$ make
g++ -MMD -MP -I. -std=c++20 -Wextra -Wpedantic -Wall -O3 -DASIO_STANDALONE -DUSE_ROUTING=true -D USE_LIBGLPK=true -c routing/http_wrapper.cpp -o routing/http_wrapper.o
routing/http_wrapper.cpp: In member function ‘std::string vroom::routing::HttpWrapper::send_then_receive(const std::string&) const’:
routing/http_wrapper.cpp:73:11: error: ‘io_service’ is not a member of ‘asio’; did you mean ‘use_service’?
   73 |     asio::io_service io_service;
      |           ^~~~~~~~~~
      |           use_service
routing/http_wrapper.cpp:75:21: error: ‘io_service’ was not declared in this scope
   75 |     tcp::resolver r(io_service);
      |                     ^~~~~~~~~~
routing/http_wrapper.cpp:77:26: error: ‘query’ in ‘asio::ip::tcp::resolver’ {aka ‘class asio::ip::basic_resolver<asio::ip::tcp>’} does not name a type
   77 |     const tcp::resolver::query q(_server.host, _server.port);
      |                          ^~~~~
routing/http_wrapper.cpp:80:32: error: ‘q’ was not declared in this scope
   80 |     asio::connect(s, r.resolve(q));
      |                                ^
routing/http_wrapper.cpp: In member function ‘std::string vroom::routing::HttpWrapper::ssl_send_then_receive(const std::string&) const’:
routing/http_wrapper.cpp:97:11: error: ‘io_service’ is not a member of ‘asio’; did you mean ‘use_service’?
   97 |     asio::io_service io_service;
      |           ^~~~~~~~~~
      |           use_service
routing/http_wrapper.cpp:100:52: error: ‘io_service’ was not declared in this scope
  100 |     asio::ssl::stream<asio::ip::tcp::socket> ssock(io_service, ctx);
      |                                                    ^~~~~~~~~~
routing/http_wrapper.cpp:104:26: error: ‘query’ in ‘asio::ip::tcp::resolver’ {aka ‘class asio::ip::basic_resolver<asio::ip::tcp>’} does not name a type
  104 |     const tcp::resolver::query q(_server.host, _server.port);
      |                          ^~~~~
routing/http_wrapper.cpp:106:51: error: ‘q’ was not declared in this scope
  106 |     asio::connect(ssock.lowest_layer(), r.resolve(q));
      |                                                   ^
make: *** [makefile:76: routing/http_wrapper.o] Error 1