From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 15 Nov 2021 16:55:59 +0000 (+0100)
Subject: meson: drop -ffast-math
X-Git-Tag: v250-rc1~254^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=394ac84df9ecc1556b922c1161503ef74962fe6a;p=thirdparty%2Fsystemd.git

meson: drop -ffast-math

After reading https://simonbyrne.github.io/notes/fastmath/ I think we
should drop -ffast-math. The JSON code actually looks for NaN, so the
fact it becomes unreliable kinda sucks.

Moreover, we don't do any number crunching. We use floating point fields
only sporadical for trivial math. Hence the optimization is entirely
unnecessary.
---

diff --git a/meson.build b/meson.build
index f8b1156455f..cc6981825eb 100644
--- a/meson.build
+++ b/meson.build
@@ -409,7 +409,6 @@ possible_cc_flags = possible_common_cc_flags + [
         '-Werror=missing-declarations',
         '-Werror=missing-prototypes',
         '-fdiagnostics-show-option',
-        '-ffast-math',
         '-fno-common',
         '-fno-strict-aliasing',
         '-fstack-protector',