an grp system
set grp.h i_grp
eval $inhdr

: see if memory.h is available.
set memory.h i_memory
eval $inhdr
: See if it conflicts with string.h
case "$i_memory" in
define)
    case "$strings" in
    '') ;;
    *)  $cppstdin $cppflags $cppminus < $strings > mem.h
	if $contains 'memcpy' mem.h >/dev/null 2>&1; then
	    echo "We won't be including <memory.h>"
	    i_memory="$undef"
	fi
	rm -f mem.h
	;;
    esac
esac
: see if there are directory access routines out there
echo " "
if $test `./findhdr ndir.h` && \
	  ( $test -r /usr/lib/libndir.a || $test -r /usr/local/lib/libndir.a ); then
	echo "Ndir library found." >&4
	if $test -r /usr/lib/libndir.a; then
		ndirlib='-lndir'
	else
		ndirlib="/usr/local/lib/libndir.a"
	fi
	i_ndir="$define"
	d_usendir="$undef"
	ndirc=''
	ndiro=''
else
	ndirlib=''
	i_ndir="$undef"
	if set readdir val -f; eval $csym; $val; then
	echo "No ndir library found, but you have readdir() so we'll use that." >&4
		d_usendir="$undef"
		ndirc=''
		ndiro=''
	else
		echo "No ndir library found--using ./ndir.c." >&4
		d_usendir="$define"
		ndirc='ndir.c'
		ndiro='ndir.o'
	fi
fi

: see if net/errno.h is available
set net/errno.h i_neterrno
eval $inhdr
: Unfortunately, it causes problems on some systems.  Arrgh.
case '$i_neterrno' in
'define') echo "<net/errno.h> found."
    cat > try.c <<'EOM'
#include <stdio.h>
#include <errno.h>
#include <net/errno.h>
int func()
{
int x;
x = ENOTSOCK;
return x;
}
EOM
    if $cc $ccflags -c try.c >/dev/null 2>&1; then
	i_neterrno="$define"
    else
	echo "But it causes problems, so we won't include it"
	i_neterrno="$undef"
    fi
    $rm -f try.* try
    ;;
esac
: see if stdarg is available
set stdarg.h i_stdarg
eval $inhdr

: see if stddef is available
set stddef.h i_stddef
eval $inhdr

: see if this is an sysdir system
set sys/dir.h i_sysdir
eval $inhdr

: get C preprocessor symbols handy
echo " "
echo $attrlist | $tr ' ' '\012' >Cppsym.know
$cat <<EOSS >Cppsym
$startsh
case "\$1" in
-l) list=true
	shift
	;;
esac
unknown=''
case "\$list\$#" in
1|2)
	for sym do
		if $contains "^\$1$" Cppsym.true >/dev/null 2>&1; then
			exit 0
		elif $contains "^\$1$" Cppsym.know >/dev/null 2>&1; then
			:
		else
			unknown="\$unknown \$sym"
		fi
	done
	set X \$unknown
	shift
	;;
esac
case \$# in
0) exit 1;;
esac
echo \$* | $tr ' ' '\012' | $sed -e 's/\(.*\)/\\
#ifdef \1\\
exit 0; _ _ _ _\1\\	 \1\\
#endif\\
/' >Cppsym\$\$
echo "exit 1; _ _ _" >>Cppsym\$\$
$cppstdin $cppminus <Cppsym\$\$ | $grep '^exit [01]; _ _'  >Cppsym2\$\$
case "\$list" in
true) $awk 'NF > 5 {print substr(\$6,2,100)}' <Cppsym2\$\$ ;;
*)
	sh Cppsym2\$\$
	status=\$?
	;;
esac
$rm -f Cppsym\$\$ Cppsym2\$\$
exit \$status
EOSS
chmod +x Cppsym
$eunicefix Cppsym
echo "Your C preprocessor defines the following symbols:"
Cppsym -l $attrlist >Cppsym.true
$cat Cppsym.true

