On Tue, Nov 03, 2015 at 03:09:52PM +0000, James Le Cuirot wrote: > On Tue, 3 Nov 2015 08:56:29 -0600 > William Hubbs <willi...@gentoo.org> wrote: > > > As has been pointed out in the thread so far, gcc-5 only supports > > go-1.4. dev-lang/go is at 1.5, so really the only thing that should be > > built with gccgo is dev-lang/go. Also, the golang eclasses are > > designed to work with dev-lang/go, so they do not need a dependency > > on gccgo. > > > > I see gcc-5[go] as a separate Go compiler, but it will always be > > behind dev-lang/go, so you will have things that build with > > dev-lang/go but not gccgo. Also, the commands to do the builds are > > completely different depending on which one you are using. > > This is a lot like the situation with gcc's gcj and the icedtea Java > JDK. The arguments are quite different so we have a wrapper script > packaged as gcj-jdk. gcj only supports Java 6(ish?) and there are > other compatibility issues though so we no longer support it as a > general purpose JDK. Its only use is for bootstrapping icedtea. Now > that Java has been open sourced and gcj has fallen so far behind, gcc > are planning to scrap it so icedtea will need to find another way to > bootstrap (probably JamVM) if it isn't to rely on prebuilt versions of > itself.
I am definitely not against the patch to enable gccgo on all platforms. This actually may make it possible for us to bootstrap dev-lang/go on all of the platforms gccgo can be built on. However, the situation with gcj sounds very similar to what is happening with Go, and I want to take the same approach. I do not recommend using gccgo as a general-purpose Go compiler. I may be able to use it to bootstrap the general purpose compiler, which is dev-lang/go, but That will probably be about it since it will always be behind. I am against virtual/go. If you want to enable gccgo go ahead, but please do not create virtual/go. Gccgo should only be used in special cases, for example bootstrapping dev-lang/go. William
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