Messages in this thread | | | Subject | Re: [PATCH 3/4] Add __global tag where needed. | From | David Woodhouse <> | Date | Fri, 25 Aug 2006 10:52:26 +0100 |
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On Thu, 2006-08-24 at 23:30 +0200, Adrian Bunk wrote: > Applying this doesn't seem to make much sense until it's clear whether a > "build everything except for assembler files at once" approach (that > needs less globals) or your current "compile only multi-obj at once" > approach (that requires more globals).
For the kernel itself, I think that building a directory at once is the way forward. For modules, obviously the scope is more limited.
Either way, I'd like to prevent the unnecessary proliferation of __global by instrument the link process somehow so that we get a _warning_ during the final link if there are any global symbols which aren't actually used. Having said that, --gc-sections will happily drop them from the vmlinux anyway so I'm not _overly_ concerned by it.
In fact, I think binutils got patched recently so that it can _tell_ us what sections got dropped by --gc-sections, which would do the job nicely.
-- dwmw2
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