: see if this is a termio system
val="$undef"
val2="$undef"
val3="$undef"
if $test `./findhdr termios.h`; then
	set tcsetattr i_termios
	eval $inlibc
	val3="$i_termios"
fi
echo " "
case "$val3" in
"$define") echo "You have POSIX termios.h... good!" >&4;;
*) if Cppsym pyr; then
		case "`/bin/universe`" in
		ucb) if $test `./findhdr sgtty.h`; then
				val2="$define"
				echo "<sgtty.h> found." >&4
			else
				echo "System is pyramid with BSD universe."
				echo "<sgtty.h> not found--you could have problems." >&4
			fi;;
		*) if $test `./findhdr termio.h`; then
				val="$define"
				echo "<termio.h> found." >&4
			else
				echo "System is pyramid with USG universe."
				echo "<termio.h> not found--you could have problems." >&4
			fi;;
		esac
	elif usg; then
		if $test `./findhdr termio.h`; then
			echo "<termio.h> found." >&4
			val="$define"
		elif $test `./findhdr sgtty.h`; then
			echo "<sgtty.h> found." >&4
			val2="$define"
		else
echo "Neither <termio.h> nor <sgtty.h> found--you could have problems." >&4
		fi
	else
		if $test `./findhdr sgtty.h`; then
			echo "<sgtty.h> found." >&4
			val2="$define"
		elif $test `./findhdr termio.h`; then
			echo "<termio.h> found." >&4
			val="$define"
		else
echo "Neither <sgtty.h> nor <termio.h> found--you could have problems." >&4
		fi
	fi;;
esac
set i_termio; eval $setvar
val=$val2; set i_sgtty; eval $setvar
val=$val3; set i_termios; eval $setvar

: see if ioctl defs are in sgtty/termio or sys/ioctl
echo " "
if $test `./findhdr sys/ioctl.h`; then
	val="$define"
	echo "<sys/ioctl.h> found." >&4
else
	val="$undef"
	$test $i_termio = "$define" && xxx="termio.h"
	$test $i_termios = "$define" && xxx="termios.h"
	$test $i_sgtty = "$define" && xxx="sgtty.h"
echo "No <sys/ioctl.h> found, assuming ioctl args are defined in <$xxx>." >&4
fi
set i_sysioctl
eval $setvar

: see if this is an sysndir system
set sys/ndir.h i_sysndir
eval $inhdr

: see if sys/select.h has to be included
set sys/select.h i_sysselct
eval $inhdr

: see if we should include time.h, sys/time.h, or both
echo " "
echo "Testing to see if we should include <time.h>, <sys/time.h> or both." >&4
$echo $n "I'm now running the test program...$c"
$cat >try.c <<'EOCP'
#include <sys/types.h>
#ifdef I_TIME
#include <time.h>
#endif
#ifdef I_SYSTIME
#ifdef SYSTIMEKERNEL
#define KERNEL
#endif
#include <sys/time.h>
#endif
#ifdef I_SYSSELECT
#include <sys/select.h>
#endif
main()
{
	struct tm foo;
#ifdef S_TIMEVAL
	struct timeval bar;
#endif
#ifdef S_TIMEZONE
	struct timezone tzp;
#endif
	if (foo.tm_sec == foo.tm_sec)
		exit(0);
#ifdef S_TIMEVAL
	if (bar.tv_sec == bar.tv_sec)
		exit(0);
#endif
	exit(1);
}
EOCP
flags=''
s_timezone=''
sysselect=''
for s_timeval in '-DS_TIMEVAL' ''; do
for i_systimek in '' '-DSYSTIMEKERNEL'; do
for i_time in '' '-DI_TIME'; do
for i_systime in '-DI_SYSTIME' ''; do
	case "$flags" in
	'') $echo $n ".$c"
		if $cc $ccflags \
		$i_time $i_systime $i_systimek $sysselect $s_timeval $s_timezone \
		try.c -o try >/dev/null 2>&1 ; then
			set X $i_time $i_systime $i_systimek $sysselect $s_timeval
			shift
			flags="$*"
			echo " "
			$echo $n "Succeeded with $flags$c"
		fi
		;;
	esac
done
done
done
done
timeincl=''
echo " "
case "$flags" in
*SYSTIMEKERNEL*) i_systimek="$define"
	timeincl=`./findhdr sys/time.h`
	echo "We'll include <sys/time.h> with KERNEL defined." >&4;;
*) i_systimek="$undef";;
esac
case "$flags" in
*I_TIME*) i_time="$define"
	timeincl=`./findhdr time.h`" $timeincl"
	echo "We'll include <time.h>." >&4;;
*) i_time="$undef";;
esac
case "$flags" in
*I_SYSTIME*) i_systime="$define"
	timeincl=`./findhdr sys/time.h`" $timeincl"
	echo "We'll include <sys/time.h>." >&4;;
*) i_systime="$undef";;
esac
$rm -f try.c try

