cmake_minimum_required(VERSION 3.1)
project(compiler)

# We want C++17 for std::optional
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Find all the required packages
find_package(BISON)
find_package(FLEX)
find_package(LLVM REQUIRED CONFIG)

# Set up the flex and bison targets
bison_target(parser
    ${CMAKE_CURRENT_SOURCE_DIR}/parser.y
    ${CMAKE_CURRENT_BINARY_DIR}/parser.cpp
    COMPILE_FLAGS "-d")
flex_target(scanner
    ${CMAKE_CURRENT_SOURCE_DIR}/scanner.l
    ${CMAKE_CURRENT_BINARY_DIR}/scanner.cpp)
add_flex_bison_dependency(scanner parser)

# Find all the relevant LLVM components
llvm_map_components_to_libnames(LLVM_LIBS core x86asmparser x86codegen)

# Create compiler executable
add_executable(compiler
    definition.cpp definition.hpp
    parsed_type.cpp parsed_type.hpp
    ast.cpp ast.hpp
    llvm_context.cpp llvm_context.hpp
    type_env.cpp type_env.hpp
    env.cpp env.hpp
    type.cpp type.hpp
    error.cpp error.hpp
    binop.cpp binop.hpp
    instruction.cpp instruction.hpp
    graph.cpp graph.hpp
    global_scope.cpp global_scope.hpp
    parse_driver.cpp parse_driver.hpp
    mangler.cpp mangler.hpp
    compiler.cpp compiler.hpp
    ${BISON_parser_OUTPUTS}
    ${FLEX_scanner_OUTPUTS}
    main.cpp
)

# Configure compiler executable
target_include_directories(compiler PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
target_include_directories(compiler PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
target_include_directories(compiler PUBLIC ${LLVM_INCLUDE_DIRS})
target_compile_definitions(compiler PUBLIC ${LLVM_DEFINITIONS})
target_link_libraries(compiler ${LLVM_LIBS})