Wayland McWayface tutorial project done, feedback on jextract

Maurizio Cimadamore maurizio.cimadamore at oracle.com
Mon Mar 4 21:38:21 UTC 2019


So, to make sure I understand the issue

the command line looked like:

-C"-DWLR_USE_UNSTABLE"

and nothing was passed onto clang?

If so, I think we should investigate, as it sounds like an option 
parsing issue.

Thanks
Maurizio

On 04/03/2019 20:33, Mark Hammons wrote:
> Thanks, I'll look forward to it! On a side note, I've released a new 
> version of my project that finally has the sbt jextract integration 
> working properly. It turns out that the -C parameter didn't like the 
> quotes I was putting around "-DWLR_USE_UNSTABLE" and not recognizing 
> the option, so that option wasn't being passed to clang, and clang 
> won't work with this version of wlroots unless that option is passed. 
> I found this out when I reimplemented the functionality using scala's 
> process api instead of the toolprovider api. Still not sure why the 
> tool provider wasn't printing that error message but oh well.
>
> On 3/4/19 12:01 PM, Maurizio Cimadamore wrote:
>>
>> On 04/03/2019 10:26, Mark Hammons wrote:
>>> One last question. As I mention in my readme, I've written a binding 
>>> for stdlib's setenv function in scala as opposed to getting jextract 
>>> to generate it for me (because of the concerns I voiced before). 
>>> It's in the package usr.include in the scala source code. Is it 
>>> necessary that I define the header file at all in these bindings? 
>>> I'd imagine I'd normally have to include the library to link against 
>>> (but it's not necessary since it's part of libc), but if I can leave 
>>> out the header annotation it's easier to make semi-platform 
>>> independent bindings like what I could do with jnr. 
>>
>> Two answers here. In the long run, it is very likely that, as Panama 
>> gets mature, we'll start seeing 'official' stdlib and/or posix Java 
>> libraries (maybe in the JDK, maybe not).
>>
>> Another answer - it will eventually be possible to go 'lower level' 
>> and obtain method handles to model native function calls 
>> programmatically, w/o necessarily going through an annotated 
>> interface, using just the Layout API. I will share more on that story 
>> at a later point, but stay tuned.
>>
>> Maurizio
>>
>>
>>


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