[Bug bootstrap/42424] in-tree GMP/MPFR/MPC bootstrap fails

["developer at sandoe-acoustics dot co dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #2 from developer at sandoe-acoustics dot co dot uk  2010-01-02 16:41 -------
(In reply to comment #1)
> I was able to do a C-only bootstrap of mainline with all three libraries
> in-tree on x86_64-unknown-linux-gnu.  I used mpc-0.8, mpfr-2.4.2, gmp-4.3.1 and
... 
> 1.  Is this a recent regression or has it always failed?
since the introduction of mpc - prior to that I had been using in-tree mpc/mpfr
with no issues.
[however the first version of mpc I've used is 0.8.1].
> 2.  What versions of the various libraries did you use?
gmp-4-3-1, mpfr-2-4-1 source trees.
mpc-0.8.1 source tree
> 3.  Does it fail with all versions of the libs or just some?
I haven't built with mpc prior to 0.8.1 - but these same gmp/mpfr versions
*were* OK prior to the introduction of mpc.
> 4.  The targets listed include darwin9 and i686-linux, do they both fail for
> the same reason?
yes - configure fail for mpc.
> 5.  Do you have other versions of gmp/mpfr installed somewhere that conflict
> with the bootstrap?
no, I don't install any of these libs on darwin.  
I have installed on i686-linux *since*, but the fault occurred on a fresh
ubuntu 9.10 install.

> 6.  Is there more info or investigation you can provide?
make check (mpc part) also fails when the mpc is built in tree - even when the
gm/mpfr libs are supplied using --with-{gmp,mpfr}= ... this perhaps points at
an mpc config change between 0.8 and 0.8.1 - since 0.8 works for you.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42424