getting undefined: X_GoV8 on install

[paetling]

here is the final output of attempting to run ./go/build.sh install:

cd /Users/paetling/gc/gc/servertooth_go/src/github.com/sony/v8eval/go/v8eval
/usr/local/go/pkg/tool/darwin_amd64/compile -o $WORK/github.com/sony/v8eval/go/v8eval.a -trimpath $WORK -p github.com/sony/v8eval/go/v8eval -complete -buildid e5c9b41c69fd04b9e1a776f6ec77f19245d2ba69 -D _/Users/paetling/gc/gc/servertooth_go/src/github.com/sony/v8eval/go/v8eval -I $WORK -pack ./v8.go
# github.com/sony/v8eval/go/v8eval
./v8.go:36: undefined: X_GoV8
# github.com/sony/v8eval/go/v8eval
./v8.go:36: undefined: X_GoV8
FAIL    github.com/sony/v8eval/go/v8eval [build failed]

I am running on a mac with version 10.11.3 and have go version go1.5.1. I am not sure what is actually going wrong and am trying to investigate. But thought I would submit an issue to see if you had any suggestions or if there is anything obvious I am missing?

[paetling]

Update installation on Ubuntu 14.04 with go version: go1.5.1 also fails with the same error.

[YoshiyukiMineo]

v8eval requires SWIG, which generates X_GoV8. What version of SWIG do you use?

[paetling]

I see. I did not have swig installed on my mac. Once I installed that I was able to install. Am trying the linux installation now.

Linux also worked.
Thanks for the help