[m-rev.] for review: make gcc version information available to mmc

[Julien Fischer]

On Fri, 30 Jan 2009, Julien Fischer wrote:

>
> Extend the configuration script so that if the C compiler we are
> using is GCC we also try to determine what version of GCC it is.
>
> Make gcc version information available to mmc.
>
> aclocal.m4:
> 	Add a new macro for determining gcc version information.
>
> configure.in:
> 	Use the new macro.
>
> 	Add a suffix to the "gcc" compiler type containing
> 	the version information.  The suffix has the form:
>
> 	    _<x>_<y>_<z>
>
>        where x, y, and z are the major and minor
> 	version numbers, and patch level respectively.
>
> 	Conform to the above change in a couple of spots.
>
> compiler/globals.m:
> 	Store gcc version information in c_compiler_type.
>
> 	Parse the new form of argument for the --c-compiler-type
> 	option.
>
> compiler/compile_target_code.m:
> 	Conform to the above change.

I will go ahead and commit this unless there are any further comments.

Julien.
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