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bug#36338: guile-2.2.5 fails to build with -ffast-math

From: Cyprien Nicolas
Subject: bug#36338: guile-2.2.5 fails to build with -ffast-math
Date: Sun, 7 Jul 2019 15:03:11 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1

On 27/06/2019 04:57, Mark H Weaver wrote:

Guile generally assumes that the underlying C implementation will be
standards compliant.  -Ofast, -ffast-math and related options disregard
standards compliance.  Among other things, -ffast-math implies
-ffinite-math-only, which generates code that assumes that all floating
point values are finite.  However, there's code in Guile's compiler that
uses +inf.0 and -inf.0 and expects that they will behave as specified in

So, in summary, I would say that Guile does not support being compiled
with -Ofast, -ffast-math, or many of the options that -ffast-math

Thank you for the clear and detailed explanation. It makes sense.


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