Add script to build many glibc configurations

[Andreas Schwab]

On Nov 17 2016, Zack Weinberg <zackw@panix.com> wrote:

> (I see a libgmp.a (for instance) in install/host-libraries/lib/, but not
> in install/compilers/alpha-linux-gnu/sysroot/, which is the only place
> the above configure operation might have thought to look for it.)

Since libgmp is needed for the host the configure script will not search
the target sysroot.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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