QtCharts 'umbrella' header cannot be included?

With version 5.7 the code below was valid:

#include <QtCharts>

QT_CHARTS_USE_NAMESPACE

...... skipped

So I was just including some 'top-level' header, the one that includes everything else. Now with this include on macOS I have:

In file included from ../Qt5.8.0-beta/5.8/clang_64/lib/QtCharts.framework/Headers/QtCharts:5:
../Qt5.8.0-beta/5.8/clang_64/lib/QtCharts.framework/Headers/chartsnamespace.h:36:1: error: expected namespace name
QT_CHARTS_USE_NAMESPACE
^
../Qt5.8.0-beta/5.8/clang_64/lib/QtCharts.framework/Headers/qchartglobal.h:62:51: note: expanded from macro 'QT_CHARTS_USE_NAMESPACE'

1. define QT_CHARTS_USE_NAMESPACE using namespace QT_CHARTS_NAMESPACE;
   ^
   ../Qt5.8.0-beta/5.8/clang_64/lib/QtCharts.framework/Headers/qchartglobal.h:57:29: note: expanded from macro 'QT_CHARTS_NAMESPACE'
   #define QT_CHARTS_NAMESPACE QtCharts
   ^
   1 error generated.
   make: *** [dashboardwindow.o] Error 1
   11:59:10: The process "/usr/bin/make" exited with co

Is it documented somewhere, am I missing something?