May 2005 - openSUSE Programming - openSUSE Mailing Lists

Code produces different results
by duneldaion＠web.de 04 May '05

04 May '05

Dear all, I experience a strange problem with a C-Program. When I run it on different machines, sometimes it produces different results, and sometimes it doesn't. Basically, there seem to exist two different cases: a) I compiled the program at the end of January. The compiled binary was copied to different computers, and produces different results on different machines. b) I recompiled the program recently. With the _new_ binary of April, all machines calculate the same result! First ideas: 1) Yes, the code was identical for case a) and b). 2) Could it be that the hardware of my computers differs too much? This does not seem to be the case. Also, for the case b) it does not matter on which of the machines I compile before running it on all of them. 3) Could it be that some kernel update (or gcc update?) partially "broke" the compiler, and led to the results of case a) (which was compiled on a SuSE Linux 9.0 with kernel 2.4.21-99). A later kernel update possibly "repaired" this problem (case b) was compiled with SuSE Linux 9.0 with 2.4.21-xxx kernel, with xxx > 166). Also, a check with a SuSE 9.1, kernelversion 2.6.5-7.111 reproduces case b). Is the idea of problems with online-updates plausible at all? Does anyone have other ideas? Thank you very much, Mathias P.S. Please reply also to duneldaion(a)web.de in addition to posting to the list. Thanks!

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XmCreateMenuBar replacement
by Colin Carter 03 May '05

03 May '05

Hi, I am trying to use the following functions but I can't find them in 64 bit files. Does anybody have any idea, or can suggest equivalent functions? hMenuBar = XmCreateMenuBar( hMainWindow, "Main Menu", args, NumArgs); (Function absent) hRC = XtCreateManagedWidget( "rowcol", XwrowColWidgetClass, hMainWindow, NULL, 0); (Class absent) Regards, Colin

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Kylix 3 on SuSE 9.3 problems
by DChristensen＠theimg.net 03 May '05

03 May '05

I loaded SuSE 9.3 Pro on a workstation yesterday and have spent today loading Kylix 3. After adding "export LD_ASSUME_KERNEL=2.4.1 && " into the application link, Kylix does execute. However, the IDE is displayed with tiny fonts that are unreadable. Has anyone else seen this behavior and, if so, can you offer some guidance to help solve the problem? Thanks in advance. David Christensen Brokers International, Ltd. 1200 E Main St Panora, IA 50216 Phone: (641) 755-2775 Ext 1032 Cell: (515) 490-3936 Fax: (641) 755-2381 dchristensen(a)theimg.net

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Strip out unneeded libraries
by Chris Kwasneski 03 May '05

03 May '05

I have 50 odd utility programs that are all part of one 'system'. I currently have a make file that cascade builds each one from a higher level directory. Each program is in its own directory, and has its own makefile. Each program uses 4 (ish) of 7 libraries. Each program using a different set of 4 out of the 7l. What I'd like to do is place the list of 7 libraries in a higher make file and include them at the lower make file. However, when I build them, I currently get all 7 libraries linked in, even though the program needs only 4. Is there a way to tell gcc or ld to trim unused libraries? I did a search, and I found a -strip-dead for ld, but it doesn't seem to work. I also tried --no-whole-archive, and a -Wl switch that escapes me right now.. My version info: GNU ld version 2.15.91.0.2 20040727 (SuSE Linux) gcc version 3.3.4 (pre 3.3.5 20040809) -- -Chris Kwasneski Software Engineer Yuma Proving Grounds

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RE: [suse-programming-e] Code produces different results
by Calkins, Dennis 02 May '05

02 May '05

What C Runtime functions do you call? What Kernel Level calls do you make? Do you make use of any other Library services external to GLIBC? Maybe there was a BUG fix in one of them that explains this. -----Original Message----- From: duneldaion(a)web.de [mailto:duneldaion@web.de] Sent: Monday, May 02, 2005 1:10 PM To: suse-programming-e(a)suse.com Subject: [suse-programming-e] Code produces different results Dear all, I experience a strange problem with a C-Program. When I run it on different machines, sometimes it produces different results, and sometimes it doesn't. Basically, there seem to exist two different cases: a) I compiled the program at the end of January. The compiled binary was copied to different computers, and produces different results on different machines. b) I recompiled the program recently. With the _new_ binary of April, all machines calculate the same result! First ideas: 1) Yes, the code was identical for case a) and b). 2) Could it be that the hardware of my computers differs too much? This does not seem to be the case. Also, for the case b) it does not matter on which of the machines I compile before running it on all of them. 3) Could it be that some kernel update (or gcc update?) partially "broke" the compiler, and led to the results of case a) (which was compiled on a SuSE Linux 9.0 with kernel 2.4.21-99). A later kernel update possibly "repaired" this problem (case b) was compiled with SuSE Linux 9.0 with 2.4.21-xxx kernel, with xxx > 166). Also, a check with a SuSE 9.1, kernelversion 2.6.5-7.111 reproduces case b). Is the idea of problems with online-updates plausible at all? Does anyone have other ideas? Thank you very much, Mathias P.S. Please reply also to duneldaion(a)web.de in addition to posting to the list. Thanks! -- To unsubscribe, email: suse-programming-e-unsubscribe(a)suse.com For additional commands, email: suse-programming-e-help(a)suse.com Archives can be found at: http://lists.suse.com/archive/suse-programming-e

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Pthreads programming demo
by Jerry Feldman 01 May '05

01 May '05

I am preparing to give a talk on pthread programming at the next BLU meeting. I have a log of good code examples and Dave Butenhof's book, Programming with POSIX Threads is an excellent resource. What I am looking for is a relatively simple demo program that uses graphics. I'm using some demos to show queing, deadlock, mutexes, attribues, Dining Philosophers, and a few other things, but it would be nice to have a simple graphic display using GTK or QT. I'd prefer C or C++ because Java has a different model. -- Jerry Feldman <gaf(a)blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9

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