optional_depends slang "" "--disable-slang" "to build support for slang output"    &&
optional_depends imlib2 "" "--disable-imlib2" "to open not only BMP files"         &&
optional_depends doxygen "" "--disable-doc" "to generate documentation"            &&
optional_depends MESA "" "--disable-gl" "for OpenGL support"                     &&
optional_depends ncurses "" "--disable-ncurses" "Enable ncurses graphics support?" &&
optional_depends libx11 "" "--disable-x11" "Enable X11 support?"                   &&
optional_depends GLUT "" "" "Enable GLUT support?"                                 &&
optional_depends CSHARP "" "--disable-csharp" "Enable C-Sharp bindings?"           &&
optional_depends JAVA "" "--disable-java" "Enable JAVA bindings?"                  &&
optional_depends -sub CXX gcc  "" "--disable-cxx" "Enable C++ bindings?"                    &&
optional_depends PYTHON "" "--disable-python" "Enable Python bindings?"            &&
optional_depends RUBY "" "--disable-ruby" "Enable Ruby bindings?"                  &&
optional_depends pango "" "" "Enable pango use?"