# SPDX-License-Identifier: Unlicense

cmake_minimum_required(VERSION 3.16)
project(emulator)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(CMAKE_EXPORT_COMPILE_COMMANDS True)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=address -fno-omit-frame-pointer -O1")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-nested-anon-types -Wall -Wextra -pedantic")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions -fno-rtti") # Speed up compilation
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address -fno-omit-frame-pointer -O1")
set(CMAKE_LINKER_FLAGS_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG} -fsanitize=address -fno-omit-frame-pointer")

set(emulator_sources
    bus.cpp
    emulator.cpp
    gdbremote_parser.cpp
    graphics.cpp
    m68k_debugging.cpp
    vdp.cpp
    )
set(musashi_m68k_sources
    musashi-m68k/m68kcpu.c
    musashi-m68k/m68kdasm.c
    musashi-m68k/softfloat/softfloat.c
    ${CMAKE_CURRENT_BINARY_DIR}/m68kops.c
    )

add_executable(m68kmake musashi-m68k/m68kmake.c)
target_include_directories(m68kmake PRIVATE musashi-m68k)
add_custom_command(
    OUTPUT  m68kops.c m68kops.h
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/musashi-m68k
    COMMAND ${CMAKE_CURRENT_BINARY_DIR}/m68kmake
              ${CMAKE_CURRENT_BINARY_DIR}
    DEPENDS
        musashi-m68k/m68k_in.c
        ${CMAKE_CURRENT_BINARY_DIR}/m68kmake
)
add_library(musashi_m68k OBJECT ${musashi_m68k_sources})
target_include_directories(musashi_m68k PRIVATE
    musashi-m68k
    ${CMAKE_CURRENT_BINARY_DIR}
    )

# TODO make SDL2 optional for headless mode
find_package(SDL2 REQUIRED)

add_executable(emulator ${emulator_sources})
target_link_libraries(emulator musashi_m68k)
# TODO make SDL2 optional for headless mode
target_include_directories(emulator PRIVATE ${SDL2_INCLUDE_DIRS})
# TODO make SDL2 optional for headless mode
target_link_libraries(emulator ${SDL2_LIBRARIES})
target_compile_definitions(emulator PRIVATE
    DEBUG_TRACE_INSTRUCTIONS=0
    DEBUG_TRACE_GDB_REMOTE=0
    DEBUG_TRACE_VDP_ACCESS=1
    HAS_GRAPHICS=1
    )

## Target for GDB Remote Debugging protocol implementation testing
#add_executable(gdbremote
#    gdbremote.cpp
#    gdbremote_parser.cpp
#    )

include_directories(
    .
    )