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-rwxr-xr-xsupport/rlvers.sh113
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diff --git a/support/rlvers.sh b/support/rlvers.sh
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+#! /bin/sh
+#
+# rlvers.sh -- run a program that prints out the readline version number
+# using locally-installed readline libraries
+#
+
+# Copyright (C) 1996-2002 Free Software Foundation, Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+PROGNAME=`basename $0`
+
+: ${TMPDIR:=/tmp}
+TDIR=$TMPDIR/rlvers
+
+# defaults
+CC=cc
+RL_LIBDIR=/usr/local/lib
+RL_INCDIR=/usr/local/include
+
+TERMCAP_LIB="-ltermcap"
+
+# cannot rely on the presence of getopts
+while [ $# -gt 0 ]; do
+ case "$1" in
+ -C) shift ; CC="$1"; shift ;;
+ -I) shift ; RL_INCDIR="$1" ; shift ;;
+ -L) shift ; RL_LIBDIR="$1" ; shift ;;
+ -T) shift ; TERMCAP_LIB="$1" ; shift ;;
+ -v) shift ; verbose=y ;;
+ --) shift ; break ;;
+ *) echo "${PROGNAME}: usage: $PROGNAME [-C compiler] [-L libdir] [-v]" >&2 ; exit 2;;
+ esac
+done
+
+# if someone happened to install examples/rlversion, use it (it's not
+# installed by default)
+if test -f ${RL_LIBDIR}/rlversion ; then
+ if [ -n "$verbose" ]; then
+ echo "${PROGNAME}: using installed rlversion from ${RL_LIBDIR}/rlversion"
+ fi
+ v=`${RL_LIBDIR}/rlversion 2>/dev/null`
+ case "$v" in
+ unknown | "") echo 0 ;;
+ *) echo "$v" ;;
+ esac
+ exit 0
+fi
+
+if [ -n "$verbose" ]; then
+ echo "${PROGNAME}: using ${RL_LIBDIR} to find libreadline"
+ echo "${PROGNAME}: attempting program compilation"
+fi
+
+# make $TDIR mode 0700
+mkdir $TDIR || {
+ echo "${PROGNAME}: ${TDIR}: file exists" >&2
+ echo 0
+ exit 1
+}
+chmod 700 $TDIR
+
+trap 'rm -f $TDIR/rlvers $TDIR/rlvers.? ; rmdir $TDIR' 0 1 2 3 6 15
+
+cat > $TDIR/rlvers.c << EOF
+#include <stdio.h>
+extern char *rl_library_version;
+
+main()
+{
+ printf("%s\n", rl_library_version ? rl_library_version : "0");
+ exit(0);
+}
+EOF
+
+opwd=`pwd`
+
+cd $TDIR || {
+ echo "${PROGNAME}: cannot cd to $TDIR" >&2
+ echo 0
+ exit 1
+}
+
+if eval ${CC} -L${RL_LIBDIR} -I${RL_INCDIR} -o $TDIR/rlvers $TDIR/rlvers.c -lreadline ${TERMCAP_LIB};
+then
+ v=`$TDIR/rlvers`
+else
+ if [ -n "$verbose" ] ; then
+ echo "${PROGNAME}: compilation failed: status $?"
+ echo "${PROGNAME}: using version 0"
+ fi
+ v=0
+fi
+
+case "$v" in
+unknown | "") echo 0 ;;
+*) echo "$v" ;;
+esac
+
+cd $opwd
+exit 0