配置插件的配置文件：pluginLibraryList.json

{
    "Windows": [
        "MRCommonPlugins"
    ],
    "Linux": [
        "MRCommonPlugins"
    ]
}

获得插件列表

std::optional<std::vector<std::filesystem::path>> getPluginLibraryList()
{
    auto resDir = GetResourcesDirectory();
    auto libsDir = GetLibsDirectory();
    auto pluginLibraryList = resDir / "pluginLibraryList.json";
    Json::Value pluginLibraryListJson;
    std::error_code ec;
    if ( std::filesystem::exists( pluginLibraryList, ec ) )
    {
        auto readRes = deserializeJsonValue( pluginLibraryList );
        if ( !readRes.has_value() )
            spdlog::error( readRes.error() );
        else
            pluginLibraryListJson = readRes.value();
#if _WIN32
        if ( pluginLibraryListJson["Windows"].isArray() )
            pluginLibraryListJson = pluginLibraryListJson["Windows"];
#else
        if ( pluginLibraryListJson["Linux"].isArray() )
            pluginLibraryListJson = pluginLibraryListJson["Linux"];
#endif
        else
        {
            spdlog::error( "Json has no Value for current OS!" );
            return std::nullopt;
        }
    }
    else
        spdlog::warn( "Failed to open json config file " + utf8string( pluginLibraryList ) + " with " + systemToUtf8( ec.message() ) );

    if ( pluginLibraryListJson.isArray() )
    {
        std::vector<std::filesystem::path> res;
        for ( auto& v : pluginLibraryListJson )
        {
#if _WIN32
            res.push_back( libsDir / ( v.asString() + ".dll" ) );
#elif defined __APPLE__
            res.push_back( libsDir / ( "lib" + v.asString() + ".dylib" ) );
#else
            res.push_back( libsDir / ( "lib" + v.asString() + ".so" ) );
#endif
        }
        return res;
    }
    else
    {
        spdlog::warn( "Json file with viewer plugin library list was not found or corrupted. Empty list returned." );
        return {};
    }
}

加载插件

void ViewerSetup::setupExtendedLibraries() const
{
    const auto pluginLibraryList = getPluginLibraryList();
    if ( !pluginLibraryList )
        return;
    for (const auto& pluginLib : *pluginLibraryList)
    {
#if _WIN32
        auto result = LoadLibraryW( pluginLib.wstring().c_str() );
        if ( !result )
        {
            auto error = GetLastError();
            spdlog::error( "Load library {} error: {}", utf8string( pluginLib ), error );
            assert( false );
        }
#else
        void* result = dlopen( utf8string( pluginLib ).c_str(), RTLD_LAZY );
        if ( !result )
        {
            auto error = dlerror();
            spdlog::error( "Load library {} error: {}", utf8string( pluginLib ), error );
            assert( false );
        }
#endif
    }
}