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|
#! /bin/sh
#
# rlvers.sh -- run a program that prints out the readline version number
# using locally-installed readline libraries
#
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
|
