[gentoo-user] Re: Qt 4 programs segfault on startup
Peter Gille wrote: On Mon, Nov 10, 2008 at 1:02 AM, Nikos Chantziaras [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Peter Gille wrote: Hello list, All of the programs on my computer using qt4 segfaults on startup. Did you try revdep-rebuild? Yes. The only broken binaries I have are from virtualbox, which shouldn't affect anything. emerge @preserved-rebuild only showed quake3 as broken. I have already re-emerged those two anyway. Did you check if the programs in question really do depend only on Qt4? Try the ldd tool to see the libs a binary uses. I do have -qt4 in the USE flags though. Try that and see how many packages this would rebuild (emerge -pDN world). Yeah, this is pretty much shotgun debugging, but it might point to the culprit :P
Re: [gentoo-user] Re: Qt 4 programs segfault on startup
On Mon, Nov 10, 2008 at 6:51 PM, Nikos Chantziaras [EMAIL PROTECTED] wrote: Peter Gille wrote: On Mon, Nov 10, 2008 at 1:02 AM, Nikos Chantziaras [EMAIL PROTECTED]mailto: [EMAIL PROTECTED] wrote: Peter Gille wrote: Hello list, All of the programs on my computer using qt4 segfaults on startup. Did you try revdep-rebuild? Yes. The only broken binaries I have are from virtualbox, which shouldn't affect anything. emerge @preserved-rebuild only showed quake3 as broken. I have already re-emerged those two anyway. Did you check if the programs in question really do depend only on Qt4? Try the ldd tool to see the libs a binary uses. I do have -qt4 in the USE flags though. Try that and see how many packages this would rebuild (emerge -pDN world). Yeah, this is pretty much shotgun debugging, but it might point to the culprit :P I tried this, and compared the list to the list of packages with files in /usr/lib64/qt4/plugins/ since I had read that some people had had similar problems with files there. app-i18n/uim-1.5.4-r1 was one of the packages and when I re-emerged it with USE=-qt4 it appears that programs start again. So thank you for fixing it. However, i use this program to input japanese characters in some of the documents I write. Is anyone aware of any other input systems which can input japanese? Or will I still be able to input japanese into qt4 programs? regards / peter
Re: [gentoo-user] Re: Qt 4 programs segfault on startup
On Mon, Nov 10, 2008 at 1:02 AM, Nikos Chantziaras [EMAIL PROTECTED] wrote: Peter Gille wrote: Hello list, All of the programs on my computer using qt4 segfaults on startup. Did you try revdep-rebuild? Yes. The only broken binaries I have are from virtualbox, which shouldn't affect anything. emerge @preserved-rebuild only showed quake3 as broken. I have already re-emerged those two anyway. / peter
[gentoo-user] Re: Qt 4 programs segfault on startup
Peter Gille wrote: Hello list, All of the programs on my computer using qt4 segfaults on startup. Did you try revdep-rebuild?
Re: [gentoo-user] Re: QT 4
On 17 March 2006 18:48, James wrote: Hello Uwe, So when will we see KDE-4? My personal opinion? At the earliest end of this year - but honestly, I doubt it. More probably, there will be a a developer alpha or some such by the end of 2006. One with a stabilised API but not necessarily feature complete or ready for production. KDE did the same thing with version 2 to give application developers a chance to port their apps to the new framework. I expect KDE4 somewhen first half of 2007. That's personal opinion. There isn't any real roadmap yet. A group is coallescing together to develop a SCADA package and associated tools, much like National Instrument's Lookout, which is part of Labview. Would you be willing to provide some QT4 architectural issues advise, as we formalize a formal plan? IMO, Qt's help with their classes overview and their tutorials is first-class documentation. If you have specific questions we can take it from there. But I must admit I haven't done much with Qt4 personally yet. Graphical creation of industrial devices, such as valves, pumps, tanks, guages and many types of machines and instruments, with animation and inserts of actual equipment pictures, all in a SCADA package is of keen interest to this development effort. If any other Gentoo-users have a keen interest in remote controls and SCADA tools sililar to National Intruments Labview, drop me a line with a brief message about your interests. SNMPv3 and many industrial protocols, such as modbusTCP will be supported. Sounds interesting. Uwe -- Why do consumers keep buying products they will live to curse? -- gentoo-user@gentoo.org mailing list
[gentoo-user] Re: QT 4
