Re: [PATCH v2 0/4] Add support for compiling with -ffunction-sections-fdata-sections

[Anders Kaseorg]

On Mon, 20 Apr 2009, Arjan van de Ven wrote:
> an alternative approach would be to have a special build target that
> uses this, but makes a 2nd vmlinux, and then runs a diff on the symbols
> against the regular one... and finds which functions got dropped.
> Some patient soul can then go about and stick in ifdefs and stuff...

We wouldnât even need a 2nd vmlinux for that.  Once we can compile with 
-ffunction-sections -fdata-sections, we can just ask the linker to print 
the list of unused sections that it removed (--gc-sections 
--print-gc-sections).

Anders
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