Hello Ludovic, Sorry for taking so long time. I discus with the developper upstream. Here is what he tells me: --------------------------------- Even if it builds SSE support, it will only be used at runtime if the platform supports it. It uses CPUID internally to detect the CPU capabilities when run. ------------------------------- He will also add a note to clarify things in the next release! Thanks. Le 29 mai 2019 09:44, "guy fleury iteriteka" a écrit : > Hi, > > I will try! > Le 27 mai 2019 16:52, "Ludovic Courtès" a écrit : > >> Hi, >> >> guy fleury iteriteka skribis: >> >> > * gnu/packages/image-viewers.scm(chaffa): New variable. >> >> I’d suggest the changes below. >> >> Additionally, this code detects SSE4.1 and related instruction set >> extensions at configuration time. As a result, I think the resulting >> code may not run on all x86_64 machines. >> >> Could you investigate this and see how we can get a generic binary? >> >> Thanks, >> Ludo’. >> >>