Re: How to use --gc-sections?

[Grant Edwards <grante at visi dot com>]

> I'm stumped: I can't figure out how to discard unused functions
> using the -ffunction-sections and --gc-sections options to gcc
> and ld.  I know I've gotten it to work in the past with an ARM
> target, but now I can't seem to get it to work with an H8
> target.

FWIW, this seems to be something specific to the H8 target.

Building with exactly the same source files and makefile using
an m6812 tool-chain results in unused functions being discarded
as advertised.  Both tool-chains were built using identical
build-scripts from the same source trees.

I think it's a linker problem, since it looks like gcc is doing
what it's supposed to: the functions are indeed in separate
sections with the proper names, but ld just isn't doing the
garbage collection.

-- 
Grant Edwards
grante@visi.com

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