depends -sub CXX gcc  &&

#
# Fix Bug #8283
#
if  [  "$LIBUSB_DOC"  ==  '--enable-build-docs'  ];  then
  depends  docbook-dsssl          &&
  depends  docbook-sgml-dtd
fi  &&

optional_depends  doxygen                           \
                  ""                                \
                  ""                                \
                  "to build C++ API documentation"