: see if this is a unistd.h system
set unistd.h i_unistd
eval $inhdr

: see if this is an utime system
set utime.h i_utime
eval $inhdr

: see if this is a varargs system
echo " "
if $test `./findhdr varargs.h`; then
	val="$define"
	echo "<varargs.h> found." >&4
else
	val="$undef"
	echo "<varargs.h> NOT found, but that's ok (I hope)." >&4
fi
set i_varargs
eval $setvar

: set up the varargs testing programs
$cat > varargs.c <<EOP
#ifdef I_STDARG
#include <stdarg.h>
#endif
#ifdef I_VARARGS
#include <varargs.h>
#endif

#ifdef I_STDARG
int f(char *p, ...)
#else
int f(va_alist)
va_dcl
#endif
{
	va_list ap;
#ifndef I_STDARG
	char *p;
#endif
#ifdef I_STDARG
	va_start(ap,p);
#else
	va_start(ap);
	p = va_arg(ap, char *);
#endif
	va_end(ap);
}
EOP
$cat > varargs <<EOP
if $cc -c $ccflags -D\$1 varargs.c >/dev/null 2>&1; then
	echo "true"
else
	echo "false"
fi
$rm -f varargs.o
EOP
chmod +x varargs

: now check which varargs header should be included
echo " "
i_varhdr=''
case "$i_stdarg" in
"$define")
	if `./varargs I_STDARG`; then
		i_varhdr='stdarg.h'
		i_varargs="$undef"
	elif `./varargs I_VARARGS`; then
		i_varhdr='varargs.h'
		i_stdarg="$undef"
	fi
	;;
*)
	if `./varargs I_VARARGS`; then
		i_varhdr='varargs.h'
	fi
	;;
esac
case "$i_varhdr" in
'')
echo "I could not find the definition for va_dcl... You have problems..." >&4
	;;
*) echo "We'll include <$i_varhdr> to get va_dcl definition." >&4;;
esac
$rm -f varargs*

: see if this is a vfork system
case "$d_vfork" in
define) set vfork.h i_vfork
	eval $inhdr
	;;
*)      i_vfork="$undef";;
esac
: end of configuration questions
echo " "
echo "End of configuration questions."
echo " "

: back to where it started
if test -d ../UU; then
	cd ..
fi

: configuration may be patched via a 'config.over' file
if $test -f config.over; then
	echo " "
	dflt=y
	rp='I see a config.over file.  Do you wish to load it?'
	. UU/myread
	case "$ans" in
	n*) echo "OK, I'll ignore it.";;
	*)	. ./config.over
		echo "Configuration override changes have been loaded."
		;;
	esac
fi

: create config.sh file
echo " "
echo "Creating config.sh..." >&4
$spitshell <<EOT >config.sh
$startsh
#
# This file was produced by running the Configure script. It holds all the
# definitions figured out by Configure. Should you modify one of these values,
# do not forget to propagate your changes by running "Configure -der". You may
# instead choose to run each of the .SH files by yourself, or "Configure -S".
#

