linstall

早期freebsd实现

#! /bin/sh
# Installation script for less.
# This script prompts the operator for various information
# and constructs a makefile.

echo "This script will build a makefile for less."
echo "If you already have a file called \"makefile\" it will be overwritten,"
echo "as will the file \"defines.h\"."
echo "Press RETURN to continue."
read ans

echo "I will ask you some questions about your system."
echo "If you do not know the answer to any question,"
echo "just press RETURN and I will choose a default for you."
echo "Press RETURN now."
read ans

ECHO=./vecho
if [ ! -f $ECHO ]
then
	echo "One moment..."
	cc -o $ECHO vecho.c
	echo ""
fi

$ECHO "Most Unix systems are derived from either System V"
$ECHO "or Berkeley BSD 4.1, 4.2, 4.3, etc."
$ECHO ""
$ECHO "Is your system closest to:"
$ECHO "  1. System V"
$ECHO "  2. BSD 4.1"
$ECHO "  3. BSD 4.2 or later"
$ECHO "  4. Xenix"
$ECHO "Enter a number, or just RETURN if you don't know: \c"
read ans
xenix=0
case "X$ans" in
X1) sys=sys5; sysname="System V" ;;
X2) sys=bsd; bsd41=1; sysname="BSD 4.1" ;;
X3) sys=bsd; bsd41=0; sysname="BSD 4.2" ;;
X4) sys=sys5; xenix=1; sysname="Xenix" ;;
*) sys=unknown ;;
esac
$ECHO ""

DATE=`date`
cat >makefile <<EOF
# Makefile for "less"
# Generated $DATE by $0.
EOF

cat >>makefile <<"EOF"
#
# Invoked as:
#	make all
#   or	make install
# Plain "make" is equivalent to "make all".
#
# If you add or delete functions, remake funcs.h by doing:
#	make newfuncs
# This depends on the coding convention of function headers looking like:
#	" \t public <function-type> \n <function-name> ( ... ) "
#
# Also provided:
#	make lint	# Runs "lint" on all the sources.
#	make clean	# Removes "less" and the .o files.
#	make clobber	# Pretty much the same as make "clean".

SHELL = /bin/sh

EOF

cat >defines.h <<EOF
/* Definition file for less */
/* Generated $DATE by $0. */

EOF

cat >>defines.h <<EOF
/*
 * Define XENIX if running under XENIX 3.0.
 */
#define	XENIX		$xenix

EOF
$ECHO ""



if [ "X$sys" = "Xunknown" ]
then
	alldefault=0
else
	def=yes
	alldefault=1
	$ECHO "Do you want to use ALL the defaults for $sysname?"
	$ECHO "  Enter \"yes\" if you have a STANDARD $sysname."
	$ECHO "  Enter \"no\" if you want to change any of the defaults. [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) alldefault=1 ;;
	X[nN]*) alldefault=0 ;;
	esac
	$ECHO ""
fi

if [ $alldefault = 0 ]
then
	alloptional=0
else
	def=yes
	alloptional=1
	$ECHO "Do you want to use all the optional features of less?"
	$ECHO "  Less has several features which you may or may not"
	$ECHO "  wish to include, such as shell escapes."
	$ECHO "  Enter \"yes\" if you want to include ALL the optional features."
	$ECHO "  Enter \"no\" if you want to select individual features. [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) alloptional=1 ;;
	X[nN]*) alloptional=0 ;;
	esac
	$ECHO ""
fi



def=yes
x=1
if [ $alldefault = 0 ]
then
	$ECHO "Does your C compiler support the \"void\" type? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * VOID is 1 if your C compiler supports the "void" type,
 * 0 if it does not.
 */
#define	VOID		$x

EOF



def=yes
x="void *"
if [ $alldefault = 0 ]
then
	$ECHO "Does your C compiler support the \"void *\" type? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x="void *" ;;
	X[nN]*) x="char *" ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * VOID_POINTER is the definition of a pointer to any object.
 */
#define	VOID_POINTER	$x

EOF



def=long
if [ $alldefault = 0 ]
then
	$ECHO "What type is the \"offset\" argument to lseek? [$def] \c"
	read ans
	if [ "X$ans" != "X" ]
	then
		def=$ans
	fi
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * offset_t is the type which lseek() returns.
 * It is also the type of lseek()'s second argument.
 */
#define	offset_t	$def

EOF




def=yes; x=1
if [ $alldefault = 0 ]
then
	$ECHO "Most Unix systems provide the stat() function."
	$ECHO "Does your system have stat()? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * STAT is 1 if your system has the stat() call.
 */
#define	STAT		$x

