tree f4a74a367bd7524ad09075761dcda0a38d887794
parent 1139b11e3e37d6e31849f5b9f64ba072633aadc6
author Bryan C. Mills <bcmills@google.com> 1527287796 -0400
committer Bryan C. Mills <bcmills@google.com> 1527712789 +0000

cmd/racebuild: improve reproducibility of .syso builds

Use a known version of MinGW on Windows. (On other platforms, we use
whatever compiler is already installed on the system image.)

Test at a well-defined Go commit.

Record the Go and LLVM commits for each platform independently.
Extracting the C++ toolchain version is left for future work, but it
should be recoverable from the resulting .syso file anyway.

Change-Id: I9af1d2a6f540a4d276b87074864564bf989e4731
Reviewed-on: https://go-review.googlesource.com/115375
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>