December 2004 - openSUSE Programming - openSUSE Mailing Lists

KDE components in Qt project
by Jose Thadeu Cavalcante 13 Dec '04

13 Dec '04

Hi, I am using KDevelop and QtDesigner to create my applications, create it by starting with Projects/New Project/C++/Qmake Project/Hello world program. All is fine if I only use the Qt components available in QtDesigner. If I use some KDE components, like KDoubleSpinBox, I have no success. There are some tips to use those components? Please help me. Cheers Thadeu

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SCTP and SuSE Kernel - missing headers or rpm?
by az_road runner 10 Dec '04

10 Dec '04

Hi All, I'm running SuSE9.1 with the latest kernel update etc. I'm also trying to compile some (user space) socket programs that involve using the SCTP stack. For much of this development, I need to include sctp.h - so far the only sctp.h on my system is in the /usr/include/linux directory. Looking at some other distros, the user space version resides in /usr/include/netinet (or such). I've tried looking for SCTP dev packages in YaST but haven't found anything - is there something extra I need to install to get this functionality? Thanks, Pete

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USE device problem
by Szabolcs Tahin 08 Dec '04

08 Dec '04

Hello, I`ve been trying to talk to a USB prototyp device using SUSE 9.0 and the JSR80 package (javax.usb), that is by a Java programm. (It will be first hotplugged.) My program won`t work always correct, "tail -f /var/log/messages" delivers in case of an error such messages: ... Dec 7 13:40:27 linux kernel: usbdevfs: usb_submit_urb returned -6 Dec 7 13:40:27 linux kernel: usb-uhci.c: ENXIO c0009a80, flags 0, urb cdb0bf00, burb cdb0b880 ... During searching the Web I found http://lists.suse.com/archive/suse-multimedia/2003-Jun/0068.html (in German). It`s about mounting a digital camera with the similar error message. The advice on the page is waiting for a new kernel version as a bug in it will cause the problem. What do you think? Which SUSE version will has the bug corrected? Thank you-----------Szabolcs

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Kdevelop newbie question
by Mike Adolf 05 Dec '04

05 Dec '04

Greetings, I am a C++ programmer (formerly on Windows) and have started using Kdevelop/Qt. I did the simple "hello world" sample. All worked as expected until the install step when Kdevelop wanted to install files in several directories starting at /usr/local/kde... All are owned by root. The only way I was able to install was to run Build/Install as root. It is very inconvenient to supply a root password everytime you want to run your program. I looked in the Kdevelop config window but did not see a way to alter this, but there must be a way to use Kdevelop as a user without evoking root? Mike

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Configure can't find readline, zlib
by Nigel Gilbert 03 Dec '04

03 Dec '04

I am trying to do an installation from source of PostgreSQL into Suse 9.2 Professional. This is the first thing I've done with this distro. Configure fails, reporting that it cannot find the readline library, although it seems to be present in /lib Running ./configure as root, I get: checking for shmget in -lcygipc... no checking for readline... no configure: error: readline library not found If you have readline already installed, see config.log for details on the failure. It is possible the compiler isn't looking in the proper directory. .... However, a readline library appears to be present in /lib: # find / -name libreadline.so.5 -print /lib/libreadline.so.5 and is reported by ldconfig: # ldconfig -p | grep readline libreadline.so.5 (libc6) => /lib/libreadline.so.5 libguilereadline-v-12.so.12 (libc6) => /usr/lib/libguilereadline-v-12.so.12 libguilereadline-v-12.so (libc6) => /usr/lib/libguilereadline-v-12.so As a check, I explicitly specified to configure the libraries to search: # ./configure --with-libraries=/lib:/usr/lib but it fails in just the same way. I then told configure to ignore readline, and it continue but failed to find zlib in a similar way, although this too seems to be present in /usr/lib I must be doing something stupid - but what? [Note: I have to install from source because after this is working, I need to install an optional contrib to extend PostgeSQL to deal with spatial data, and this will only install into the source tree]. Thanks for your advice! Nigel _______________________________________________________________________ Professor Nigel Gilbert, Editor, Journal of Artificial Societies and Social Simulation, <http://www.soc.surrey.ac.uk/JASSS/> Centre for Research on Social Simulation (CRESS) Department of Sociology, University of Surrey, Guildford, UK. Tel:+44 1483 689173 N.Gilbert(a)soc.surrey.ac.uk <http://cress.soc.surrey.ac.uk/>

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porting problems ....
by William A. Mahaffey III 02 Dec '04

02 Dec '04

.... I am trying to port some code (a Motif CAD/Grid-generator) from SGI to my SuSE 8.2 Linux box. Everything is coming fairly smoothly (actually DAMN smooth), except for 1 thing. The code is mostly C, with some leaf-FORTRAN. I use malloc/realloc & free to allocate & free mamory. I have found several places where I was calling free repeatedly with the same pointer (slides by on SGI, bombs under Linux) & corrected all of them so far. I have fixed all the simple/silly stuff (I think) & now need to go a bit deeper. I tried activating the documented memory debugging using '#define MALLOC_CHECK_' in my program main, but I get no diagnostics or core dump, just execution which gets to a specific line & hangs. I have also tried the mtrace facility, but just get mention of 3 hex addresses where memory is free'd that wasn't alloc'd. I think I am screwing something else up earlier, but can't get a core dump or any diagnostics to help me out. SGI has a nice & very handy memory debugger (malloc (3X)) which can be compiled in & activated at runtime as needed, ignored otherwise. I haven't found any such thing (yet) under Linux. My question is how do I get Linux to either dump core or give me some diagnostics (at every call to malloc or free, like SGI ;-) ) so I can find my more subtle screwups & fix them ? TIA

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RE: [suse-programming-e] porting problems ....
by Kwasneski, Christopher D (Northrop Grumman) 01 Dec '04

01 Dec '04

> -----Original Message----- > From: William A. Mahaffey III [mailto:wam@HiWAAY.net] > Sent: Tuesday, November 30, 2004 7:54 AM > To: Suse Programming List > Subject: [suse-programming-e] porting problems .... > > > .... I am trying to port some code (a Motif > CAD/Grid-generator) from SGI to my SuSE 8.2 Linux box. > Everything is coming fairly smoothly (actually DAMN smooth), > except for 1 thing. The code is mostly C, with some > leaf-FORTRAN. I use malloc/realloc & free to allocate & free > mamory. I have found several places where I was calling free > repeatedly with the same pointer (slides by on SGI, bombs > under Linux) & corrected all of them so far. I have fixed all > the simple/silly stuff (I think) & now need to go a bit > deeper. I tried activating the documented memory debugging > using '#define MALLOC_CHECK_' in my program main, but I get > no diagnostics or core dump, just execution which gets to a > specific line & hangs. I have also tried the mtrace facility, > but just get mention of 3 > hex addresses where memory is free'd that wasn't alloc'd. I > think I am > screwing something else up earlier, but can't get a core dump or any > diagnostics to help me out. SGI has a nice & very handy > memory debugger > (malloc (3X)) which can be compiled in & activated at runtime > as needed, > ignored otherwise. I haven't found any such thing (yet) under > Linux. My > question is how do I get Linux to either dump core or give me some > diagnostics (at every call to malloc or free, like SGI ;-) ) so I can > find my more subtle screwups & fix them ? TIA You could try electric fence (probably on your distro. Try 'man efence'), NJAMD (Not Just Another Malloc Debugger), or google for something similar. Also, compiling it with the -g option (Assuming gcc), and run it through gdb. -Chris Kwasneski Software Engineer YPG, AZ

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