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3808 discussions

Re: [trinity-devel] QT API renaming! Why?!
by Timothy Pearson 08 Mar '12

08 Mar '12

<snip> >> Yes! I'll pick an obvious example, KHTML. I would like to replace the broken KHTML engine with Webkit using Qt4. Problem is, I can't link a Qt4 >> library into a TDE library or program due to symbol conflicts. Even if you trick the compiler and linker, the program will crash at runtime because the C++ runtime will not know which symbols (Qt3 or Qt4) to use when function names and static members have the same name. > But that is what the linker does. Isn't it? Looks at symbolic names and puts addresses instead. Therefore you shouldn't have name > conflicts at runtime. The crash you may encounter is because the linker chosen wrong symbols to link together in one algorithm. But this have obvious solution. Put the code you want to link with Qt4 in separate module and link only with Qt4. I still don't understand how is renaming better solves this. Could you please refer exact source file and function? Actually the linker creates a reference to a "mangled" symbol--see http://en.wikipedia.org/wiki/Name_mangling#Name_mangling_in_C.2B.2B Let's take a simple example, qWarning. This becomes _Z8qWarningPKcz in libqt-mt.so.3.3.8 (nm -D /usr/lib/libqt-mt.so | grep qWarning), and _Z8qWarningPKcz in /usr/lib/libQtCore.so (nm -D /usr/lib/libQtCore.so | grep qWarning). If my program references Z8qWarningPKcz, which library will the symbol resolver choose at runtime? They are not binary compatible with each other, and when the symbol resolver chooses the wrong one at runtime (which it will do quite often) the entire program will crash. <snip> > I suppose this could be done in more easy way without renaming. Not really, see above. :-) And if you want to work on a "pure" KDE 3.5.10 fork you have that right; just be aware that you will hit a dead end far before TDE will. ;-) Tim

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tdegraphics build failure 2 : libkscan.so (linker error?)
by David C. Rankin 08 Mar '12

08 Mar '12

Darrell, all, Ran into another issue with tdegraphics that I can't solve by a dependency review: [ 31%] Building CXX object libkscan/CMakeFiles/kscan-shared.dir/imgscaninfo.cpp.o Linking CXX shared library libkscan.so /usr/bin/ld: cannot find -lsane-Wl,-O1,--sort-common,--as-needed,-z,relro,--hash-style=gnu-L/usr/lib collect2: ld returned 1 exit status make[2]: *** [libkscan/libkscan.so.1.0.0] Error 1 make[1]: *** [libkscan/CMakeFiles/kscan-shared.dir/all] Error 2 make: *** [all] Error 2 Is this a CMake issue? Linker error? What to look for? -- David C. Rankin, J.D.,P.E.

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Need help troubleshooting
by Darrell Anderson 07 Mar '12

07 Mar '12

I'm working on bug report 892. Most of this work involves changing XDG categories (X-KDE-Whatever -> X-TDE-Whatever), which will help further distinguish Trinity from KDE3 and KDE4 and reduce potential conflicts. The work is going well but I have run into a challenge. When I rebuild tdelibs and tdebase to install desktop files to $PREFIX/share/applications/trinity rather than $PREFIX/share/applications/kde, a few things start breaking. Some keyboard shortcuts stop, but I can recover that by deleting the user's khotkeys config file and starting afresh. That problem might be related or not, or might just be cruft from its KDE3 days when I migrated profiles. The real problem is noticeable when I open Konqueror and select the Settings menu option. Most of the setting modules do not appear. The only modules that appear are the "native" ones: Behavior, Appearance, Previews & Meta-Data, and Performance. The associated desktop files built and installed to $PREFIX/share/applications/trinity just fine. I can solve the problem by creating a sym link from $PREFIX/share/applications/kde to $PREFIX/share/applications/trinity and restarting the session. I tried a new profile but that did not solve the problem either. Only the sym link, or building to $PREFIX/share/applications/kde, avoids the problem. I haven't tested with other packages because at this point I only need tdelibs and tdebase for testing. At this point I'm concluding that something in the code is hard-coded to look for $PREFIX/share/applications/kde. I can't find anything obvious or explicit. I've looked hard and am stumped. I would appreciate any help in this challenge. :) Thanks! Darrell

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Status of tde modules -- AFTER tdebase??
by David C. Rankin 07 Mar '12

