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#!/bin/sh
YACC="$1"
SRC="$2"
DEST="$3"
dir=`dirname $SRC`
file=`basename $SRC`
base=`basename $SRC .y`
if [ -z "$YACC" ]; then
echo "yacc not found"
exit;
fi
if [ -r $DEST ]; then
if [ x`find $SRC -newer $DEST -print` != x$SRC ]; then
exit;
fi
fi
TOP=`pwd`
if cd $dir && $YACC -d $file; then
sed -e "/^#/!b" -e "s|y\.tab\.h|$base.h|" y.tab.h > $base.h
sed '/^#/ s|y\.tab\.c|$base.c|' y.tab.c > $base.c
rm -f y.tab.c y.tab.h
fi
cd $TOP
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