[PyQt] PyQt5 build failure in sipQtWebKitWidgestQWebInspector: qprinter.h not found

[Tim Smith]

Homebrew OS X builds of pyqt5 are failing with the error shown here:
https://gist.github.com/anonymous/6b71c76a3af36b4157f4#file-02-make-L864-L868

The proximal cause of the failure is here:

/Applications/Xcode-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++
-c -pipe -O2 -isysroot
/Applications/Xcode-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk
-mmacosx-version-min=10.10 -Wall -W -fPIC -DSIP_PROTECTED_IS_PUBLIC
-Dprotected=public -DQT_NO_DEBUG -DQT_PLUGIN -DQT_WEBKITWIDGETS_LIB
-DQT_WEBKIT_LIB -DQT_WIDGETS_LIB -DQT_NETWORK_LIB -DQT_GUI_LIB
-DQT_CORE_LIB -I/usr/local/Cellar/qt5/5.3.2/mkspecs/macx-clang -I. -I.
-I/usr/local/Cellar/sip/4.16.1/include
-I/usr/local/Cellar/python3/3.4.1_1/Frameworks/Python.framework/Versions/3.4/include/python3.4m
-I/usr/local/Cellar/qt5/5.3.2/lib/QtWebKitWidgets.framework/Versions/5/Headers
-I/usr/local/Cellar/qt5/5.3.2/lib/QtWebKit.framework/Versions/5/Headers
-I/usr/local/Cellar/qt5/5.3.2/lib/QtWidgets.framework/Versions/5/Headers
-I/usr/local/Cellar/qt5/5.3.2/lib/QtNetwork.framework/Versions/5/Headers
-I/usr/local/Cellar/qt5/5.3.2/lib/QtGui.framework/Versions/5/Headers
-I/usr/local/Cellar/qt5/5.3.2/lib/QtCore.framework/Versions/5/Headers
-I. -I/Applications/Xcode-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers
-I/Applications/Xcode-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/AGL.framework/Headers
-F/usr/local/Cellar/qt5/5.3.2/lib -o sipQtWebKitWidgetsQWebInspector.o
sipQtWebKitWidgetsQWebInspector.cpp
sip/QtPrintSupport/qprinter.sip:28:10: fatal error: 'qprinter.h' file not found
#include <qprinter.h>
         ^
1 error generated.

qprinter.h is in the QtPrintSupport framework, and its includes are
not added to the compiler’s include search path for QtWebKitWidgets.

An issue discovering qprinter.h was reported here in March:
http://www.riverbankcomputing.com/pipermail/pyqt/2014-March/033970.html
and a superficially similar problem to that issue is observed here, on
Windows: https://github.com/pyqt/pyqt5/issues/1

I’m not sure that either failure has the same root cause as this issue.

Modifying configure.py such that MODULE_METADATA[‘QtWebKitWidgets’] =
ModuleMetadata(qmake_QT=[‘webkitwidgets’], [‘printsupport’]) instead
of ModuleMetadata(qmake_QT=[‘webkitwidgets’]) resolves the build
failure.

Should this be necessary? I am surprised that other distributions have
not encountered this issue because I don’t see that Homebrew is doing
anything strange while building qt5 or PyQt5.

Advice would be appreciated, either here or at
https://github.com/Homebrew/homebrew/pull/32419.

Many thanks!
Tim Smith