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cmd/go, cmd/compile: match tool versions

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This change passes runtime.Version from the go tool to the compiler.
If the versions do not match, the compilation fails.
The result is a go tool from one GOROOT will complain loudly if it
is invoked with a different GOROOT value.

Only release versions are checked, so that when developing Go
you can still use "go install cmd/go" and "go install cmd/compile"
separately.

Fixes #19064

Change-Id: I17e184d07d3c1092b1d9af53ba55ed3ecf67791d
Reviewed-on: https://go-review.googlesource.com/42595
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
David Crawshaw 2017-05-04 13:58:27 -04:00
parent 9dd70591c5
commit 98b3e3a064
4 changed files with 40 additions and 0 deletions
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7
src/cmd/compile/internal/gc/main.go
View file

@ -222,6 +222,8 @@ func Main(archInit func(*Arch)) {
flag.StringVar(&cpuprofile, "cpuprofile", "", "write cpu profile to `file`")
flag.StringVar(&memprofile, "memprofile", "", "write memory profile to `file`")
flag.Int64Var(&memprofilerate, "memprofilerate", 0, "set runtime.MemProfileRate to `rate`")
var goversion string
flag.StringVar(&goversion, "goversion", "", "required version of the runtime")
flag.StringVar(&traceprofile, "traceprofile", "", "write an execution trace to `file`")
flag.StringVar(&blockprofile, "blockprofile", "", "write block profile to `file`")
flag.StringVar(&mutexprofile, "mutexprofile", "", "write mutex profile to `file`")
@ -242,6 +244,11 @@ func Main(archInit func(*Arch)) {
usage()
}
if goversion != "" && goversion != runtime.Version() {
fmt.Printf("compile: version %q does not match go tool version %q\n", runtime.Version(), goversion)
Exit(2)
}
thearch.LinkArch.Init(Ctxt)
if outfile == "" {