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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -eu
CONFIG="${1:?Missing path to config.h}"
TARGET="${2:?Missing target m4 file}"
if [ ! -f "$CONFIG" ]; then
echo "$CONFIG not found."
exit 2
fi
if [ ! -f "$TARGET" ]; then
echo "$TARGET not found."
exit 3
fi
DEFINES=()
mapfile -t DEFINES < <(awk '$1 == "#define" && $3 == "1" { printf "-D%s\n", $2 }' "$CONFIG")
m4 -P "${DEFINES[@]}" "$TARGET"
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