debugging so files

ichijoji · 06-08-2006, 01:28 PM

I've been tasked with porting some code to 64 bit linux (FC5). I got pretty far with it and it compiles and links now, but when I run it I get this error:

Code:

hypno/bin/linuxd/libenkiduo.so: undefined symbol: _ZN3TNL9dVsprintfEPcjPKcPv

This error is being returned from these calls:

Code:

    void *dll = _dlopen_wrapper(name, true);
    if (!dll) {
        char *err1 = n_strdup(dlerror());

I barely have an understanding of how to use .so files, and I have _no_ idea how to debug them. What's the general method for fixing something like this?

ichijoji · 06-08-2006, 01:50 PM

A symbol lookup reveals that a similar symbol is defined in the file:

Code:

$ nm libenkiduo.so | grep _ZN3TNL9dVsprintf
00000000007b8d64 T _ZN3TNL9dVsprintfEPcjPKcP13__va_list_tag
                 U _ZN3TNL9dVsprintfEPcjPKcPv

ichijoji · 06-08-2006, 04:40 PM

I got it. It turned out to be some obscure vprintf function way on the other side of the project that didn't match its header and had never been compiled before.

computation · 06-08-2006, 07:01 PM

glad we could help

ichijoji · 06-08-2006, 09:43 PM

This happens whenever I stop to put together a question to ask somebody else. I think what I'll do is institute a mandatory 1 hour delay before actually posting anything.

computation · 06-08-2006, 11:37 PM

I ussually wait until i'm completely fed up with the problem and then post.......and then realize I could have had an answer 2 and a half hours earlier

06-08-2006, 01:28 PM	#1
ichijoji GA Join Date: Nov 2002 Posts: 179	debugging so files I've been tasked with porting some code to 64 bit linux (FC5). I got pretty far with it and it compiles and links now, but when I run it I get this error: Code: hypno/bin/linuxd/libenkiduo.so: undefined symbol: _ZN3TNL9dVsprintfEPcjPKcPv This error is being returned from these calls: Code: void dll = _dlopen_wrapper(name, true); if (!dll) { char err1 = n_strdup(dlerror()); I barely have an understanding of how to use .so files, and I have _no_ idea how to debug them. What's the general method for fixing something like this? __________________ Illusion and reality become impartiality and confidence.
ichijoji is offline

06-08-2006, 01:50 PM	#2
ichijoji GA Join Date: Nov 2002 Posts: 179	A symbol lookup reveals that a similar symbol is defined in the file: Code: $ nm libenkiduo.so \| grep _ZN3TNL9dVsprintf 00000000007b8d64 T _ZN3TNL9dVsprintfEPcjPKcP13__va_list_tag U _ZN3TNL9dVsprintfEPcjPKcPv __________________ Illusion and reality become impartiality and confidence.
ichijoji is offline

06-08-2006, 04:40 PM	#3
ichijoji GA Join Date: Nov 2002 Posts: 179	I got it. It turned out to be some obscure vprintf function way on the other side of the project that didn't match its header and had never been compiled before. __________________ Illusion and reality become impartiality and confidence.
ichijoji is offline

06-08-2006, 07:01 PM	#4
computation Registered User Join Date: May 2006 Posts: 35	glad we could help
computation is offline

06-08-2006, 09:43 PM	#5
ichijoji GA Join Date: Nov 2002 Posts: 179	This happens whenever I stop to put together a question to ask somebody else. I think what I'll do is institute a mandatory 1 hour delay before actually posting anything. __________________ Illusion and reality become impartiality and confidence.
ichijoji is offline

06-08-2006, 11:37 PM	#6
computation Registered User Join Date: May 2006 Posts: 35	I ussually wait until i'm completely fed up with the problem and then post.......and then realize I could have had an answer 2 and a half hours earlier
computation is offline

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