<AWT Dev> [OpenJDK 2D-Dev] Request for Review: Remove import of empty JNI header files

Jim Graham james.graham at oracle.com
Fri Apr 27 13:37:12 PDT 2012

Thanks, sorry, I missed the part where this was responding to a change 
that is already under way in the new build system...


On 4/26/12 12:35 AM, Magnus Ihse Bursie wrote:
> On 2012-04-26 03:06, Jim Graham wrote:
>> Can we remove these "empty JNI" classes from a list of "javah" classes
>> somewhere so that we don't waste time generating the empty JNI headers?
> Good idea -- that's exactly what is being done in the new build system
> (the build-infra project)! :-)
> We added a new option to javac, which generates JNI headers
> automatically, if they are needed -- basically, if the class contains
> native methods *). So header generation is made always when needed and
> only when needed, quickly and as a part of normal compilation.
> Since these classes didn't have any native methods, the header files
> were not generated, and the compile of the native code failed since the
> #include pointed to non-exisiting files.
> *) Actually, sometimes classes with constants but without native methods
> are needed. In this case, the new annotation @GenerateNativeHeader is
> needed.
> /Magnus

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