[ECOS] Linker flag : --gc-section

Jonathan Larmour jlarmour@redhat.co.uk
Tue Aug 8 14:51:00 GMT 2000

Fabrice Gautier wrote:
> Hi,
> This option is present in the example Makefile and I'm wondering what does
> this ld option does?
> I've just noticed that with this option I don't have undefined references
> where I should have ....

It garbage collects unused code and data for any objects compiled with any
of the options "-ffunction-sections -fdata-sections -fvtable-gc".

It only removes code/data that isn't referenced - you should still get
undefined references *if* the function/data the non-existant symbol is
referenced from is present. If the function/data a non-existant symbol is
referenced from isn't present, you won't get any undefined references to

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