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#!/bin/sh
LEX="$1"
SRC="$2"
DEST="$3"
dir=`dirname $SRC`
file=`basename $SRC`
base=`basename $SRC .l`
if [ -z "$LEX" ]; then
echo "lex not found - not regenerating $DEST"
exit;
fi
if [ -r $DEST ]; then
if [ x`find $SRC -newer $DEST -print` != x$SRC ]; then
exit;
fi
fi
TOP=`pwd`
if cd $dir && $LEX $file; then
if [ -r $base.yy.c ];then
# we must guarantee that config.h comes first
echo "#include \"config.h\"" > $base.c
sed '/^#/ s|$base.yy\.c|$DEST|' $base.yy.c >> $base.c
rm -f $base.yy.c
fi
fi
cd $TOP
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