LD Changes To Implicit DSO Linking Update
Richard W.M. Jones
rjones at redhat.com
Tue Feb 9 13:56:37 UTC 2010
On Tue, Feb 09, 2010 at 06:55:11AM -0500, Neal Becker wrote:
> Will there we a switch to give me the old behavior? I might want this for
> my own legacy code.
I have not tried it, but apparently --as-needed (or from gcc use
This option affects ELF DT_NEEDED tags for dynamic libraries
mentioned on the command line after the --as-needed option.
Normally the linker will add a DT_NEEDED tag for each dynamic
library mentioned on the command line, regardless of whether the
library is actually needed or not. --as-needed causes a DT_NEEDED
tag to only be emitted for a library that satisfies an undefined
symbol reference from a regular object file or, if the library is
not found in the DT_NEEDED lists of other libraries linked up to
that point, an undefined symbol reference from another dynamic
library. --no-as-needed restores the default behaviour.
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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