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- // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
- // Copyright 2015-2019 Antony Polukhin.
- //
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE_1_0.txt
- // or copy at http://www.boost.org/LICENSE_1_0.txt)
- #include "../b2_workarounds.hpp"
- //[callplugcpp_tutorial3
- #include <boost/dll/import.hpp> // for import_alias
- #include <boost/make_shared.hpp>
- #include <boost/function.hpp>
- #include <iostream>
- #include "../tutorial_common/my_plugin_api.hpp"
- namespace dll = boost::dll;
- std::size_t search_for_symbols(const std::vector<boost::dll::fs::path>& plugins) {
- std::size_t plugins_found = 0;
- for (std::size_t i = 0; i < plugins.size(); ++i) {
- std::cout << "Loading plugin: " << plugins[i] << '\n';
- dll::shared_library lib(plugins[i], dll::load_mode::append_decorations);
- if (!lib.has("create_plugin")) {
- // no such symbol
- continue;
- }
- // library has symbol, importing...
- typedef boost::shared_ptr<my_plugin_api> (pluginapi_create_t)();
- boost::function<pluginapi_create_t> creator
- = dll::import_alias<pluginapi_create_t>(boost::move(lib), "create_plugin");
- std::cout << "Matching plugin name: " << creator()->name() << std::endl;
- ++ plugins_found;
- }
- return plugins_found;
- }
- //]
- int main(int argc, char* argv[]) {
- BOOST_ASSERT(argc >= 3);
- std::vector<boost::dll::fs::path> plugins;
- plugins.reserve(argc - 1);
- for (int i = 1; i < argc; ++i) {
- if (b2_workarounds::is_shared_library(argv[i])) {
- plugins.push_back(argv[i]);
- }
- }
- const std::size_t res = search_for_symbols(plugins);
- BOOST_ASSERT(res == 1);
- (void)res;
- }
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