[OpenJDK 2D-Dev] RFR(XS): 8213944: Fix AIX build after the removal of Xrandr.h and add a configure check for it

[Philip Race]

Hmm. I don't like the ifdefs.

Xrandr is a requirement for the build. If its not there at runtime 
that's OK.

-phil.

On 11/15/18, 8:06 AM, Volker Simonis wrote:
> Hi,
>
> can I please have a review for the following small change:
>
> http://cr.openjdk.java.net/~simonis/webrevs/2018/8213944/
> https://bugs.openjdk.java.net/browse/JDK-8213944
>
> Change JDK-8210863 removed the Xrandr.h/randr.h headers from the
> OpenJDK sources but forgot to add a configure check for the Xrandr
> extension which is now a build dependency.
>
> The change also broke the AIX build. AIX never supported Xrandr, but
> that was only detected at runtime, when the JDK was unable to
> dynamically load libXrand.so. Now, without Xrandr.h/randr.h in the
> source tree any more, we have to conditionally compile some parts of
> src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c such
> that it doesn't require the definitions and declarations from
> Xrandr.h/randr.h any more.
>
> Thank you and best regards,
> Volker