Build with official Qt binary installer fails #14723

My Linux has system-wide Qt 5.9.5. For testing purpose I'm trying to build Bitcoin Core against other Qt version which is installed from the official Qt's site (e.g., Qt 5.10.1):

export PKG_CONFIG_PATH=/home/hebasto/Qt/5.10.1/gcc_64/lib/pkgconfig
./configure --with-gui=qt5
make

It produces weird linker's error related to Qt itself:

  CXXLD    qt/test/test_bitcoin-qt
qt/test/qt_test_test_bitcoin_qt-addressbooktests.o: In function `(anonymous namespace)::EditAddressAndSubmit(EditAddressDialog*, QString const&, QString const&, QString) [clone .constprop.863]':
/home/hebasto/Qt/5.10.1/gcc_64/include/QtTest/qtest.h:70: undefined reference to `QTest::toPrettyUnicode(QStringView)'
/home/hebasto/Qt/5.10.1/gcc_64/include/QtTest/qtest.h:70: undefined reference to `QTest::toPrettyUnicode(QStringView)'
...
Makefile:4034: recipe for target 'qt/test/test_bitcoin-qt' failed
...

What am I doing wrong?

Not sure, but it looks like the signature of that function changed between 5.9 and 5.10: https://doc.qt.io/qt-5.9/qtest.html#toPrettyUnicode https://doc.qt.io/archives/qt-5.10/qtest.html#toPrettyUnicode

Maybe there's something that you can piece together given the info here?: https://github.com/bitcoin/bitcoin/tree/master/depends https://github.com/bitcoin/bitcoin/blob/master/depends/packages/qt.mk

Here is solution: https://gist.github.com/hebasto/4c571f6b368ab2b0d75b94aaf4bb512a

https://bugreports.qt.io/browse/QTBUG-73151