Pass --exclude-config programatically

[ppalaga]

--exclude-config was introduced in oracle/graal#3179
It would be nice to be able to pass it programatically from a Quarkus extension

[geoand]

@galderz do you plan on making this available for easy use in Quarkus?

[galderz]

@geoand No, that's not something I'm looking into.

[geoand]

Thanks for the info @galderz.

I assume that at some point this is something we would want to have in Quarkus

[geoand]

@Sanne this is something you wanted as well, right?

[Sanne]

@Sanne this is something you wanted as well, right?

Right! We have an immediate need in the case of the Oracle JDBC driver, and I totally expect more libraries in the future to occasionally include some mistakes, which we would only be able to work around when we have this.

[geoand]

@galderz how would one access this programmatically from a Feature?
I am not even sure though that it makes sense to add it to the Feature, maybe it's best we add it to the command line arguments.

[galderz]

@geoand I don't think doing this a Feature is possible. The code that excludes jars/resources works in the 1st stage of native-image, the driver phase. This phase constructs a java invocation for the second phase and hence we exclude things to being passed on to the 2nd phase, where Feature instances and others come into play.

I would expect that each extension would define 0..N exclude-config parameters (see examples here), and then native image would take all of those and pass them in as parameters to native-image invocation.

[geoand]

Gotcha. I'll look into it hopefully sometime soon

[Sanne]

Features should be able to change the flags which we feed into the native-image process

[galderz]

Ah, you mean Quarkus Features? I thought @geoand was referring to GraalVM Features... :)

[geoand]

Yes, I did mean GraalVM Features

[Sanne]

ah ok. Yes it definitely needs to be at the level of command line arguments, anything else would be too late.

[geoand]

I opened #19649, but the problem is that I can't seem to get native-image work with multiple --exclude-config options, so I'll need @galderz's help with that

UPDATE:

PR fixed with the help of @jaikiran