Error when emerging ffmpeg

[121488]

Hi,

I get the following errors when trying to emerge ffmpeg. Any ideas what I can do to resolve this?

[krinn]

the ‘asm’ operand has impossible constraints is because gcc is starving registers, once gcc have no way to backup and find one free register for the needed operation, it will emit the "impossible constraints", as a "hey i need put that ball in that hole, to do so i need to move away the one that is in to another hole first, but there's just no hole to move it to! impossible"

this should of course appears on 32bits build.
your solve is:
* do not build 32bits version
* drop -fomit-frame-pointer because it take an extra register, and it's too much here
* reduce pressure on registers (another way to do that is by dropping need of registers, avx, sse2... take the one you wish lost, you might also build a less optimize 32bits and keep high optimization for the 64bits version)
* disable lto
* report and wait for a fix
Pick the one you think is the more acceptable for you.

[Josef.95]

Disable the LTO Stuff should probably help.

[fedeliallalinea]

https://bugs.gentoo.org/645778
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[121488]