Hi,
I just landed bug 1036894 and related bugs on mozilla-inbound. The short
story is that things should now be less cumbersome.
For most cases in the tree, where you want to add something to libxul,
things are mostly unchanged: just add
FINAL_LIBRARY = 'xul'
or
FINAL_LIBRARY = 'gkmedias'
as appropriate. You don't need a LIBRARY_NAME in this case. Note that
as of bugs 1041860 and 1041864, we don't have the useless intermediate
libraries like gklayout or necko, etc. which at this point were only
left because that's how things have been for 10+ years. No more
wondering what specific FINAL_LIBRARY you need to use (as someone asked
me recently on irc).
For other cases, where you want to link a shared library or an
executable, things have improved, although they are work-in-progress.
If you have had to do that in the past, you may have wondered if you
needed to use SHARED_LIBRARY_LIBS, EXTRA_DSO_LDOPTS, EXTRA_LIBS, LIB, or
whatever else.
With bug 1036894, for in-tree moz.build-managed libraries, there's only
USE_LIBS to define in moz.build. Other libraries, for now, still need
to be defined in EXTRA_LIBS or OS_LIBS, with the semantics defined in
https://hg.mozilla.org/integration/mozilla-inbound/rev/a0988e587a90
USE_LIBS takes a list of LIBRARY_NAMEs as defined in other moz.build
files, possibly prefixed with a path if there are ambiguities. The build
system will figure things out from there.
The current downside is that for programs, you currently need some
boilerplate like ['mozalloc', 'xpcomglue_s', 'xul'], but that will be
sorted out soon (bug 1041941).
More details on
https://hg.mozilla.org/integration/mozilla-inbound/file/tip/build/docs/defining-binaries.rst
as well as somewhere in
https://ci.mozilla.org/job/mozilla-central-docs/Tree_Documentation/
when it's merged on mozilla-central.
Cheers,
Mike
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