tree 10074ce2096a810b8ff9e004823bceb6f541a195
parent 6d1d558109b5f5e53b31cc3325485dbb9f06d430
author Ian Lance Taylor <iant@golang.org> 1497418518 -0700
committer Ian Lance Taylor <iant@golang.org> 1497448184 +0000

go/build: use GCCGOTOOLDIR to find gccgo tools

Add the environment variable GCCGOTOOLDIR to permit overriding the default
directory where tools like cgo are found when building with gccgo.

This will be used by the cmd/go tests in a future CL.

Change-Id: I07855bd3f64cced1351183c0408ffa29741b7c3e
Reviewed-on: https://go-review.googlesource.com/45694
Reviewed-by: Than McIntosh <thanm@google.com>