usr/contrib/B/Setup

: 'Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1984, 1985.'

echo "Configuration questions for the B system."

: 'Determine if echo -n works'
echo -n "bleep" >.bleep
if grep n .bleep >/dev/null 2>&1
then
        n=""
else
        n="-n"
fi
rm -f .bleep

: 'What machine?'
echo " "
echo $n "Figuring out what machine you have "
echo $n "..."
cat >machine.c <<EOF
#include <stdio.h>
main() {
#ifdef vax
        printf("vax\n");
#else
#ifdef pdp
        printf("pdp\n");
#else
#ifdef PDP
        printf("pdp\n");
#else
        printf("other\n");
#endif
#endif
#endif
}
EOF
cc machine.c -o machine
machine=`machine`
rm -f machine*
echo " "
case $machine in
vax)
        echo "This machine appears to be a VAX."
        echo $n "Is this true? "
        read ans
        case $ans in
        n*|N*|f*|F*)    machine="other"
                ;;
        *)      bint="bint"
                ;;
        esac
        ;;
pdp)
        echo "This machine appears to be a PDP."
        echo $n "Is this true? "
        read ans
        case $ans in
        n*|N*|f*|F*)    machine="other"
                ;;
        *)      bint="bsmall"
                ;;
        esac
        ;;
esac
case $machine in
other)
        echo "Your machine does not appear to be a VAX or PDP."
        echo $n "Is this a small machine (less than 190K code space)? "
        read ans
        case $ans in
        y*|Y*)  bint="bsmall"
                ;;
        *)      bint="bint"
                ;;
        esac
        echo " "
        echo "Since your machine may not be a VAX or PDP, you might have to edit"
        echo "the configuration file for the B interpreter '$bint'."
        echo "Check the remarks in b0con.h and README in ./src/$bint."
        ;;
esac

case $bint in
"bsmall")
        echo " "
        echo "Since you have a small system, we can only use the old"
        echo "version of the B interpreter, named $bint."
        echo "See the file ./src/bsmall/README for details."
        echo " "
        echo "The B editor is too big in its full glory."
        echo "Therefore all kinds of features will be turned off in an"
        echo "attempt to make it fit."
        echo "See ./src/bed/feat.h for details."
        ;;
esac

: 'What unix?'
echo " "
echo $n "Finding out about your brand of unix "
echo $n "..."
cat >unix.c <<EOF
#include <stdio.h>
#include <signal.h>
main() {
#ifdef SIGCHLD
#ifdef SIGVTALRM
        printf("BSD4_2\n");
#else
        printf("BSD\n");
#endif
#else
#ifdef SIGCLD
        printf("ATT\n");
#else
        printf("unknown\n"); /* Version 7 we hope ... */
#endif
#endif
}
EOF
cc unix.c -o unix
unix=`unix`
rm -f unix*

echo " "
case $unix in
BSD4_2)
        echo "You appear to be running Berkeley's BSD unix, version 4.2 (or later)."
        echo $n "Is this true? "
        read ans
        case $ans in
        n*|N*|f*|F*)    unix="unknown";;
        esac
        ;;
BSD)
        echo "You appear to be running Berkeley's BSD unix."
        echo $n "Is this true? "
        read ans
        case $ans in
        n*|N*|f*|F*)    unix="unknown";;
        esac
        ;;
ATT)
        echo "You appear to be running ATT's System III or System V unix."
        echo $n "Is this true? "
        read ans
        case $ans in
        n*|N*|f*|F*)    unix="unknown";;
        esac
        ;;
esac

case $machine in
pdp|other)
        case $unix in
        unknown)
                echo $n "Are you running PWB Unix? "
                read ans
                case $ans in
                y*|Y*)  unix="PWB";;
                esac
                ;;
        esac
esac

case $unix in
unknown)
        echo " "
        echo "We cannot find out what type of unix you are running."
        echo "See ./src/bed/unix.h, ./src/bed/feat.h, /src/$bint/README"
        echo "and ./src/$bint/b0con.h in case of problems."
        ;;
esac

: 'Floating point arithmetic ok?'
echo " "
cat >float.c <<EOF
#include <stdio.h>
double dadd(a, b) double a, b; {
        return a+b;
}
main() {
        double a, b, c;
        double dadd();
        a = 3.14;
        b = 2.7 * a;
        c = dadd(a, b);
        exit(0);
}
EOF
cc -O float.c -o float >/dev/null 2>&1
if sh 2>/dev/null <<EOF
        if float
        then exit 0
        else exit 1
        fi
EOF
then
        echo "Your floating point seems to be alright."
        fflag=""
else
        echo "Your C compiler seems to need a special flag for"
        echo "loading (probably software) floating point routines."
        echo $n "What flag is needed (default -f) "
        read fflag
        case $fflag in
        '')     fflag="-f";;
        esac
        cc -O $fflag float.c -o float >/dev/null 2>&1
        until sh 2>/dev/null <<EOF
                if float
                then exit 0
                else exit 1
                fi
EOF
        do
                echo "This flag doesn't seem to work."
                echo "Try again (default -f) "
                read fflag
                case $fflag in
                '')     fflag="-f";;
                esac
                cc -O $fflag float.c -o float >/dev/null 2>&1
        done
fi
rm -f float* core

