On Fri, 2020-03-27 at 10:10 +0100, Martin Liška wrote: > On 3/26/20 5:54 PM, Jeff Law wrote: > > On Mon, 2020-03-09 at 17:56 +0100, Martin Liška wrote: > > > On 3/9/20 4:36 PM, H.J. Lu wrote: > > > > We nee to support different variables, like TLS, data and bss variables. > > > > > > Why do we need TLS? Right now, it's not supported by nm. Or am I wrong? > > > > > > About BSS and DATA I agree that it would be handy. I can theoretically > > > covered with code in get_variable_section/bss_initializer_p. But it's > > > quite logic and I'm not sure we should simulate it. > > > > > > @Honza/Richi: Do you have any opinion about that? > > Or could we just fix the damn broken configure scripts? Isn't that what's > > driving all this nonsense? > > Hello. > > Yes. Apparently libtool people were unable to come up with a reasonable > workaround for that. One can read technical details in this PR: > https://sourceware.org/bugzilla/show_bug.cgi?id=25355 What's funny is that discussion doesn't mention the HP-UX bits which handle this correctly. However, I think my tests were all done without the common symbol handling change we made late last year. So that may complicate things.
> > > The HP-UX bits for this in configure work correctly. I verified that > > months > > ago and even have a sed script which will take a broken configure script and > > fix > > it. > > How many packages will you have to fix? IIRC it's less than a half-dozen. I found them by capturing the generated config.h files with and without LTO enabled and comparing them. I don't offhand know if the differences caused the packages to mis-behave or not -- we just failed any build where those config.h files differed. > > The current LTO plug-in extension will work fine with gcc10 + latest bintuils > release > branch. That's a viable solution for us openSUSE. If it's working, then great. But I worry about having to keep binutils/gcc consistent. In fact, what brought me into the conversation again was them getting out of sync in the last few days and binutils tests started failing. jeff