[PATCH for TESTING] ADA Cross Compile Fix for GCC-4.1.2

[Mark Fortescue <mark at mtfhpc dot demon dot co dot uk>]

Hi All,

Cross compiling a native ADA compiler fails because the build system tries 
to use xgcc and associated cross compiled tools to do things on the build 
host. Where <host> is not equal to <build> this will usually fail.

The attached patch is a step towards fixing the issue.
It works for the test cases where:

 <build>  = <host>  = <target>,
 <build>  = <host> != <target> and
 <build> != <host>  = <target>.

but some aspects of it are some what of a hack.

To do things the same way as the C compiler part of GCC does things, would 
require more work to be done by the top level configure script. It would 
need to set up paths to the correct ADA tools to use for various things in 
much the same way as it sets up GCC_FOR_TARGET e.g. GCC_FOR_HOST, 
GNATMAKE_FOR_HOST ....

Regards
	Mark Fortescue.

Attachment: ADA-CrossCompile-Native.patch
Description: Binary data