option(PL_VERILATOR "PL_VERILATOR" OFF)

if(PL_VERILATOR OR PL_SIMULATOR OR BUILD_ALL_PLUGINS)

    set (PATH_TO_VERILATOR_EXECUTABLE "")
    find_package(verilator HINTS $ENV{VERILATOR_ROOT})
    if(verilator_FOUND)
        set (PATH_TO_VERILATOR_EXECUTABLE "${verilator_DIR}/bin/")
    endif(verilator_FOUND)

    set (PATH_TO_RAPIDJSON_INCLUDEDIR ${RAPIDJSON_INCLUDEDIR})
    if (NOT PATH_TO_RAPIDJSON_INCLUDEDIR)
        find_package(RapidJSON REQUIRED)
        if(RapidJSON_FOUND AND NOT TARGET RapidJSON::RapidJSON)
            if(NOT RAPIDJSON_INCLUDEDIR)
                set(RAPIDJSON_INCLUDEDIR ${RAPIDJSON_INCLUDE_DIRS})
            endif()

            # fix for macOS if most recent version
            if(NOT RAPIDJSON_INCLUDEDIR)
                set(RAPIDJSON_INCLUDEDIR ${RapidJSON_INCLUDE_DIRS})
            endif()
            set (PATH_TO_RAPIDJSON_INCLUDEDIR ${RAPIDJSON_INCLUDEDIR})
        endif(RapidJSON_FOUND)
    endif()

    file(WRITE "${CMAKE_CURRENT_SOURCE_DIR}/include/verilator/path_to_verilator_executable.h" "\
#pragma once\n\
\n\
const char* path_to_verilator_executable = \"${PATH_TO_VERILATOR_EXECUTABLE}\";\n\
const char* path_to_rapidjson_includedir = \"${PATH_TO_RAPIDJSON_INCLUDEDIR}\";\n")

    file(GLOB_RECURSE VERILATOR_INC ${CMAKE_CURRENT_SOURCE_DIR}/include/*.h)
    file(GLOB_RECURSE VERILATOR_SRC ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp)
    file(GLOB_RECURSE VERILATOR_PYTHON_SRC ${CMAKE_CURRENT_SOURCE_DIR}/python/*.cpp)

    enable_cxx_compile_option_if_supported("-O1" "Perf" "PUBLIC")
    enable_cxx_compile_option_if_supported("-g" "Perf" "PUBLIC")
    enable_cxx_compile_option_if_supported("-fno-inline-functions" "Perf" "PUBLIC")
    enable_cxx_compile_option_if_supported("-fno-inline-functions-called-once" "Perf" "PUBLIC")
    enable_cxx_compile_option_if_supported("-fno-optimize-sibling-calls" "Perf" "PUBLIC")

    hal_add_plugin(verilator
                   SHARED
                   HEADER ${VERILATOR_INC}
                   SOURCES ${VERILATOR_SRC} ${VERILATOR_PYTHON_SRC}
                   PYDOC SPHINX_DOC_INDEX_FILE ${CMAKE_CURRENT_SOURCE_DIR}/documentation/verilator.rst
                   LINK_LIBRARIES PUBLIC netlist_simulator_controller verilog_writer)


    if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
        add_sanitizers(verilator)
    endif()
    
endif()