В Tue, 29 May 2018 12:33:00 +0500
"Nikita Zlobin" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender
"cook60020tmp" for DMARC) пишет:
In Mon, 28 May 2018 19:18:51 +0100
Will Godfrey <willgodfrey@xxxxxxxxxxxxxxx> wrote:
This brings up another interesting question: Why does the
CMake-Builfile add -fno-finite-math-only to the "better optimised"
setups, but leaves it out from the fallback case, which is
I was specifically asked to do that by one of the distro
maintainers, and also take the sse options out. Following on from
that, I'm a bit concerned that the debian people seem to have
ignored V1.5.7 :(
Now if we really can reduce most of this to -march=native I'd be
very happy, although again the distro pakagers would want to
disable that for multi-arch work.
Finally, as I've said before, I'm very cautious about making changes
here - there always seem to be unitended consequences :(
Strange, they don't try to set cflags/cxxflags from env.
Even so, with cmake options to toggle different architectures they
just need generic (basic) level.
Strange, in gcc man: "If -march is specified without either of -mtune
or -mcpu also being specified, the code is tuned to perform well
across a range of target processors implementing the target
architecture." But i remember, gentoo docs tell, that using -mtune /
-mcup with -march is redundant, just like -msse, -mavx, etc. Mazed.
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