07 Mar '12

Tim, All, I'm working forward in the build order after building tdebase, but I'm not sure what should be building and what shouldn't?? The build order I'm trying to follow is: "dependencies/$useqt" OK 'dependencies/tqtinterface' OK 'dependencies/arts' OK 'dependencies/dbus-tqt' OK 'dependencies/dbus-1-tqt' OK 'dependencies/tqca-tls' OK 'dependencies/libart-lgpl' OK 'dependencies/avahi-tqt' FAILED 'dependencies/libcaldav' OK 'dependencies/libcarddav' OK 'tdelibs' OK 'tdebase' OK 'applications/abakus, ..??' 'tdebindings' 'tdeaccessibility' 'tdeutils' 'tdemultimedia' 'tdenetwork' 'tdeadmin' 'tdeartwork' 'tdegames' 'tdetoys' 'tdeedu' 'tdegraphics' 'tdevelop' 'tdeaddons' 'tdepim' 'tdewebdev' 'tdesdk' What after tdebase should be ready to build? Also why is everything turned OFF ("Build all" OFF) in the tdegraphics, tdenetwork, etc.. CMakeLists.txt files? -- David C. Rankin, J.D.,P.E.

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GitHub hacked
by Keith Daniels 07 Mar '12

07 Mar '12

It sounds like you have your own server for your repository, so this doesn't apply directly to Trinity Desktop. But the vulnerability probably applies to your personal GIT server as well--which means it could be hacked if this is not fixed. ----------------- GitHub hacked, millions of projects at risk of being modified or deleted http://www.extremetech.com/computing/120981-github-hacked-millions-of-proje… Keith

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Why doesn't http://scm.trinitydesktop.org/scm/git/ respect '--depth 1'
by David C. Rankin 07 Mar '12

07 Mar '12

Tim, all, I am working on build scripts that will individually pull or update the source by pulling code from the git tree. To make this more efficient for building individual modules (and reduce unneeded bandwidth), it is recommended to use the git clone form: git clone --depth 1 http://scm.trinitydesktop.org/scm/git/whatever But http://scm.trinitydesktop.org/scm/git/ refuses to allow '--depth 1' to be used in the git clone. Anybody know why? The error received is: Cloning into 'libart-lgpl'... error: RPC failed; result=22, HTTP code = 500 fatal: The remote end hung up unexpectedly It works fine without the --depth limitation. What say the 'git' masters? -- David C. Rankin, J.D.,P.E.

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tdegraphics: 'XShapeQueryExtension' is defined in DSO /usr/lib/libXext.so.6
by David C. Rankin 07 Mar '12

