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 PROGNAME=`basename $0`
   8
   9 trap 'rm -f /tmp/rlvers /tmp/rlvers.?' 0 1 2 3 6 15
  10
  11 # defaults
  12 CC=cc
  13 RL_LIBDIR=/usr/local/lib
  14
  15 while [ $# -gt 0 ]; do
  16         case "$1" in
  17         -C)     shift ; CC="$1"; shift ;;
  18         -L)     shift ; RL_LIBDIR="$1" ; shift ;;
  19         -v)     shift ; verbose=y ;;
  20         --)     shift ; break ;;
  21         *)      echo "${PROGNAME}: usage: $PROGNAME [-C compiler] [-L libdir] [-v]" >&2 ; exit 2;;
  22         esac
  23 done
  24
  25 # if someone happened to install examples/rlversion, use it (it's not
  26 # installed by default)
  27 if test -f ${RL_LIBDIR}/rlversion ; then
  28         if [ -n "$verbose" ]; then
  29                 echo "${PROGNAME}: using installed rlversion from ${RL_LIBDIR}/rlversion"
  30         fi
  31         v=`${RL_LIBDIR}/rlversion 2>/dev/null`
  32         case "$v" in
  33         unknown | "")   echo 0 ;;
  34         *)              echo "$v" ;;
  35         esac
  36         exit 0
  37 fi
  38
  39 if [ -n "$verbose" ]; then
  40         echo "${PROGNAME}: using ${RL_LIBDIR} to find libreadline"
  41         echo "${PROGNAME}: attempting program compilation"
  42 fi
  43
  44 cat > /tmp/rlvers.c << EOF
  45 #include <stdio.h>
  46 extern char *rl_library_version;
  47
  48 main()
  49 {
  50         printf("%s\n", rl_library_version ? rl_library_version : "0");
  51         exit(0);
  52 }
  53 EOF
  54
  55 if eval ${CC} -L${RL_LIBDIR} -o /tmp/rlvers /tmp/rlvers.c -lreadline -ltermcap -lcurses;
  56 then
  57         v=`/tmp/rlvers`
  58 else
  59         if [ -n "$verbose" ] ; then
  60                 echo "${PROGNAME}: compilation failed: status $?"
  61                 echo "${PROGNAME}: using version 0"
  62         fi
  63         v=0
  64 fi
  65
  66 case "$v" in
  67 unknown | "")   echo 0 ;;
  68 *)              echo "$v" ;;
  69 esac
  70
  71 exit 0