Radoslaw Dyczek wrote:
> Some facts:
> 1. Cross developing on Linux x86 for QNX x86
> 2. Sourcefiles are symbolic links to the real sources
> 3. Not using Momentics
> 
> Working:
> $ ntox86-gdb 
> gdb> target qnx <ip>:<port>
> gdb> upload test /tmp/test
> gdb> sym test
> gdb> b main
> gdb> run /tmp/test
> gdb> c
> ..
> Here I can debug and list the sourcecode with binaries built from symbolic links and from real source code files.

Ok, do I understand correctly that the above works as expected? 


> 
> Not working!:
> $ ddd --debugger ntox86-gdb
> gdb> target qnx <ip>:<port>
> gdb> upload test /tmp/test
> gdb> sym test
> 
> Now when I try to set the breakpoint (with the mouse) I've got the message that the source code file can not be found!

> 
> When I use the ddd with a binary that is build from real files not Symbolic links, there are now problems! Debugging 
remote linux both methods with/without symbolic links works fine..
> 
> The problem is a binary which is built from symbolic links files and ddd.

I think that gcc will always resolve symbolic links and store physical paths; (see that by using ntox86-readelf -wl <
your binary>;  look foor "The Directory Table" it will point to your physical paths).

gdb, in turn, uses this information to search for source files. I do not fully understand where the problem in your case
 is: when using gdb alone (without ddd) you say it works fine.

When you are setting the breakpoint using ddd; can you see what exactly is it sending to gdb? What I would expect is 
that it is trying to set breakpoint using full file path (symbolic path) and gdb can not match it with physical paths 
stored in the binary.

Unfortunately, I am not familiar with ddd and can not help a lot with it - maybe it can do a path substitution for you 
(before setting the breakpoint)?

You posting to Momentics IDE forum about ddd not woring is kind of funny.
Did you try to use IDE debugger?

Radoslaw Dyczek wrote:
> Some facts:
> 1. Cross developing on Linux x86 for QNX x86
> 2. Sourcefiles are symbolic links to the real sources
> 3. Not using Momentics
>
> Working:
> $ ntox86-gdb 
> gdb> target qnx <ip>:<port>
> gdb> upload test /tmp/test
> gdb> sym test
> gdb> b main
> gdb> run /tmp/test
> gdb> c
> ..
> Here I can debug and list the sourcecode with binaries built from symbolic links and from real source code files.
>
> Not working!:
> $ ddd --debugger ntox86-gdb
> gdb> target qnx <ip>:<port>
> gdb> upload test /tmp/test
> gdb> sym test
>
> Now when I try to set the breakpoint (with the mouse) I've got the message that the source code file can not be found!

>
> When I use the ddd with a binary that is build from real files not Symbolic links, there are now problems! Debugging 
remote linux both methods with/without symbolic links works fine..
>
> The problem is a binary which is built from symbolic links files and ddd.
>
> We have to use the symbolic links to our sourcecode coz we work with a versioning system and its cache..
>
> Any ideas?
>
>
>
>
>
>
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post10250
>
>