Control: reopen -1 The build still fails with a different error:
/usr/bin/c++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -Woverloaded-virtual -Wl,-z,relro -Wl,-z,now CMakeFiles/sfxr-qt.dir/sfxr-qt_autogen/mocs_compilation.cpp.o CMakeFiles/sfxr-qt.dir/ui/main.cpp.o CMakeFiles/sfxr-qt.dir/ui/Generator.cpp.o CMakeFiles/sfxr-qt.dir/qrc_qml.cpp.o -o sfxr-qt libsfxr-qt-lib.a /usr/lib/s390x-linux-gnu/libQt5Widgets.so.5.15.2 /usr/lib/s390x-linux-gnu/libQt5Quick.so.5.15.2 -lSDL /usr/lib/s390x-linux-gnu/libQt5Gui.so.5.15.2 /usr/lib/s390x-linux-gnu/libQt5QmlModels.so.5.15.2 /usr/lib/s390x-linux-gnu/libQt5Qml.so.5.15.2 /usr/lib/s390x-linux-gnu/libQt5Network.so.5.15.2 /usr/lib/s390x-linux-gnu/libQt5Core.so.5.15.2
/usr/bin/ld: libsfxr-qt-lib.a(SoundIO.cpp.o): in function `bool qToLittleEndian<bool>(bool)': /usr/include/s390x-linux-gnu/qt5/QtCore/qendian.h:209: undefined reference to `bool qbswap<bool>(bool)' collect2: error: ld returned 1 exit status