Question about BUILD_HEADLESS and HEADLESS (original) (raw)

Michael McMahon michael.x.mcmahon at oracle.com
Wed Feb 15 09:42:37 UTC 2012

The stub library is headless/libmawt.so*. Right? It's being built on Mac OS as well, but currently being put in a different location to the normal one. It also seems like it is not being used because if you rename or delete it, there isn't any change in behavior, which sounds like a bug.

So, what exactly is the function of the stub library? Is it to allow some functions of awt to work that don't require a real display?

In any case, I don't see why Mac should be different from Solaris or Linux in this respect.

On 14/02/12 17:27, Phil Race wrote:

On windows headless is simply a state. But Solaris/Linux have "true" headless builds where there are headless (stub) versions of UI libraries. And I think that headless is a valid JCK mode .. you can pass JCK in headless on platforms that don't support UI. But I'd check the JCK guys on that one, don't take my word for it.

-phk. On 2/14/2012 6:49 AM, Michael McMahon wrote: On 14/02/12 13:47, Fredrik Öhrström wrote:

Is the use of HEADLESS in gcc.make (linux and bsd) an archaeological remnant and should be removed? (No source in the hotspot repo looks a the HEADLESS define.)

Is there any reason to not build a headless version of awt? (ie modify BUILDHEADLESS to not be defined.) It seeems like headless is not currently built on bsd/macosx/windows, but it is built on solaris and linux? //Fredrik Fredrik, It's being built on macosx as well. - Michael.

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