Uwe Thiem uwix at iway.na writes: Just out of interest how far along is qt4? Last time I looked the next major release of kde *might* be using it, if it becomes stable in time. Is this still the case? The current version is Qt-4.1.1 AFAIK and it's pretty stable. KDE4 will be based on Qt4, no if. Hello Uwe, So when will we see KDE-4? A group is coallescing together to develop a SCADA package and associated tools, much like National Instrument's Lookout, which is part of Labview. Would you be willing to provide some QT4 architectural issues advise, as we formalize a formal plan? Graphical creation of industrial devices, such as valves, pumps, tanks, guages and many types of machines and instruments, with animation and inserts of actual equipment pictures, all in a SCADA package is of keen interest to this development effort. If any other Gentoo-users have a keen interest in remote controls and SCADA tools sililar to National Intruments Labview, drop me a line with a brief message about your interests. SNMPv3 and many industrial protocols, such as modbusTCP will be supported. James -- gentoo-user@gentoo.org mailing list
[gentoo-user] Re: QT 4
Dmitry S. Makovey dmitry at athabascau.ca writes: since packages you use (I assume KDE etc.) are not using qt4 (i.e. require specifically qt3 branch) portage doesn't find any reasons to bump version of qt. AFAIR Qt is a slotted package and you can safely go ahead and do emerge =x11-libs/qt-4.1.1 but you packages wouldn't use it. Ok this kinda makes sense. But what exactly is a 'slotted package', how do I determine when a packages is slotted, and where do I read more about 'slotted'? I see this term used ofen, but, really have no clue exactly what slotted means or if it has various meanings based on the context of it's (verbiage) usage. I'm looking at participating in developing software for remote control of hardware, SCADA, if that means anything to you. One of the guys is raving about QT4, so I need to install it, write a little code and play with it to form an opinion related to it's viability as a basis for open source SCADA development. Java is very nice, but many folks do not like JAVA, due to licenses issues.. Hence the interest in QT4. James -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Re: QT 4
James wrote: Dmitry S. Makovey dmitry at athabascau.ca writes: since packages you use (I assume KDE etc.) are not using qt4 (i.e. require specifically qt3 branch) portage doesn't find any reasons to bump version of qt. AFAIR Qt is a slotted package and you can safely go ahead and do emerge =x11-libs/qt-4.1.1 but you packages wouldn't use it. Ok this kinda makes sense. But what exactly is a 'slotted package', how do I determine when a packages is slotted, and where do I read more about 'slotted'? I see this term used ofen, but, really have no clue exactly what slotted means or if it has various meanings based on the context of it's (verbiage) usage. Slotted means you can have several different versions of a package installed, *at the same time*. So in this case it would mean you would end up with qt-3.x still installed and qt-4.x also installed. Since KDE would be linked against 3.x, it would continue to use that, while you could in theory link against the 4.x version. James wrote: checking whats available, with 'emerge -pv qt', I see: x11-libs/qt-3.3.4-r8 Nothing else... If I add x11-libs/qt to the package.keywords file, I get x11-libs/qt-4.1.1 after editing the package.keyword file, If I run emerge -uDp world, it want to upgrade qt: Calculating world dependencies ...done! [ebuild U ] x11-libs/qt-3.3.4-r9 [3.3.4-r8] If you go to http://packages.gentoo.org/search/?sstring=qt;offset=40 you can see all the versions of qt (third one down on the page). 'emerge -pv qt' first off shows you the latest stable version, 3.3.2-r8. When you add qt to your package.keywords file though, emerge -pv qt' will want to install the *latest* version of qt that is available, currently 4.1.1. However the update world command will find that KDE specifically requires 3.x, so therefore will update to the latest 3.x version, in this case 3.3.4-r9 because even though that in the testing branch, you've just enabled it by adding it in your package.keywords file. Although I don't know why portage doesn't also want to install the 4.1.1 version of qt if they are slotted... Shawn -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Re: QT 4
On Thursday 16 March 2006 15:03, James wrote: Dmitry S. Makovey dmitry at athabascau.ca writes: since packages you use (I assume KDE etc.) are not using qt4 (i.e. require specifically qt3 branch) portage doesn't find any reasons to bump version of qt. AFAIR Qt is a slotted package and you can safely go ahead and do emerge =x11-libs/qt-4.1.1 but you packages wouldn't use it. Ok this kinda makes sense. But what exactly is a 'slotted package', how do I determine when a packages is slotted, and where do I read more about 'slotted'? I see this term used ofen, but, really have no clue exactly what slotted means or if it has various meanings based on the context of it's (verbiage) usage. in /usr/portage/x11-libs/qt/qt-4.1.1.ebuild check the line SLOT=4 and compare it to /usr/portage/x11-libs/qt/qt-3.3.5.ebuild: SLOT=3 which indicates that those installed in different slots (in basic terms - those could be installed side by side without affecting existing applications unless they explicitly dependant on specific Qt version). there are quite a few slotted packages in portage so you might bump into this every now and then (KDE is slotted AFAIR). -- Dmitry Makovey Web Systems Administrator Athabasca University (780) 675-6245 pgpRm1XWL7WAr.pgp Description: PGP signature
