support/rlvers.sh

   1 #! /bin/sh
   2 #
   3 # rlvers.sh -- run a program that prints out the readline version number
   4 #              using locally-installed readline libraries
   5 #
   6
   7 # Copyright (C) 1996-2002 Free Software Foundation, Inc.
   8 #
   9 #   This program is free software: you can redistribute it and/or modify
  10 #   it under the terms of the GNU General Public License as published by
  11 #   the Free Software Foundation, either version 3 of the License, or
  12 #   (at your option) any later version.
  13 #
  14 #   This program is distributed in the hope that it will be useful,
  15 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 #   GNU General Public License for more details.
  18 #
  19 #   You should have received a copy of the GNU General Public License
  20 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22
  23 PROGNAME=`basename $0`
  24
  25 : ${TMPDIR:=/tmp}
  26 TDIR=$TMPDIR/rlvers
  27
  28 # defaults
  29 CC=cc
  30 RL_LIBDIR=/usr/local/lib
  31 RL_INCDIR=/usr/local/include
  32
  33 TERMCAP_LIB="-ltermcap"
  34
  35 # cannot rely on the presence of getopts
  36 while [ $# -gt 0 ]; do
  37         case "$1" in
  38         -C)     shift ; CC="$1"; shift ;;
  39         -I)     shift ; RL_INCDIR="$1" ; shift ;;
  40         -L)     shift ; RL_LIBDIR="$1" ; shift ;;
  41         -T)     shift ; TERMCAP_LIB="$1" ; shift ;;
  42         -v)     shift ; verbose=y ;;
  43         --)     shift ; break ;;
  44         *)      echo "${PROGNAME}: usage: $PROGNAME [-C compiler] [-L libdir] [-v]" >&2 ; exit 2;;
  45         esac
  46 done
  47
  48 # if someone happened to install examples/rlversion, use it (it's not
  49 # installed by default)
  50 if test -f ${RL_LIBDIR}/rlversion ; then
  51         if [ -n "$verbose" ]; then
  52                 echo "${PROGNAME}: using installed rlversion from ${RL_LIBDIR}/rlversion"
  53         fi
  54         v=`${RL_LIBDIR}/rlversion 2>/dev/null`
  55         case "$v" in
  56         unknown | "")   echo 0 ;;
  57         *)              echo "$v" ;;
  58         esac
  59         exit 0
  60 fi
  61
  62 if [ -n "$verbose" ]; then
  63         echo "${PROGNAME}: using ${RL_LIBDIR} to find libreadline"
  64         echo "${PROGNAME}: attempting program compilation"
  65 fi
  66
  67 # make $TDIR mode 0700
  68 mkdir $TDIR || {
  69         echo "${PROGNAME}: ${TDIR}: file exists" >&2
  70         echo 0
  71         exit 1
  72 }
  73 chmod 700 $TDIR
  74
  75 trap 'rm -f $TDIR/rlvers $TDIR/rlvers.? ; rmdir $TDIR' 0 1 2 3 6 15
  76
  77 cat > $TDIR/rlvers.c << EOF
  78 #include <stdio.h>
  79 extern char *rl_library_version;
  80
  81 main()
  82 {
  83         printf("%s\n", rl_library_version ? rl_library_version : "0");
  84         exit(0);
  85 }
  86 EOF
  87
  88 opwd=`pwd`
  89
  90 cd $TDIR || {
  91         echo "${PROGNAME}: cannot cd to $TDIR" >&2
  92         echo 0
  93         exit 1
  94 }
  95
  96 if eval ${CC} -L${RL_LIBDIR} -I${RL_INCDIR} -o $TDIR/rlvers $TDIR/rlvers.c -lreadline ${TERMCAP_LIB};
  97 then
  98         v=`$TDIR/rlvers`
  99 else
 100         if [ -n "$verbose" ] ; then
 101                 echo "${PROGNAME}: compilation failed: status $?"
 102                 echo "${PROGNAME}: using version 0"
 103         fi
 104         v=0
 105 fi
 106
 107 case "$v" in
 108 unknown | "")   echo 0 ;;
 109 *)              echo "$v" ;;
 110 esac
 111
 112 cd $opwd
 113 exit 0