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How to link libXm.a library into an application to allow debugging with gdb

Submitted by mikef on Tue, 07/12/2011 - 20:33.

I have an application that is misbehaving. It goes into a hard loop when the user closes a page. The last application f() calls the Xtunmanage() and from there the backtrace is many layers deep. I would like to be able to step through these routines to see what is wrong with the data structures to cause this.

I have installed the source code and built it but when I try to link to the generated library libXm.a I get a huge number of undefined references to f()s which looks they are in libXm.a

My application is made up of many libraries of our generated source. We use -Wl, --start-group
our libraries
Motif libraries
-W1, --end-group -z muldefs

Probably something obvious I am missing.

 



  

    
    
    
  

  

    
    
    
Sat, 08/06/2011 - 17:27#1

    

    

        walter    

    
walter's picture
    

    

    
note that the  linker will

        
note that the  linker will prefer libXm.so over libXm.a


I am not sure what your problem is but missing symbols normaly mean that the libXm is not linked at all. Maybe you have to define a path like -L/for/my/lib.


While debugging  LD_PRELOAD comes handy, see man ld.so for details.


hope that helps