EOF




def=yes; x=1
if [ $alldefault = 0 ]
then
	$ECHO "Most Unix systems provide the perror() function."
	$ECHO "Does your system have perror()? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * PERROR is 1 if your system has the perror() call.
 * (Actually, if it has sys_errlist, sys_nerr and errno.)
 */
#define	PERROR		$x

EOF




def=yes; x=1
if [ $alldefault = 0 ]
then
	$ECHO "Most Unix systems provide the time() function."
	$ECHO "Does your system have time()? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * GET_TIME is 1 if your system has the time() call.
 */
#define	GET_TIME	$x

EOF

if [ $x = 0 ]
then
	$ECHO "What is the APPROXIMATE performance of your"
	$ECHO "machine, as a percentage of a Vax 11/750?"
	$ECHO "(Enter 100 if your machine is as fast as a Vax,"
	$ECHO " 50 if it is half as fast, 200 if it is twice as fast, etc.)"
	$ECHO "The accuracy of this information is not critical."
	while :
	do
		$ECHO "Percent of Vax 11/750 [100]: \c"
		read ans
		if [ "X$ans" = "X" ]
		then
			ans=100
		fi
		longloop=`expr "$ans" "*" 3`
		if [ $? = 0 ]
		then
			break
		fi
		$ECHO "Enter a number please!"
	done
	$ECHO ""

	cat >>defines.h <<EOF
/*
 * LONGLOOP is the number of lines we should process in the line number
 * scan before displaying a warning that it will take a while.
 */
#define	LONGLOOP	($longloop)
EOF
fi




if [ "$sys" = "bsd" ]
then
	def=no; x=0
else
	def=yes; x=1
fi
if [ $alldefault = 0 ]
then
	$ECHO "Most System V systems have termio.h, while most"
	$ECHO "Berkeley-derived systems have sgtty.h."
	$ECHO "Does your system have termio.h? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * TERMIO is 1 if your system has /usr/include/termio.h.
 * This is normally the case for System 5.
 * If TERMIO is 0 your system must have /usr/include/sgtty.h.
 * This is normally the case for BSD.
 */
#define	TERMIO		$x

EOF




if [ "$sys" = "bsd" -a "$bsd41" = "0" ]
then
	def=yes; x=1
else
	def=no; x=0
fi
if [ $alldefault = 0 ]
then
	$ECHO "Most BSD 4.2 and 4.3 systems have both _setjmp() and setjmp()."
	$ECHO "Most System V and BSD 4.1 systems have only setjmp()."
	$ECHO "Does your system have both _setjmp() and setjmp()? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * HAS__SETJMP is 1 if your system has the _setjmp() call.
 * This is normally the case only for BSD 4.2 and up,
 * not for BSD 4.1 or System 5.
 */
#define	HAS__SETJMP	$x

EOF




if [ "$sys" = "bsd" -a "$bsd41" = "0" ]
then
	def=yes; x=1
else
	def=no; x=0
fi
if [ $alldefault = 0 ]
then
	$ECHO "Most BSD 4.2 and 4.3 systems have the sigsetmask() call."
	$ECHO "Most System V and BSD 4.1 systems do not."
	$ECHO "Does your system have sigsetmask()? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * SIGSETMASK is 1 if your system has the sigsetmask() call.
 * This is normally the case only for BSD 4.2,
 * not for BSD 4.1 or System 5.
 */
#define	SIGSETMASK	$x

EOF




if [ "$sys" = "sys5" -a "$xenix" = "0" ]
then
	def=yes; x=1
else
	def=no; x=0
fi
if [ $alldefault = 0 ]
then
	$ECHO "Some SCO System V systems need sys/ptem.h included to get"
	$ECHO "the size of the screen (struct winsize)."
	$ECHO "Does your system need sys/ptem.h? [$def] \c"
	read ans
	case "X$ans" in
	X[yY]*) x=1 ;;
	X[nN]*) x=0 ;;
	esac
	$ECHO ""
fi
cat >>defines.h <<EOF
/*
 * NEED_PTEM_H is 1 if your system needs sys/ptem.h to declare struct winsize.
 * This is normally the case only for SCOs System V.
 */
#define	NEED_PTEM_H	$x

EOF


if [ "$sys" = "bsd" ]
then
	def=2; REGCMP=0;RECOMP=1
else
	def=1; REGCMP=1;RECOMP=0
fi
if [ $alldefault = 0 ]
then
	$ECHO "Most System V systems have the regcmp() function."
	$ECHO "Most Berkeley-derived systems have the re_comp() function."
	$ECHO "Does your system have:"