RFR: JDK-8072842 Add support for building native JTReg tests

[Magnus Ihse Bursie]

On 2015-02-11 13:08, Staffan Larsen wrote:
>
>>>>>>> Okay so if I just cd into hotspot/test and use the Makefile to try
>>>>>>> and run some jtreg tests it looks to me that it will define an
>>>>>>> invalid -nativepath
>>>>>>
>>>>>> I'm not sure if that is a supported use case. David or Staffan will
>>>>>> have to answer to that. I have not tested that, only the "whole
>>>>>> forest" approach.
>>>>>
>>>>> I’ve never done that. I’m always running all make commands from 
>>>>> the top
>>>>> level. Is there a problem with that?
>>>>
>>>> I must confess I also haven't done that - though I often run jtreg 
>>>> directly from there. Other hotspot engineers may use it. If nothing 
>>>> else it would be a way to test out what you expect JPRT to be running.
>>>>
>>>> But perhaps we just don't add the -nativepath component if 
>>>> TESTNATIVE_DIR remains unset?
>>>
>>> Not adding -nativepath or adding it with an empty path will lead to 
>>> the same errors I think: tests that need native code will fail. So 
>>> it does not really matter.
>>
>> If you add it with an invalid path (won't be empty as the variable is 
>> only a prefix) then tests that don't need native code may also fail. 
>> Though I don't know how jtreg responds to a non-existent nativepath.
>
> You are right. Jtreg validates the that the path is a directory. So 
> better not to specify it.

Ok. I have updated the webrev, so the -nativepath: argument is only 
specified if we indeed have been given a valid path to the native libraries.

The only changes between this and the previous webrev is in 
hotspot/test/Makefile and jdk/test/Makefile.

http://cr.openjdk.java.net/~ihse/JDK-8072842-build-native-jtreg-tests/webrev.02

/Magnus