# This file is a part of the UMSKT Project
#
# Copyleft (C) 2019-2023 UMSKT Contributors (et.al.)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# @FileCreated by Neo on 06/19/2023
# @Maintainer Neo

# Stage 1: Install Prerequisites
FROM alpine:latest as prerequisites

# Stage 1: Install build dependencies
RUN apk add --no-cache \
    autoconf \
	automake \
	bash \
    bison \
    build-base \
	clang \
	cmake \
	coreutils \
	curl \
	elfutils-dev \
	findutils \
    git \
	gawk \
    flex \
	libelf \
	libslirp-dev \
    linux-headers \
	nasm \
	sed \
    slang-dev \
	texinfo \
	unzip \
	zlib-dev


FROM prerequisites as djgpp

WORKDIR /tmp

# Stage 2: compile djgpp for muslc
ENV DJGPP_PREFIX=/djgpp BUILD_VER=12.2.0-i386
RUN git clone https://github.com/UMSKT/build-djgpp.git djgpp \
    && cd djgpp \
    && chmod +x script/$BUILD_VER \
    && ./build-djgpp.sh $BUILD_VER \
    && rm -rf /tmp/djgpp

# Stage 3: compile watt32 for djgpp-i386
FROM djgpp as watt32
WORKDIR /djgpp
ENV WATT_ROOT=/djgpp/watt32 DJGPP_PREFIX=i386-pc-msdosdjgpp
SHELL ["/bin/bash", "-c"]
RUN git clone https://github.com/UMSKT/Watt-32.git watt32 \
    && cd watt32/util \
    && make clean && make linux \
    && cd ../src \
    && source /djgpp/setenv \
    && ./configur.sh djgpp \
    && make -f djgpp.mak \
    && ln -s /djgpp/watt32/lib/libwatt.a /djgpp/lib

# Stage 4: compile OpenSSL for djgpp-i386/watt32
FROM watt32 as openssl
WORKDIR /tmp
SHELL ["/bin/bash", "-c"]
RUN git clone https://github.com/umskt/openssl.git openssl \
    && cd openssl \
    && source /djgpp/setenv \
    && ./Configure no-threads -DOPENSSL_DEV_NO_ATOMICS --prefix=/djgpp DJGPP \
    && make && make install

# Stage 5: compile UMSKT
FROM openssl as build

WORKDIR /src
COPY . /src

ENV CC=/djgpp/bin/i386-pc-msdosdjgpp-gcc CXX=/djgpp/bin/i386-pc-msdosdjgpp-g++ PKG_CONFIG_PATH=/djgpp/lib/pkgconfig VERBOSE=1
SHELL ["/bin/bash", "-c"]
# Build UMSKT from the local directory
RUN mkdir /src/build \
  && cd /src/build \
  && source /djgpp/setenv \
  && cmake -DDJGPP_WATT32=${WATT_ROOT}/lib/libwatt.a .. \
  && make

CMD ["bash"]

# Stage 6: Output
FROM scratch as output

COPY --from=build /src/build/umskt.exe /umskt.exe

# invoke via
# docker build -f Dockerfile.djgpp  -o type=tar,dest=umskt-dos.tar .