07 Mar '12

Tim, all, I've run into more link problems in tdegraphics. This time I am fairly certain it is a gcc >= 4.6.2 problem. The error is: /usr/bin/ld: CMakeFiles/ksnapshot.dir/windowgrabber.cpp.o: undefined reference to symbol 'XShapeQueryExtension' /usr/bin/ld: note: 'XShapeQueryExtension' is defined in DSO /usr/lib/libXext.so.6 so try adding it to the linker command line This means I need to add '-lXext' to the LDADD lines for ksnapshot. But where in the CMake chain does this get added. I tried patching the makefile, but cmake ignores the patch, so it needs to go in a CMakeList file somewhere, but is that in tdegraphics or tdegraphics/ksnapshot? The changes needed are: -ksnapshot_LDADD = $(LIB_TDEPRINT) +ksnapshot_LDADD = $(LIB_TDEPRINT) -lXext The full error follows. Do we need to open bugs on the gcc linking issues when found? Full Error: [ 64%] Building CXX object ksnapshot/CMakeFiles/ksnapshot.dir/ksnapshotwidget.cpp.o cd /build/src/build/ksnapshot && /usr/bin/c++ -DHAVE_CONFIG_H -DKSNAPVERSION=\"0.7\" -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -DQT_NO_ASCII_CAST -DQT_CLEAN_NAMESPACE -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION -DQT_THREAD_SUPPORT -D_REENTRANT -include tqt.h -I/build/src/build/ksnapshot -I/build/src/tdegraphics/ksnapshot -I/build/src/build -I/opt/trinity/include -I/opt/tqt3/include -I/opt/trinity/include/tqt -o CMakeFiles/ksnapshot.dir/ksnapshotwidget.cpp.o -c /build/src/build/ksnapshot/ksnapshotwidget.cpp Linking CXX executable ksnapshot cd /build/src/build/ksnapshot && /usr/bin/cmake -E cmake_link_script CMakeFiles/ksnapshot.dir/link.txt --verbose=1 /usr/bin/c++ -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -DQT_NO_ASCII_CAST -DQT_CLEAN_NAMESPACE -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION -DQT_THREAD_SUPPORT -D_REENTRANT -include tqt.h -Wl,-O1,--sort-common,--as-needed,-z,relro,--hash-style=gnu CMakeFiles/ksnapshot.dir/ksnapshotiface_skel.cpp.o CMakeFiles/ksnapshot.dir/main.cpp.o CMakeFiles/ksnapshot.dir/ksnapshot.cpp.o CMakeFiles/ksnapshot.dir/regiongrabber.cpp.o CMakeFiles/ksnapshot.dir/windowgrabber.cpp.o CMakeFiles/ksnapshot.dir/ksnapshotwidget.cpp.o -o ksnapshot -rdynamic -L/opt/trinity/lib -L/opt/tqt3/lib /opt/trinity/lib/libtdeprint.so.4.2.0 /opt/trinity/lib/libkio.so.4.2.0 /opt/trinity/lib/libtdeui.so.4.2.0 -lfreetype -lfontconfig /opt/trinity/lib/libtdesu.so.4.2.0 -lutil /opt/trinity/lib/libkwalletclient.so.1.0.1 /opt/trinity/lib/libtdecore.so.4.2.0 /opt/trinity/lib/libDCOP.so.4.2.0 /opt/trinity/lib/libtdefx.so.4.2.0 -ltqt -ltqt-mt -lXrender -lX11 -lz -lidn -lXcomposite -lICE -lSM -Wl,-rpath,/opt/trinity/lib:/opt/tqt3/lib: /usr/bin/ld: CMakeFiles/ksnapshot.dir/windowgrabber.cpp.o: undefined reference to symbol 'XShapeQueryExtension' /usr/bin/ld: note: 'XShapeQueryExtension' is defined in DSO /usr/lib/libXext.so.6 so try adding it to the linker command line /usr/lib/libXext.so.6: could not read symbols: Invalid operation collect2: ld returned 1 exit status m -- David C. Rankin, J.D.,P.E.

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QT API renaming! Why?!
by Aleksey Midenkov 07 Mar '12

07 Mar '12

Will someone tell me or put the link to the description of why someone would need to rename QT API? I know that for programmer this is a disaster!!! This will strangle the development!

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How are user profiles updated with a new release?
by Darrell Anderson 07 Mar '12

07 Mar '12

What is the mechanism to update user profile configuration files when something changes in a new release? How is a specific update tracked so updating is performed only for the first session with a new release and not repeated during subsequent sessions? I'm working on bug report 892. The changes require a one-time search-and-replace in the user's profile directory of all occurrences of X-KDE to X-TDE. Darrell

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TSAK freezing my keyboard input or mutilating it.
by Calvin Morrison 07 Mar '12

07 Mar '12

Hey all, Recently, TSAK has started messing up my system. Whenever I hit the caps lock key, the keyboard basically freezes. The CPU does not thrash, but I am almost certain it is tsak. Basically it would not allow me to type in any new letters, and the caps light gets locked, I then have to reboot to correct it ( well i probably could have killed tsak) Is TSAK grabbing ther wrong keys? this is an lenovo x220. here is my xev output with tsak disabled: KeymapNotify event, serial 21, synthetic NO, window 0x0, keys: 0 0 0 0 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 KeyRelease event, serial 30, synthetic NO, window 0x1200001, root 0xb2, subw 0x0, time 431876, (-866,348), root:(100,371), state 0x0, keycode 36 (keysym 0xff0d, Return), same_screen YES, " XLookupString gives 1 bytes: (0d) " XFilterEvent returns: False PropertyNotify event, serial 33, synthetic NO, window 0x1200001, atom 0x1c3 (_NET_WM_ICON_GEOMETRY), time 431952, state PropertyNewValue KeyPress event, serial 34, synthetic NO, window 0x1200001, root 0xb2, subw 0x0, time 432888, (-866,348), root:(100,371), state 0x0, keycode 66 (keysym 0xffe5, Caps_Lock), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 34, synthetic NO, window 0x1200001, root 0xb2, subw 0x0, time 432968, (-866,348), root:(100,371), state 0x2, keycode 66 (keysym 0xffe5, Caps_Lock), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False ClientMessage event, serial 34, synthetic YES, window 0x1200001, message_type 0x17c (WM_PROTOCOLS), format 32, message 0x17b (WM_DELETE_WINDOW) Calvin

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