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#!/bin/sh
set -eu
CONFIG=$1
TARGET=$2
if [ $# -ne 2 ]; then
echo 'Invalid number of arguments.'
exit 1
fi
if [ ! -f $CONFIG ]; then
echo "$CONFIG not found."
exit 2
fi
if [ ! -f $TARGET ]; then
echo "$TARGET not found."
exit 3
fi
DEFINES=$(awk '$1 == "#define" && $3 == "1" { printf "-D%s ", $2 }' $CONFIG)
m4 -P $DEFINES $TARGET
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