: 'termio system?'
if test -r /usr/include/termio.h
then
        termio="yes"
        echo " "
        echo "Termio.h found."
else
        termio="no"
        if test ! -r /usr/include/sgtty.h
        then
                echo " "
                echo "Neither termio.h nor sgtty.h found."
                echo "See ./src/bed/unix.h in case of problems."
        fi
fi

: 'termcap library for B editor'
echo " "
echo $n "Searching for your termcap-like library routines "
echo $n "... "
if test -r /lib/libtermcap.a -o -r /usr/lib/libtermcap.a
then
        termlib="-ltermcap"
        echo "termcap library found."
elif test -r /usr/local/lib/libtermcap.a
then
        termlib="/usr/local/lib/libtermcap.a"
        echo "local termcap library found."
elif test -r /lib/libtermlib.a -o -r /usr/lib/libtermlib.a
then
        termlib="-ltermlib"
        echo "termlib library found."
elif test -r /usr/local/lib/libtermlib.a
then
        termlib="/usr/local/lib/libtermlib.a"
        echo "local termlib library found."
elif test -r /lib/libcurses.a -o -r /usr/lib/libcurses.a
then
        termlib="-lcurses"
        echo "terminfo library found."
elif test -r /usr/local/lib/libcurses.a
then
        termlib="/usr/local/lib/libcurses.a"
        echo "local terminfo library found."
else
        : 'changed for 4.3 BSD release'
        termlib="ask_it"
fi
while test "$termlib" = "ask_it" -o "$termlib" = "try_again"; do
        case $termlib in
        ask_it)
                echo " "
                echo "Please specify where the termcap-like routines are kept"
                echo $n " (either full pathname or -lxxx option) "
                ;;
        try_again)
                echo $n "Please try again (full pathname or -lyyy option) "
                ;;
        esac
        read termlib
        case $termlib in
        -l*)
                echo "Hope $termlib will do the job."
                ;;
        /*)
                if test -r $termlib
                then
                        echo "Ok, we will try that one."
                else
                        echo "$termlib does not appear to exist."
                        termlib="try_again"
                fi
                ;;
        *)
                echo "$termlib is not a valid library specification."
                termlib="try_again"
                ;;
        esac
done

: 'termcap database, commented out for 4.3 BSD'
#echo " "
#if test -r /etc/termcap
#then
#       termcap="yes"
#       echo "Termcap database found."
#else
#       termcap="no"
#       echo "No termcap database found; we will install our own, to be used"
#       echo "when your TERMCAP environment variable is not set."
#fi


: 'Shall we make B public?'
public="no"
echo " "
echo $n "Will you want to make B publically available? "
read ans
case $ans in
y*|Y*)
public="yes"
if test -r answers
then
        . answers
else
        bdef="/usr/new"
        libdef="/usr/new/lib/B"
        man1def="/usr/man/mann"
        man5def="/usr/man/mann"
fi
bdir='blurfl'
while test ! -d "$bdir" ; do
        case $bdir in
        blurfl)
                echo " "
                echo "Please type the full pathname of a directory"
                echo "in which you have write permission,"
                echo "and where you want the 'b' command file installed"
                echo $n " (default $bdef) "
                ;;
        *)      echo "$bdir does not appear to exist."
                echo $n "Are you sure you typed the right name? "
                read ans
                case $ans in
                y*|Y*)  echo "Don't forget to make $bdir before 'make install'."
                        break
                        ;;
                *)      echo " "
                        echo $n "Please try again (default $bdef) "
                        ;;
                esac
                ;;
        esac
        read bdir
        case $bdir in
        "") bdir=$bdef;;
        esac
done
libdir='blurfl'
while test ! -d "$libdir" ; do
        case $libdir in
        blurfl)
                echo " "
                echo "Please type the full pathname of the directory"
                echo "where you want to install the auxiliary binaries"
                echo "and datafiles needed by the B system"
                echo $n " (default $libdef) "
                ;;
        *)      echo "$libdir does not appear to exist."
                echo $n "Are you sure you typed the right name? "
                read ans
                case $ans in
                *|Y*)   echo "Don't forget to make $libdir before 'make install'."
                        break
                        ;;
                *)      echo " "
                        echo $n "Please try again (default $libdef) "
                        ;;
                esac
                ;;
        esac
        read libdir
        case $libdir in
        "") libdir=$libdef;;
        esac
done
man1dir='blurfl'
while test ! -d "$man1dir" ; do
        case $man1dir in
        blurfl)
                echo " "
                echo "Please type the full pathname of the directory"
                echo "where you want to install the 'b.1' manual page"
                echo $n " (default $man1def) "
                ;;
        *)      echo "$man1dir does not appear to exist."
                echo $n "Are you sure you typed the right name? "
                read ans
                case $ans in
                y*|Y*)  echo "Don't forget to make $man1dir before 'make install'."
                        break
                        ;;
                *)      echo " "
                        echo $n "Please try again (default $man1def) "
                        ;;
                esac
                ;;
        esac
        read man1dir
        case $man1dir in
        "") man1dir=$man1def;;
        esac
done
man5dir='blurfl'
while test ! -d "$man5dir" ; do
        case $man5dir in
        blurfl)
                echo " "
                echo "Please type the full pathname of the directory"
                echo "where you want to install the 'bterminal.5' manual page"
                echo $n " (default $man5def) "
                ;;
        *)      echo "$man5dir does not appear to exist."
                echo $n "Are you sure you typed the right name? "
                read ans
                case $ans in
                y*|Y*)  echo "Don't forget to make $man5dir before 'make install'."
                        break
                        ;;
                *)      echo " "
                        echo $n "Please try again (default $man5def) "
                        ;;
                esac
                echo $n "Please try again "
                ;;
        esac
        read man5dir
        case $man5dir in
        "") man5dir=$man5def;;
        esac
done

