oj.h not found

[Vinay <vinaykeshava@aol.com>]

Hello All,
I'm building oj-introspect(0.7.1) required for gitlab, but the build 
fails due to missing header oj.h from ruby-oj.

Here is the log https://paste.debian.net/1264953/

It seems to be a upstream issue 
https://github.com/meinac/oj-introspect/issues/4
any fix for this ?


Thanks

Vinay Keshava