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From: Chapman Flack <[email protected]>
Subject: [Pljava-dev] [solved] Re:  Mac OS X expertise needed
Date: Mon, 09 Nov 2015 18:50:13 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

> So what would be making the OS X linker think it has to resolve them all
> at link time?  Is there an extra option it needs telling it "relax, leave
> things undefined, you're building a dylib"?  It is already being passed
> the -dynamiclib option. Do all the extern symbols need some special extra
> annotation in OS X?

It turns out in OS X there is a distinction between a .dylib and a .bundle
(the nar-maven-plugin calls them 'shared' and 'plugin' respectively, which
are equivalent on other platforms, but different on OS X).

Only a .bundle (plugin) is supposed to have unresolved refs back into the
thing that's going to load it. A .dylib should only have refs into its
link-time dependencies.

The PL/Java pom said 'shared', which was no problem on non-OS X platforms,
but should really be 'plugin'.

When the change is merged, it will have the side effect of changing the
path where the built file is found under pljava-so/target (the word
shared becomes plugin, both places), meaning a change to Bear's build
instructions on the wiki.

PGXS also knows how to build 'plugin's, and it coerces the file extension
back to the Unixy .so instead of the OS X .bundle. Maven gives them the
.bundle extension conforming to OS X practice. That could just be covered
in docs for Mac installation, or the build could be made to rename the file
to .so.

-Chap
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