# Configuration time: $cf_time
# Configured by: $cf_by
# Target system: $myuname

extensions='$extensions'
d_eunice='$d_eunice'
d_xenix='$d_xenix'
eunicefix='$eunicefix'
Mcc='$Mcc'
awk='$awk'
bash='$bash'
bison='$bison'
byacc='$byacc'
cat='$cat'
chgrp='$chgrp'
chmod='$chmod'
chown='$chown'
compress='$compress'
cp='$cp'
cpio='$cpio'
cpp='$cpp'
csh='$csh'
date='$date'
echo='$echo'
egrep='$egrep'
emacs='$emacs'
expr='$expr'
find='$find'
flex='$flex'
gcc='$gcc'
grep='$grep'
inews='$inews'
ksh='$ksh'
less='$less'
line='$line'
lint='$lint'
ln='$ln'
lp='$lp'
lpr='$lpr'
ls='$ls'
mail='$mail'
mailx='$mailx'
make='$make'
mkdir='$mkdir'
more='$more'
mv='$mv'
nroff='$nroff'
perl='$perl'
pg='$pg'
pmake='$pmake'
pr='$pr'
rm='$rm'
rmail='$rmail'
sed='$sed'
sendmail='$sendmail'
sh='$sh'
shar='$shar'
sleep='$sleep'
smail='$smail'
sort='$sort'
submit='$submit'
tail='$tail'
tar='$tar'
tbl='$tbl'
test='$test'
touch='$touch'
tr='$tr'
troff='$troff'
uname='$uname'
uniq='$uniq'
uuname='$uuname'
vi='$vi'
zcat='$zcat'
hint='$hint'
myuname='$myuname'
osname='$osname'
osvers='$osvers'
Author='$Author'
Date='$Date'
Header='$Header'
Id='$Id'
Locker='$Locker'
Log='$Log'
RCSfile='$RCSfile'
Revision='$Revision'
Source='$Source'
State='$State'
afs='$afs'
memalignbytes='$memalignbytes'
bin='$bin'
binexp='$binexp'
installbin='$installbin'
byteorder='$byteorder'
cc='$cc'
gccversion='$gccversion'
ccflags='$ccflags'
cppflags='$cppflags'
ldflags='$ldflags'
lkflags='$lkflags'
optimize='$optimize'
cf_by='$cf_by'
cf_time='$cf_time'
contains='$contains'
cpplast='$cpplast'
cppminus='$cppminus'
cpprun='$cpprun'
cppstdin='$cppstdin'
d_access='$d_access'
d_bcmp='$d_bcmp'
d_bcopy='$d_bcopy'
d_bzero='$d_bzero'
d_casti32='$d_casti32'
castflags='$castflags'
d_castneg='$d_castneg'
d_charsprf='$d_charsprf'
d_chsize='$d_chsize'
d_const='$d_const'
cryptlib='$cryptlib'
d_crypt='$d_crypt'
d_csh='$d_csh'
d_dosuid='$d_dosuid'
d_dup2='$d_dup2'
d_fchmod='$d_fchmod'
d_fchown='$d_fchown'
d_fcntl='$d_fcntl'
d_flexfnam='$d_flexfnam'
d_flock='$d_flock'
d_getgrps='$d_getgrps'
d_gethent='$d_gethent'
aphostname='$aphostname'
d_gethname='$d_gethname'
d_phostname='$d_phostname'
d_uname='$d_uname'
d_getpgrp2='$d_getpgrp2'
d_getpgrp='$d_getpgrp'
d_getprior='$d_getprior'
d_htonl='$d_htonl'
d_isascii='$d_isascii'
d_killpg='$d_killpg'
d_link='$d_link'
d_lstat='$d_lstat'
d_memcmp='$d_memcmp'
d_memcpy='$d_memcpy'
d_memmove='$d_memmove'
d_memset='$d_memset'
d_mkdir='$d_mkdir'
d_msg='$d_msg'
d_msgctl='$d_msgctl'
d_msgget='$d_msgget'
d_msgrcv='$d_msgrcv'
d_msgsnd='$d_msgsnd'
d_open3='$d_open3'
d_portable='$d_portable'
d_readdir='$d_readdir'
d_rewinddir='$d_rewinddir'
d_seekdir='$d_seekdir'
d_telldir='$d_telldir'
d_rename='$d_rename'
d_rmdir='$d_rmdir'
d_safebcpy='$d_safebcpy'
d_safemcpy='$d_safemcpy'
d_select='$d_select'
d_sem='$d_sem'
d_semctl='$d_semctl'
d_semget='$d_semget'
d_semop='$d_semop'
d_setegid='$d_setegid'
d_seteuid='$d_seteuid'
d_setlocale='$d_setlocale'
d_setpgid='$d_setpgid'
d_setpgrp2='$d_setpgrp2'
d_bsdpgrp='$d_bsdpgrp'
d_setpgrp='$d_setpgrp'
d_setprior='$d_setprior'
d_setregid='$d_setregid'
d_setresgid='$d_setresgid'
d_setresuid='$d_setresuid'
d_setreuid='$d_setreuid'
d_setrgid='$d_setrgid'
d_setruid='$d_setruid'
d_setsid='$d_setsid'
d_shm='$d_shm'
d_shmat='$d_shmat'
d_voidshmat='$d_voidshmat'
