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#!/bin/bash

cc=gcc
cflags=(-Wall -Wextra -std=c99 -O2)
ldflags=(-lm)

platform=gl
debug=
run=
clean=
tags=

if [ -z "$RUN_CMD" ]; then
    RUN_CMD=./
fi

for flag in $@; do
    case "$flag" in
        '-run') run=true ;;
        '-debug') debug=true ;;
        '-clean') clean=true ;;
        '-use-x11') platform=x11 ;;
        '-use-gl') platform=gl ;;
    esac
done

if [ ! -z "$clean" ]; then
    rm demonchime
    rm libteensy.so
    exit
fi

[ ! -z "$debug" ] && cflags+=(-g -ggdb -rdynamic)

teensy_cflags=(${cflags[@]} -fPIC -Iteensy -Iplatform/$platform)
[ ! -z "$debug" ] && teensy_cflags+=(-DTEENSY_DEBUG)
teensy_ldflags=(${ldflags[@]})

case "$platform" in
    'x11')
        teensy_ldflags+=(-lX11)
        ;;
    'gl')
        teensy_ldflags+=(-lglfw)
        ;;
esac

dc_cflags=(${cflags[@]} -Iteensy -Idc)
[ ! -z "$debug" ] && teensy_cflags+=(-DDC_DEBUG)
dc_ldflags=(${ldflags[@]} -L. -lteensy)

dc_src=$(find dc -name '*.c')
teensy_src=$(find teensy -name '*.c')
platform_src=$(find platform/$platform -name '*.c')

echo -e "dc:\t\t$(tr '\n' ' ' <<< "$dc_src")"
echo -e "teensy:\t\t$(tr '\n' ' ' <<< "$teensy_src")"
echo -e "platform:\t$(tr '\n' ' ' <<< "$platform_src")"

echo -e "building libteensy\t: ${teensy_ldflags[@]} ${teensy_cflags[@]}"
$cc -shared -o libteensy.so \
    ${teensy_ldflags[@]} \
    ${teensy_cflags[@]} \
    ${teensy_src[@]} ${platform_src[@]} || exit 1

echo -e "building demonchime\t: ${dc_ldflags[@]} ${dc_cflags[@]}"
$cc -o demonchime \
    ${dc_ldflags[@]} \
    ${dc_cflags[@]} \
    ${dc_src[@]} || exit 1

[ $? -eq 0 ] && [ ! -z "$run" ] && LD_LIBRARY_PATH=. ${RUN_CMD}demonchime