From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark H Weaver <mhw@netris.org>
Subject: Re: [PATCH 07/13] gnu: gpsbabel: Fix regression caused by update to
	qt 5.7.
Date: Sun, 21 Aug 2016 15:59:45 -0400
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References: <20160820215957.GA6502@jasmine>
	<20160821140825.13048-1-david@craven.ch>
	<20160821140825.13048-7-david@craven.ch>
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In-Reply-To: <20160821140825.13048-7-david@craven.ch> (David Craven's message
	of "Sun, 21 Aug 2016 16:08:20 +0200")
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To: David Craven <david@craven.ch>
Cc: guix-devel@gnu.org

David Craven <david@craven.ch> writes:

> * gnu/packages/gps.scm (gpsbabel)[arguments]: Require gnu++11. Disable tests
> on all platforms due to rounding error.
> ---
>  gnu/packages/gps.scm | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/gnu/packages/gps.scm b/gnu/packages/gps.scm
> index ccd9636..8124990 100644
> --- a/gnu/packages/gps.scm
> +++ b/gnu/packages/gps.scm
> @@ -48,7 +48,9 @@
>                  "0xf7wmy2m29g2lm8lqc74yf8rf7sxfl3cfwbk7dpf0yf42pb0b6w"))))
>      (build-system gnu-build-system)
>      (arguments
> -     `(#:configure-flags '("--with-zlib=system")
> +     `(#:configure-flags
> +        '("--with-zlib=system"
> +          "CXXFLAGS=-std=gnu++11")

The ' should be under the #, so the two lines above should be moved one
column to the left.

>         #:phases
>         (modify-phases %standard-phases
>          (add-before 'configure 'pre-configure
> @@ -59,7 +61,8 @@
>         ;; On i686, 'raymarine.test' fails because of a rounding error:
>         ;; <http://hydra.gnu.org/build/133040>.  As a workaround, disable tests
>         ;; on these platforms.
> -       #:tests? ,(not (string-prefix? "i686" (%current-system)))))
> +       ;; On x86_64 with -std=gnu++11 tests also fail due to rounding error.
> +       #:tests? #f))

Please add a FIXME to this comment.  We should not be in the habit of
simply disabling test suites that fail and forgetting about them.

I don't see why there should be a rounding error on x86_64.  Unlike
i686, double-rounding doesn't happen on that platform, and it's what
developers are mostly testing on.

Anyway, okay for now with the FIXME comment.

       Mark