Re: [gentoo-user] Re: QT 4
On Thursday 16 March 2006 23:43, Shawn Haggett wrote: Although I don't know why portage doesn't also want to install the 4.1.1 version of qt if they are slotted... That's because qt is neither in the world file or a depency of any package which is in the world file. It wants to upgrade to newest qt-3* because that is a depency of one or more packages in the world file. -- Bo Andresen -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Re: QT 4
Dmitry S. Makovey schreef: there are quite a few slotted packages in portage so you might bump into this every now and then (KDE is slotted AFAIR). Even easier-- so are kernel sources. Install a new one, and it's always going to be [ NS ], not [ U ] . Looking at how kernel sources are handled on the system seems to me to be the easiest entry point to understanding SLOTs. Holly -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Re: QT 4
On Thursday 16 March 2006 23:03, James wrote: Dmitry S. Makovey dmitry at athabascau.ca writes: since packages you use (I assume KDE etc.) are not using qt4 (i.e. require specifically qt3 branch) portage doesn't find any reasons to bump version of qt. AFAIR Qt is a slotted package and you can safely go ahead and do emerge =x11-libs/qt-4.1.1 but you packages wouldn't use it. Ok this kinda makes sense. But what exactly is a 'slotted package', Slotted means that several versions of a package can coexist at the same system. In the case of qt version 3 goes into /usr/qt/3 and version 4 goes into /usr/qt/4. how do I determine when a packages is slotted, and where do I read more about 'slotted'? Have a look at 'man emerge' # emerge -vp qt These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild NS ] x11-libs/qt-4.1.1 USE=... 27,110 kB ^^^ The 'S' means that it is slotted. On Thursday 16 March 2006 20:11, James wrote: I really confused as this is not very clear what the hardmasked, testing and stable versions of QT? I've been told that QT 4 is 'very young' which I interpret as unstable and buggy. How do I tell if qt-4.1.1 is hard masked or testing as I've never seen this before. I would recommend app-portage/eix as it gives a clear overview of the available versions of any package. # eix -e qt * x11-libs/qt Available versions: 3.3.4-r8 ~3.3.4-r9 [M]3.3.5 [M]3.3.5-r1 4.1.0-r1 4.1.0-r2 4.1.1 Installed: 3.3.4-r8 Homepage:http://www.trolltech.com/ Description: The Qt toolkit is a comprehensive C++ application development framework. Versions that are prefixed by [M] are hard masked usually because they are broken. They should not be unmasked without knowing why they were originally masked. Versions prefixed by a ~ are masked by ~ARCH i.e. testing and can be used by adding them to package.keyword. eix respects package.* an hence 4.1.0-r1 is shown as stable because of this: # grep x11-libs/qt /etc/portage/package.keywords =x11-libs/qt-4.1* ~x86 As you can see you can specify versions to unmask if you want a testing version of qt-4.1* but stable for any other version. This is explained in 'man portage'. To see why a package is hard masked you have to look in the package.mask files. Packages are masked on several levels. Both general and profile specific. On my system I am using the default-linux/x86/2006.0 profile. # ls -ld /etc/make.profile lrwxrwxrwx 1 root root 48 Mar 10 02:02 /etc/make.profile - ../usr/portage/profiles/default-linux/x86/2006.0 Therefore packages on my system might be masked in the following locations (note that not all of those files actually exist because no packages are hard masked on some of those levels. Still these are the locations where portage will look.): /usr/portage/profiles/default-linux/x86/2006.0/package.mask /usr/portage/profiles/default-linux/x86/package.mask /usr/portage/profiles/default-linux/package.mask /usr/portage/profiles/package.mask And the reason why qt-3.3.5 is hard masked: # grep -A 2 Qt /usr/portage/profiles/package.mask # Qt-3.3.5 causes a lot of compilation failures. # See bug #106402. ~x11-libs/qt-3.3.5 But qt-4 is not hard masked so it should be working or at least it won't break anything. ;) HtH -- Bo Andresen -- gentoo-user@gentoo.org mailing list
[gentoo-user] Re: QT 4
Bo Andresen bo.andresen at gmail.com writes: Slotted means that several versions of a package can coexist at the same system. In the case of qt version 3 goes into /usr/qt/3 and version 4 goes into /usr/qt/4. how do I determine when a packages is slotted, and where do I read more about 'slotted'? ^^^ The 'S' means that it is slotted. OK, thanks everyone, these explainations and the man pages make more sense now. thanks everyone! James -- gentoo-user@gentoo.org mailing list
