sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:304:36: error: ‘numeric_limits’ is not a member of ‘std’
  304 |                 case 1: ma = (std::numeric_limits<unsigned char>::max)();
      |                                    ^~~~~~~~~~~~~~
sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:304:51: error: expected primary-expression before ‘unsigned’
  304 |                 case 1: ma = (std::numeric_limits<unsigned char>::max)();
      |                                                   ^~~~~~~~
sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:304:51: error: expected ‘)’ before ‘unsigned’
  304 |                 case 1: ma = (std::numeric_limits<unsigned char>::max)();
      |                              ~                    ^~~~~~~~
      |                                                   )
sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:306:36: error: ‘numeric_limits’ is not a member of ‘std’
  306 |                 case 2: ma = (std::numeric_limits<unsigned short>::max)();
      |                                    ^~~~~~~~~~~~~~
sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:306:51: error: expected primary-expression before ‘unsigned’
  306 |                 case 2: ma = (std::numeric_limits<unsigned short>::max)();
      |                                                   ^~~~~~~~
sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:306:51: error: expected ‘)’ before ‘unsigned’
  306 |                 case 2: ma = (std::numeric_limits<unsigned short>::max)();
      |                              ~                    ^~~~~~~~
      |                                                   )
sources/libcpp83gts_callback_and_action/fl_gl_image_view.cpp:383:33: warning: format not a string literal and no format arguments [-Wformat-security]
  383 |                         fl_alert( err.c_str() );
      |                         ~~~~~~~~^~~~~~~~~~~~~~~
make[1]: *** [Makefile:2792: sources/libcpp83gts_callback_and_action/libgts_la-fl_gl_image_view.lo] Error 1