Re: Need help building c4x cross compiler

[Ian Lance Taylor <ian at airs dot com>]

Grant Mills <gmills@rdinstruments.com> writes:

> Here are the commands I ran after unpacking the source.
> 
> ../binutils-2.13.91/configure --target=c4x --prefix=`pwd`
> make
> sudo make install
> 
> No problem.  Everything builds and installs.  I add `pwd`/bin to my path and
> run basically the same thing in the gcc directory.
> 
> ../gcc-3.3/configure --target=c4x --prefix=`pwd` -enable-language={c,c++}
> make
> Make fails because of an invalid switch being passed to 'as'.  The build
> fails when trying to build libgcc.a.  The actual error is 
> as: unrecognized option `-m40'

When you do this kind of thing, use the same --prefix argument for
both binutils and gcc.  Don't use `pwd`.  Pick some neutral directory
and use that.

> Which seems to indicate to me that something happened when building xgcc
> which is causing it to pass bad options to as.  However, -m40 is valid for
> c4x-as.  Did I screw up the configuration of gcc, or the install of
> binutils?

Most likely gcc is invoking the wrong as--the native assembler for
your build system rather than the cross-assembler.  Using the same
--prefix is the first step to avoiding that problem.

Also, I assume you have seen this:
    http://www.sthoward.com/CrossGCC/

Ian