plugin: using stdlib package plugin from within non-main package doesn't work as expected

[typetetris]

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version devel +5d1b53a Wed Nov 30 19:46:00 2016 +0000 linux/amd64

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/erwo/golang-plugin"
GORACE=""
GOROOT="/home/erwo/go-devel"
GOTOOLDIR="/home/erwo/go-devel/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build569578387=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

What did you do?

Wrote a non-main package using stdlib package plugin to open a plugin.

https://github.com/erwo42/golang-plugin

Just run from within the workdir of a clone of above repo:

go install indirect
go build -buildmode=plugin testplugin
bin/indirect

What did you expect to see?

Yay!

What did you see instead?

2016/11/30 22:00:03 plugin.Open: plugin was built with a different version of package runtime

Other maybe relevant issues

#17928
#17150

[crawshaw]

What do you see if you build the binary "indirect" with -gcflags=-dynlink?

[typetetris]

It is still the same message.

erwo@vm-debian:~/golang-plugin$ export GOPATH=$(pwd)
erwo@vm-debian:~/golang-plugin$ go version
go version devel +16c3399 Thu Dec 1 07:17:51 2016 +0000 linux/amd64
erwo@vm-debian:~/golang-plugin$ go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/erwo/golang-plugin"
GORACE=""
GOROOT="/home/erwo/go-devel"
GOTOOLDIR="/home/erwo/go-devel/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build228390996=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
erwo@vm-debian:~/golang-plugin$ go install -gcflags=-dynlink indirect
erwo@vm-debian:~/golang-plugin$ go build -buildmode=plugin testplugin
erwo@vm-debian:~/golang-plugin$ bin/indirect
2016/12/01 18:37:04 plugin.Open: plugin was built with a different version of package runtime
erwo@vm-debian:~/golang-plugin$

[cherrymui]

Does it work with tip now? It works fine for me on both linux/amd64 and darwin/amd64.

$ git clone https://github.com/typetetris/golang-plugin.git
Cloning into 'golang-plugin'...
remote: Counting objects: 19, done.
remote: Compressing objects: 100% (11/11), done.
remote: Total 19 (delta 3), reused 19 (delta 3), pack-reused 0
Unpacking objects: 100% (19/19), done.
$ cd golang-plugin
$ GOPATH=$PWD go install indirect
$ GOPATH=$PWD go build -buildmode=plugin testplugin
$ bin/indirect 
Yay!