gcc in natty now passes --as-needed by default to the linker
Matthias Klose
doko at ubuntu.com
Mon Nov 15 11:26:27 GMT 2010
There is a second change to the linking in natty; as announced in [1],
--no-add-needed/--no-copy-dt-needed-entries is passed by default, with the
current gcc in natty, --as-needed is passed as well. Please see [2] for
implications (runtime failures) and a list of packages which might be affected.
To revert this change on a per package basis, pass --no-as-needed to the linker
(-Wl,--no-as-needed in LDFLAGS). To add an explicit dependency on a library use
--no-as-needed -lfoo --as-needed.
Please tag bug reports with `as-needed' if you see runtime failures caused by
this change (mostly unresolvable symbols referenced by plugins and ldopened
objects).
Matthias
[1] https://lists.ubuntu.com/archives/ubuntu-devel-announce/2010-October/000772.html
[2] http://wiki.debian.org/ToolChain/DSOLinking#Onlylinkwithneededlibraries
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