mirror of https://github.com/n-hys/bash.git
114 lines
2.6 KiB
Bash
Executable File
114 lines
2.6 KiB
Bash
Executable File
#! /bin/sh
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#
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# rlvers.sh -- run a program that prints out the readline version number
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# using locally-installed readline libraries
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#
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# Copyright (C) 1996-2002 Free Software Foundation, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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PROGNAME=`basename $0`
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: ${TMPDIR:=/tmp}
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TDIR=$TMPDIR/rlvers
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# defaults
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CC=cc
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RL_LIBDIR=/usr/local/lib
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RL_INCDIR=/usr/local/include
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TERMCAP_LIB="-ltermcap"
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# cannot rely on the presence of getopts
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while [ $# -gt 0 ]; do
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case "$1" in
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-C) shift ; CC="$1"; shift ;;
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-I) shift ; RL_INCDIR="$1" ; shift ;;
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-L) shift ; RL_LIBDIR="$1" ; shift ;;
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-T) shift ; TERMCAP_LIB="$1" ; shift ;;
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-v) shift ; verbose=y ;;
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--) shift ; break ;;
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*) echo "${PROGNAME}: usage: $PROGNAME [-C compiler] [-L libdir] [-v]" >&2 ; exit 2;;
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esac
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done
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# if someone happened to install examples/rlversion, use it (it's not
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# installed by default)
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if test -f ${RL_LIBDIR}/rlversion ; then
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if [ -n "$verbose" ]; then
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echo "${PROGNAME}: using installed rlversion from ${RL_LIBDIR}/rlversion"
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fi
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v=`${RL_LIBDIR}/rlversion 2>/dev/null`
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case "$v" in
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unknown | "") echo 0 ;;
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*) echo "$v" ;;
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esac
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exit 0
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fi
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if [ -n "$verbose" ]; then
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echo "${PROGNAME}: using ${RL_LIBDIR} to find libreadline"
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echo "${PROGNAME}: attempting program compilation"
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fi
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# make $TDIR mode 0700
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mkdir $TDIR || {
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echo "${PROGNAME}: ${TDIR}: file exists" >&2
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echo 0
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exit 1
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}
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chmod 700 $TDIR
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trap 'rm -f $TDIR/rlvers $TDIR/rlvers.? ; rmdir $TDIR' 0 1 2 3 6 15
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cat > $TDIR/rlvers.c << EOF
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#include <stdio.h>
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extern char *rl_library_version;
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main()
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{
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printf("%s\n", rl_library_version ? rl_library_version : "0");
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exit(0);
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}
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EOF
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opwd=`pwd`
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cd $TDIR || {
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echo "${PROGNAME}: cannot cd to $TDIR" >&2
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echo 0
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exit 1
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}
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if eval ${CC} -L${RL_LIBDIR} -I${RL_INCDIR} -o $TDIR/rlvers $TDIR/rlvers.c -lreadline ${TERMCAP_LIB};
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then
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v=`$TDIR/rlvers`
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else
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if [ -n "$verbose" ] ; then
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echo "${PROGNAME}: compilation failed: status $?"
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echo "${PROGNAME}: using version 0"
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fi
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v=0
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fi
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case "$v" in
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unknown | "") echo 0 ;;
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*) echo "$v" ;;
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esac
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cd $opwd
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exit 0
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