A recent update from boost-1.72 (working) to boost-1.73 (not working) resulting in 4.0.6.0 to no longer build, due to undefined Bind placeholders, when configured "--with-gui=yes". Compiling just the CLI version worked fine. Adding
#include <boost/bind.hpp>
into
src/qt/clientmodel.cpp
src/qt/walletmodel.cpp
seems to work and results in an operational QT client (see attched patch).
boost_placeholders.patch.txt