Bootstrap the Go parts of the Go toolchain using Go 1.4,
as described in https://golang.org/s/go15bootstrap.
The first Go part of the Go toolchain will be cmd/objwriter,
but for now that's just an empty program to test that this
new code works.
Once the build dashboard is okay with this change,
we'll make objwriter a real program depended upon by the build.
Change-Id: Iad3dce675571cbdb5ab6298fe6f98f53ede47d5c
Reviewed-on: https://go-review.googlesource.com/3044
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Can't use bgwait, both because it can only be used from
one goroutine at a time and because it ends up queued
behind all the other pending commands. Use a separate
signaling mechanism so that we can notice we're dying
sooner.
Change-Id: I8652bfa2f9bb5725fa5968d2dd6a745869d01c01
Reviewed-on: https://go-review.googlesource.com/3010
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This CL introduces the bootstrap requirement that in order to
build the current release (or development version) of Go, you
need an older Go release (1.4 or newer) already installed.
This requirement is the whole point of this CL.
To enforce the requirement, convert cmd/dist from C to Go.
With this bootstrapping out of the way, we can move on to
replacing other, larger C programs like the Go compiler,
the assemblers, and the linker.
See golang.org/s/go15bootstrap for details.
Change-Id: I53fd08ddacf3df9fae94fe2c986dba427ee4a21d
Reviewed-on: https://go-review.googlesource.com/2470
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
This CL makes the next one have nice cross-file diffs.
Change-Id: I9ce897dc505dea9923be4e823bae31f4f7fa2ee2
Reviewed-on: https://go-review.googlesource.com/2471
Reviewed-by: Ian Lance Taylor <iant@golang.org>
