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Re: Linking un-referenced function
- From: John Carter <john dot carter at tait dot co dot nz>
- To: Jason Lam <jlam555 at yahoo dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Tue, 23 May 2006 12:49:24 +1200 (NZST)
- Subject: Re: Linking un-referenced function
- References: <20060522233131.48322.qmail@web31703.mail.mud.yahoo.com>
On Mon, 22 May 2006, Jason Lam wrote:
I looked through the documents and couldn't find an
option to not link an un-referenced function into the
final image. Does GCC support it? Could someone
please help?
Tends to occur at the linker script level...
From the ld info file...
Input Section and Garbage Collection
....................................
When link-time garbage collection is in use (`--gc-sections'), it is
often useful to mark sections that should not be eliminated. This is
accomplished by surrounding an input section's wildcard entry with
`KEEP()', as in `KEEP(*(.init))' or `KEEP(SORT_BY_NAME(*)(.ctors))'.
John Carter Phone : (64)(3) 358 6639
Tait Electronics Fax : (64)(3) 359 4632
PO Box 1645 Christchurch Email : john.carter@tait.co.nz
New Zealand
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From this principle, all of life and physics may be deduced.