cat >answers <<EOF
bdef="$bdir"
libdef="$libdir"
man1def="$man1dir"
man5def="$man5dir"
EOF
;;
esac
echo " "
echo "End of configuration questions for the B system."

: 'Getting generic copies of makefiles and shellfiles.'
: 'Since some tar_s leave the owner of the tape as the owner of the files'
: 'this will make sure the edit scripts will not fail.'

makefiles="./Makefile src/b/Makefile src/bed/Makefile src/bint/Makefile src/bsmall/Makefile"
shellfiles="src/b/b.sh src/b/b_p.sh"

editor="ed -"

cat >mf.head <<EOF
# This file was generated and edited by the Setup command.
# To make lasting changes edit the file Makefile.gen and run Setup again.
#
EOF
for f in $makefiles
do
        cat mf.head $f.gen >$f
        chmod 644 $f
done
rm -f mf.head

for f in $shellfiles
do
        cp $f.gen $f
        chmod 755 $f
done

echo " "
echo $n "Editing Appropriate files ... "

case $machine in
pdp)
        f=src/bed/Makefile
        $editor $f <<EOF
        /^LDFLAGS=/s?LDFLAGS=.*?LDFLAGS= -i?
        w
        q
EOF
        f=src/bsmall/Makefile
        $editor $f <<EOF
        /^LDFLAGS=/s?LDFLAGS=.*?LDFLAGS= -i?
        w
        q
EOF
        ;;
esac

: 'Not all CFLAGS are used by all sources.'
: 'But for convenience and future use, we put them into all source Makefiles.'

cflags="-O $fflag -DNDEBUG"

for f in Makefile src/b/b.sh src/bed/Makefile
do
        $editor $f <<EOF
        /^BINT=/s?BINT=.*?BINT=$bint?
        w
        q
EOF
done

case $bint in
bsmall)
        f=Makefile
        $editor $f <<EOF
        /examples$/s?make .*examples?make smallexamples?
        w
        q
EOF
        cflags="$cflags -DSMALLSYS"
        ;;
esac

case $unix in
BSD|BSD4_2|PWB)
        cflags="$cflags -D$unix"
        ;;
ATT)
        cflags="$cflags -Dindex=strchr -Drindex=strrchr"
        ;;
esac

case $termio in
yes)
        cflags="$cflags -DTERMIO"
        ;;
esac

for f in src/b/Makefile src/bed/Makefile src/$bint/Makefile
do
        $editor $f <<EOF
        /^CFLAGS=/s?CFLAGS=.*?CFLAGS= $cflags?
        w
        q
EOF
done

case $termlib in
-l*|/*)
        f=src/bed/Makefile
        $editor $f <<EOF
        /^TERMLIB=/s?.*?TERMLIB= $termlib?
        /^OWNTLIB=/s?.*?OWNTLIB=?
        w
        q
EOF
        ;;
libtermcap.a)
        f=src/bed/Makefile
        $editor $f <<EOF
        /^TERMLIB=/s?.*?TERMLIB=?
        /^OWNTLIB=/s?.*?OWNTLIB= libtermcap.a?
        w
        q
EOF
        ;;
esac

#case $termcap in
#no)
#       f=src/b/Makefile
#       $editor $f <<"EOF"
#       /^install:/s?.*?install:        all ldest termcap?
#       w
#       q
#EOF
#       ;;
#esac

case $public in
yes)
        f=Makefile
        $editor $f <<EOF
        /^BDIR=/s?BDIR=.*?BDIR=$bdir?
        /^MAN1DIR=/s?MAN1DIR=.*?MAN1DIR=$man1dir?
        /^MAN5DIR=/s?MAN5DIR=.*?MAN5DIR=$man5dir?
        /^LIBDIR=/s?LIBDIR=.*?LIBDIR=$libdir?
        w
        q
EOF
        ;;
esac

echo "done."

echo " "
echo "This completes the setup of the B system."
echo "You can now try 'make all'."