Re: Specs file

[Scott Howard <scott@objsw.com>]

The only documentation I have ever found on the SPECS file is in the source
code of 'gcc.c'.  After reading it, I was able with some experimentation to
get the configuration I needed.

Adrian Cox wrote:

> I've built a mingw32->powerpc-eabi cross compiler, using a Solaris host,
> based on gcc-2.8.1. It wasn't easy to build, but the compiler works so
> far.
>
> I'm now trying to add my own embedded target to the specs file, and I
> have a couple of questions:
> 1) Is there any documentation on how to write a specs file from scratch?
> 2) How do I add a default library search path (relative to
> GCC_EXEC_PREFIX) to the specs file?
>
> So far I have established that adding %s to the end of a file name adds
> the specs directory to the start of the file name:
> libc.a%s => $(GCC_EXEC_PREFIX)/powerpc-eabi/2.8.1/libc.a
>
> My include files are succesfully found in
> $(GCC_EXEC_PREFIX)/powerpc-eabi/2.8.1/include.
>
> All I need now is the ability to link the math library by adding -lm to
> the command line.
>
> --
> Adrian Cox, Transtech Parallel Systems,
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