Compilation fail due to Qt

#1

Git master of High Fidelity fails to compile near the end. My OS is Linux openSUSE Tumbleweed, whereas my version of Qt is 5.9.2. This is the error I get in the console output:

[ 91%] Building CXX object interface/CMakeFiles/interface.dir/interface_autogen/EJRQKI7XPS/qrc_qml.cpp.o
[ 91%] Linking CXX executable interface
../libraries/ui/libui.a(mocs_compilation.cpp.o): In function `ModalDialogListener::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)':
/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/ui_autogen/UVLADIE3JM/moc_OffscreenUi.cpp:75: multiple definition of `ModalDialogListener::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)'
../libraries/ui/libui.a(OffscreenUi.cpp.o):/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/OffscreenUi.moc:237: first defined here
../libraries/ui/libui.a(mocs_compilation.cpp.o):(.data.rel.ro+0x140): multiple definition of `ModalDialogListener::staticMetaObject'
../libraries/ui/libui.a(OffscreenUi.cpp.o):(.data.rel.ro+0x40): first defined here
../libraries/ui/libui.a(mocs_compilation.cpp.o): In function `ModalDialogListener::metaObject() const':
/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/ui_autogen/UVLADIE3JM/moc_OffscreenUi.cpp:104: multiple definition of `ModalDialogListener::metaObject() const'
../libraries/ui/libui.a(OffscreenUi.cpp.o):/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/OffscreenUi.moc:256: first defined here
../libraries/ui/libui.a(mocs_compilation.cpp.o): In function `ModalDialogListener::qt_metacast(char const*)':
/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/ui_autogen/UVLADIE3JM/moc_OffscreenUi.cpp:109: multiple definition of `ModalDialogListener::qt_metacast(char const*)'
../libraries/ui/libui.a(OffscreenUi.cpp.o):/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/OffscreenUi.moc:261: first defined here
../libraries/ui/libui.a(mocs_compilation.cpp.o): In function `ModalDialogListener::qt_metacall(QMetaObject::Call, int, void**)':
/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/ui_autogen/UVLADIE3JM/moc_OffscreenUi.cpp:117: multiple definition of `ModalDialogListener::qt_metacall(QMetaObject::Call, int, void**)'
../libraries/ui/libui.a(OffscreenUi.cpp.o):/home/mircea/Games/SecondLife/HighFidelity_GIT/build/libraries/ui/OffscreenUi.moc:269: first defined here
../libraries/ui/libui.a(OffscreenUi.cpp.o): In function `AssetDialogListener::AssetDialogListener(QQuickItem*)':
OffscreenUi.cpp:(.text._ZN19AssetDialogListenerC2EP10QQuickItem[_ZN19AssetDialogListenerC5EP10QQuickItem]+0x27): undefined reference to `vtable for AssetDialogListener'
../libraries/ui/libui.a(OffscreenUi.cpp.o): In function `AssetDialogListener::~AssetDialogListener()':
OffscreenUi.cpp:(.text._ZN19AssetDialogListenerD2Ev[_ZN19AssetDialogListenerD5Ev]+0xf): undefined reference to `vtable for AssetDialogListener'
collect2: error: ld returned 1 exit status
make[2]: *** [interface/CMakeFiles/interface.dir/build.make:3402: interface/interface] Error 1
make[1]: *** [CMakeFiles/Makefile2:3192: interface/CMakeFiles/interface.dir/all] Error 2
make: *** [Makefile:152: all] Error 2
#2

A quick look around on google seems to indicate this is often caused by stale build files being aroundā€¦ just in case, delete your build directory and start fresh with a new cmake + make cycle. Unless, of course, youā€™ve already tried that.

#3

Just in case you do get it to compile you will likely run into issues trying to run. libnvtt etc etc etc. I created a clean Tumbleweed install on a VM, figured out all the packages, compiled and see all the carnage that ensues even if you succeed. Yes - thereā€™s solutions to all, but, itā€™s now 12:23AM and sleep calls. Will add some more tomorrow on how to work around.

#4

I will try with a fresh build directory next. I only attempted a ā€˜make cleanā€™ followed by deleting CMakeCache.txt, I remember now that this might not always be enough.

I remember when Hifi last compiled (months ago) that it froze and / or crashed on startup. I have no idea if those issues were fixed since, but from what youā€™re describing thatā€™s a negative. This is sad, I miss being able to run it on my Linux machine with free video drivers (Mesa)ā€¦ still compiling it successfully is the first step in getting closer to that.

#5

High Fidelity compiles successfully with a fresh build directory. Obviously interface doesnā€™t run due to various other issues, but at least compilation is now solved.

#6

Iā€™ll try to give some info on how to fix remainder later - keep in mind, you probably wonā€™t love my hacky methods to fix up library references, but, after fighting with making this work consistently on Linux for 3 yearsā€¦ itā€™s what works and works despite HiFi constantly making subtle to not so subtle changes to how compiles work that routinely break things.

#7

Thank you. You can send me the info in PM if you wish. Iā€™d rather not open another thread until I make sure Iā€™m not missing something I could solve.

#8

Take a look at;

Thereā€™s a ā€œgenericā€ build script in there that should answer any remaining issues. Iā€™ve gotten Interface, assignment-client and domain-server to compile/run under Tumbleweed. Nowā€¦ as to whether or not Interface will actually be usable with your hardware/driver setup, no clue and outside what I have anything to do with.