Re: Debugging Compiler Issues

[Arnaud Lacombe <lacombar at gmail dot com>]

Hi,

On Fri, Aug 6, 2010 at 12:47 PM, Gavin Kavanaugh <zeddicus76@gmail.com> wrote:
> First of all I love the crosstool-NG. I used the original one years ago and
> I didn't have any idea it was being updated and maintained. Nice work.
>
> I ran across the update because I am trying to dig into an issue and it
> seems like I should be able to do it with crosstool-NG. If anyone can help
> me out I would greatly appreciate it.
>
> The problem is that I have an application that is running on many different
> distributions. But when I run it on the latest openSUSE 11.3 release I get
> an assert at start up. After some local debugging I find that this assert is
> showing up before I even get to the main function of my app. I have done
> enough debugging to be fairly certain that this issue is in glibc, or gcc.
> ?So what I wanted to do was set up a build so I could build gcc, glibc, and
> whatever else I needed to a specific version and see if the issue
> reproduces. Then I can tweak the library versions to help me determine the
> root cause.
>
> I think what I want is to use crosstool-NG to generate a native compiler,
> but that is not supported(?). Instead I have generated a cross-compiler
> which is for my host machine. I am able to compile my application using this
> new cross-compiler, but running it just leads to problems because of library
> dependency. I thought about setting up a chroot environment for my new
> toolchain but I have not done this before and I'm not sure it's the best
> solution either.
>
> Hopefully that is enough detail to get my point across. Does anyone know how
> to set this up?
>
did you try to link your application statically to avoid using any
system library ? Alternatively, you can override the standard system
library with your own (provided by the test compiler) with
LD_LIBRARY_PATH/LD_PRELOAD.

 - Arnaud

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