Fixed missing javah in openJDK 10+

[Heckie75]

This is a change that fixes issue of missing javah in openJDK 10+

I know that it is not compatible with earlier Java versions.

[CRaFT4ik]

Works fine with Java 10+.

[d-f-clark]

When might this (and perhaps other changes for newer Java distributions) be merged into master? Trying to build tinyb on Raspbian Buster with OpenJDK 11 fails due to Java issues.

[Heckie75]

@d-f-clark
It seems that there aren't any changes in this project anymore. I suggest you to fork this project and fix the issues / applying PR in your fork.

BTW: Actually I also wanted to implement my bluetooth projects with Java, e.g. MipowPlaybulbTinyb but realized that it has not the expected stability. May be you take an alternative like bluez-dbus into account. However, I haven't validated this alternative yet.

[d-f-clark]

Thanks for the response. I actually used tinyb in a project back in 2017 and it worked fairly well, with some help from Petre at the time. Had hoped to use it again on a Raspberry Pi Zero project, but build issues have gotten in the way.

I do find it odd that in this day of IoT BlueZ is so far behind the BLE curve.

[renegrob]

This worked for me :)