Bash script to concatenate multiple header/impl c files and main.c into one single main file

create_prod_main.sh

#!/bin/bash
# Script to create prod version of project (concat all deps in one single file)

cd "$(dirname "$0")"

rm -f main_prod.c

tempfile=$(mktemp)
tempmain=$(mktemp)
cat main.c > "$tempmain"

IFS=$'\n'
deps=($(sed -nE 's!#include *\"([a-zA-Z_]+)\.h\"!\1!p' < main.c))
for dep in "${deps[@]}"; do
    echo "Found $dep"
    cat "$dep.h" >> "$tempfile"
    sed "s/#include \"$dep.h\"//" < "$dep.c" >> "$tempfile"
    sed -i "s/#include \"$dep.h\"//" "$tempmain"
done
sed -i "s/#define DEBUG//" "$tempmain"
touch main_prod.c
echo "//This file was created using create_prod_version.sh script" >> main_prod.c
cat "$tempfile" >> main_prod.c
cat "$tempmain" >> main_prod.c
rm $tempfile
rm $tempmain