Re: [PATCH] Indicate minimum in-tree MPFR version handled

[Jeff Law <law@redhat.com>]

On 08/11/2016 05:20 PM, Maciej W. Rozycki wrote:
> Hi,
>
>  Commit 235763 removed support for versions of MPFR below 3.1.0 which have
> a flat directory structure, however it did not introduce any safety check
> for such an unhandled library version present in the tree.  Consequently
> the system-installed version is silently chosen, which if too old, causes
> a confusing configuration failure in mpc/ stating a misleading version
> requirement:
>
> checking for MPFR... yes
> checking for recent GMP... yes
> checking for recent MPFR... no
> configure: error: MPFR version >= 2.4.2 required
> make[1]: *** [configure-mpc] Error 1
>
>  I propose the check below to make people's life just a little bit easier
> and indicate right away that an incorrect version of MPFR has been found
> in the source tree.  This is especially helpful when you just sync your
> build tree from upstream and may easily miss the updated requirement.  I
> carefully chose to use "handled" rather than "supported" in the message as
> the commit referred clearly indicates you are on your own with versions of
> the libraries different from those stated in `download_prerequisites'.
>
> 2016-08-12  Maciej W. Rozycki  <macro@imgtec.com>
>
> 	* configure.ac: Check for the minimum in-tree MPFR version
> 	handled.
> 	* configure: Regenerate.
>
>  OK to apply?
OK.
jeff