d_shmctl='$d_shmctl'
d_shmdt='$d_shmdt'
d_shmget='$d_shmget'
d_oldsock='$d_oldsock'
d_socket='$d_socket'
d_sockpair='$d_sockpair'
sockethdr='$sockethdr'
socketlib='$socketlib'
d_statblks='$d_statblks'
d_stdstdio='$d_stdstdio'
d_index='$d_index'
d_strchr='$d_strchr'
d_strctcpy='$d_strctcpy'
d_strerrm='$d_strerrm'
d_strerror='$d_strerror'
d_sysernlst='$d_sysernlst'
d_syserrlst='$d_syserrlst'
d_symlink='$d_symlink'
d_syscall='$d_syscall'
d_system='$d_system'
d_time='$d_time'
timetype='$timetype'
clocktype='$clocktype'
d_times='$d_times'
d_truncate='$d_truncate'
d_usendir='$d_usendir'
i_ndir='$i_ndir'
ndirc='$ndirc'
ndirlib='$ndirlib'
ndiro='$ndiro'
d_vfork='$d_vfork'
d_voidsig='$d_voidsig'
signal_t='$signal_t'
d_volatile='$d_volatile'
d_charvspr='$d_charvspr'
d_vprintf='$d_vprintf'
d_wait4='$d_wait4'
d_waitpid='$d_waitpid'
cccdlflags='$cccdlflags'
ccdlflags='$ccdlflags'
dldir='$dldir'
dlobj='$dlobj'
dlsrc='$dlsrc'
lddlflags='$lddlflags'
shlibsuffix='$shlibsuffix'
usedl='$usedl'
gidtype='$gidtype'
groupstype='$groupstype'
h_fcntl='$h_fcntl'
h_sysfile='$h_sysfile'
i_dbm='$i_dbm'
d_dirnamlen='$d_dirnamlen'
i_dirent='$i_dirent'
i_dlfcn='$i_dlfcn'
i_fcntl='$i_fcntl'
i_gdbm='$i_gdbm'
i_grp='$i_grp'
i_memory='$i_memory'
i_ndbm='$i_ndbm'
i_neterrno='$i_neterrno'
i_niin='$i_niin'
i_sysin='$i_sysin'
d_pwage='$d_pwage'
d_pwchange='$d_pwchange'
d_pwclass='$d_pwclass'
d_pwcomment='$d_pwcomment'
d_pwexpire='$d_pwexpire'
d_pwquota='$d_pwquota'
i_pwd='$i_pwd'
i_sdbm='$i_sdbm'
i_stdarg='$i_stdarg'
i_stddef='$i_stddef'
i_string='$i_string'
strings='$strings'
i_sysdir='$i_sysdir'
i_sysfile='$i_sysfile'
d_voidtty='$d_voidtty'
i_bsdioctl='$i_bsdioctl'
i_sysioctl='$i_sysioctl'
i_syssockio='$i_syssockio'
i_sysndir='$i_sysndir'
i_sysselct='$i_sysselct'
i_sgtty='$i_sgtty'
i_termio='$i_termio'
i_termios='$i_termios'
i_systime='$i_systime'
i_systimek='$i_systimek'
i_time='$i_time'
timeincl='$timeincl'
i_unistd='$i_unistd'
i_utime='$i_utime'
i_varargs='$i_varargs'
i_varhdr='$i_varhdr'
i_vfork='$i_vfork'
intsize='$intsize'
lib='$lib'
libexp='$libexp'
libc='$libc'
libpth='$libpth'
plibpth='$plibpth'
xlibpth='$xlibpth'
libs='$libs'
lns='$lns'
lseektype='$lseektype'
d_mymalloc='$d_mymalloc'
mallocobj='$mallocobj'
mallocsrc='$mallocsrc'
malloctype='$malloctype'
usemymalloc='$usemymalloc'
installmansrc='$installmansrc'
manext='$manext'
mansrc='$mansrc'
mansrcexp='$mansrcexp'
huge='$huge'
large='$large'
medium='$medium'
models='$models'
small='$small'
split='$split'
mydomain='$mydomain'
myhostname='$myhostname'
phostname='$phostname'
c='$c'
n='$n'
groupcat='$groupcat'
hostcat='$hostcat'
passcat='$passcat'
orderlib='$orderlib'
ranlib='$ranlib'
package='$package'
spackage='$spackage'
installprivlib='$installprivlib'
privlib='$privlib'
privlibexp='$privlibexp'
prototype='$prototype'
ptrsize='$ptrsize'
randbits='$randbits'
installscript='$installscript'
scriptdir='$scriptdir'
scriptdirexp='$scriptdirexp'
sig_name='$sig_name'
sharpbang='$sharpbang'
shsharp='$shsharp'
spitshell='$spitshell'
startsh='$startsh'
stdchar='$stdchar'
sysman='$sysman'
uidtype='$uidtype'
nm_opt='$nm_opt'
runnm='$runnm'
usenm='$usenm'
incpath='$incpath'
mips='$mips'
mips_type='$mips_type'
usrinc='$usrinc'
defvoidused='$defvoidused'
voidflags='$voidflags'
yacc='$yacc'
yaccflags='$yaccflags'
EOT

