Hi John! On Sat, Jan 19, 2019 at 03:26:08PM -0500, John David Anglin wrote: > Dear Maintainer, > > The hotspot build fails on hppa and some other targets: > > [...] > /usr/bin/ld: CMakeFiles/hotspot-perfparser.dir/perfparser/app/perfunwind.cpp.o: > in function `QDataStream::Version qToLittleEndian<QDataStream::Version>(QDataStream::Version)': > /usr/include/hppa-linux-gnu/qt5/QtCore/qendian.h:168: > undefined reference to `QDataStream::Version qbswap<QDataStream::Version>(QDataStream::Version)' > collect2: error: ld returned 1 exit status > > Probably, the problem is in Qtcore. I think it is a bug in either hotspot or in the compiler. Anyway, I think it should be easy to fix it in hotspot. It currently has this line in src/corelib/serialization/qdatastream.h: qint32 dataStreamVersion = qToLittleEndian(QDataStream::Qt_DefaultCompiledVersion); Explicitly casting QDataStream::Qt_DefaultCompiledVersion to an integer type should make GCC find the right implementation. Try this: qint32 dataStreamVersion = qToLittleEndian(static_cast<qint32>(QDataStream::Qt_DefaultCompiledVersion)); -- Dmitry Shachnev
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