isis:
Tim Wilson-Brown - teor transcribed 12K bytes:
Note the go bootstrap process has changed now that go is entirely written in go:
The new build process for Go 1.x (x ≥ 5) will be:
• Build cmd/dist with Go 1.4. • Using dist, build Go 1.x compiler toolchain with Go 1.4. • Using dist, rebuild Go 1.x compiler toolchain with itself. • Using dist, build Go 1.x cmd/go (as go_bootstrap) with Go 1.x compiler toolchain. • Using go_bootstrap, build the remaining Go 1.x standard library and commands.
https://docs.google.com/document/d/1OaatvGhEAq7VseQ9kkavxKNAfepWy2yhPUBs96FG...
Tim Wilson-Brown (teor)
I've not tried it yet, but it's my understanding that gccgo can still be used to compile go-1.5:
https://github.com/golang/go/issues/10092
So another route might be to modify our build of GCC to include gccgo, then use that to bootstrap the official Go compiler.
I never tried using gccgo to bootstrap as using go_1.4 is rather easy in practice using the official tooling:
# 1. Build a go1.4 using GCC.
git clone https://github.com/golang/go.git cp -r go go_bootstrap ( cd go_bootstrap; git checkout origin/release-branch.go1.4 ) ( cd go_bootstrap/src/ && ./all.bash )
# 2. Now build a go1.5 using the go1,4 export GOROOT_BOOTSTRAP=$PWD/go_bootstrap ( cd go && git checkout origin/release-branch.go1.5 ) ( cd go/src/ && ./all.bash )
# 3. And now do echo "PATH=$PATH:$PWD/go/bin" >> .profile Cheers!