Re: RFA/RFC: Adding support for gmp and mpfr sources in the build tree

[Mark Mitchell <mark at codesourcery dot com>]

Nick Clifton wrote:
> Hi Mark,
> 
>> Unless/until the top-level configury does a "staged install", we'll be
>> depending on the build directory structure of these libraries.  We don't
>> control that, and we know they change from time to time.  So, it sounds
>> like we'll be right back to the switches we've just agreed to remove
>> (e.g., --with-gmp-dir).  So, I think this is a bad idea.
> 
> Actually I thought that --with-gmp-dir was still in ?  (Or maybe I
> missed a post about it being removed in the future).

I believe it's now gone, as per Kaveh's patch.  We have --with-gmp=
(pointing at an installed GMP) and, more specifically,
"--with-gmp-include" and "--with-gmp-lib" to point at the include and
lib subdirectories, so handle the fact that some installed versions of
these libraries put the libraries in "lib64" instead of "lib".

I continue to believe that incorporating these libraries into our tree
is a bad idea, and that even including machinery to use in-tree copies
is a bad idea, at least until we have staged installation support.  I
think GCC should be a stand-alone software package.  However, as before,
I'll confine myself to trying to persuade, rather than trying to
interfere, as I realize that a lot of people presently use the "in-tree
build" process.

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713