by m.gebetsr:

I've nearly all cross-compiler activated for go and thus my timestamp on
/opt/go/src/pkg/runtime/ is newer than /opt/go/pkg/*/runtime/* for all but the last
compiled runtime.

Seems go tries to match the timestamps and automatically recompiles if if thinks some
files are out of date. BUT there are 2 problems here:

  1. every cross-compiler creates files in /opt/go/src/pkg/runtime/, thus the directory has the timestamp of the last cross-compiled runtime.

  2. go tries to recompile system installed files

Command fixing the problem:
touch /opt/go/pkg/linux_amd64/runtime/*
After this command go does not try to recompile runtime/cgo anymore.

What steps will reproduce the problem?
- Cross compile helper script to setup the go environment:
https://gist.github.com/4702669
- the problem was with go-mtpfs, though it does have nothing to do with the real problem
- go get github.com/hanwen/go-mtpfs

What is the expected output?
<nothing>

What do you see instead?
go install runtime/cgo: open /opt/go/pkg/linux_amd64/runtime/cgo.a: permission denied

Which compiler are you using (5g, 6g, 8g, gccgo)?


Which operating system are you using?
linux/amd64

Which version are you using?  (run 'go version')
go version go1.0.3

Please provide any additional information below.
% go env
GOARCH="amd64"
GOBIN=""
GOCHAR="6"
GOEXE=""
GOGCCFLAGS="-g -O2 -fPIC -m64 -pthread"
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/gebi/go"
GOROOT="/opt/go"
GOTOOLDIR="/opt/go/pkg/tool/linux_amd64"
CGO_ENABLED="1"