: add special variables
$test -f patchlevel.h && \
awk '/^#define/ {printf "%s=%s\n",$2,$3}' patchlevel.h >>config.sh
echo "CONFIG=true" >>config.sh

: propagate old symbols
if $test -f UU/config.sh; then
	<UU/config.sh sort | uniq >UU/oldconfig.sh
	sed -n 's/^\([a-zA-Z_0-9]*\)=.*/\1/p' config.sh config.sh UU/oldconfig.sh |\
	sort | uniq -u >UU/oldsyms
	set X `cat UU/oldsyms`
	shift
	case $# in
	0) ;;
	*)
		cat <<EOM
Hmm...You had some extra variables I don't know about...I'll try to keep 'em...
EOM
		echo "# Variables propagated from previous config.sh file." >>config.sh
		for sym in `cat UU/oldsyms`; do
			echo "    Propagating $hint variable "'$'"$sym..."
			eval 'tmp="$'"${sym}"'"'
			echo "$tmp" | \
				sed -e "s/'/'\"'\"'/g" -e "s/^/$sym='/" -e "s/$/'/" >>config.sh
		done
		;;
	esac
fi

: Finish up by extracting the .SH files
case "$alldone" in
exit)
	$rm -rf UU
	echo "Done."
	exit 0
	;;
cont)
	;;
'')
	echo " "
	dflt=''
	nostick=true
echo "If you didn't make any mistakes, then just type a carriage return here."
	rp="If you need to edit config.sh, do it as a shell escape here:"
	. UU/myread
	nostick=''
	case "$ans" in
	'') ;;
	*) : in case they cannot read
		sh 1>&4 -c "$ans";;
	esac
	;;
esac

: if this fails, just run all the .SH files by hand
. ./config.sh

echo " "
exec 1>&4
. ./UU/extract

if $contains '^depend:' [Mm]akefile >/dev/null 2>&1; then
	dflt=y
	case "$silent" in
	true) ;;
	*)
		$cat <<EOM

Now you need to generate make dependencies by running "make depend".
You might prefer to run it in background: "make depend > makedepend.out &"
It can take a while, so you might not want to run it right now.

EOM
		;;
	esac
	rp="Run make depend now?"
	. UU/myread
	case "$ans" in
	y*)
		make depend && echo "Now you must run a make."
		;;
	*)
		echo "You must run 'make depend' then 'make'."
		;;
	esac
elif test -f [Mm]akefile; then
	echo " "
	echo "Now you must run a make."
else
	echo "Done."
fi

$rm -f kit*isdone ark*isdone
$rm -rf UU
: End of Configure