I'm reporting this bug because the package in summary fails to build when forcing --as-needed on through spec files (check out http://blog.flameeyes.eu/2008/11/14/problems-and-mitigation-strategies-for-as-needed for details).
Please note that this bug _might_ apply to -Wl,--as-needed in LDFLAGS as well; in both cases it should be fixed. Also, if this is due to the package in question not respecting user-defined LDFLAGS, you should get to fix that too.
Check the attached build log.
Created attachment 196685 [details]
Created attachment 215856 [details, diff]
adding patch to ebuild, running autotools, adding IUSE, adding optional depends
1. lsyncd can be build without libxml2 -> adding IUSE=xml
2. it's missing depend when build with xml support (it was default)
Created attachment 215857 [details, diff]
fixing as-needed issues
also slightly rebuilding configure.in to make it simpler and respect USE flags
(In reply to comment #2)
> Created an attachment (id=215856) [details]
> adding patch to ebuild, running autotools, adding IUSE, adding optional depends
If you bump the ebuild to EAPI=2, you can move the epatch+eautoreconf to src_prepare, move the econf to src_configure, and use the default implementations of src_unpack and src_compile.
(In reply to comment #4)
> If you bump the ebuild to EAPI=2, you can move the epatch+eautoreconf to
> src_prepare, move the econf to src_configure, and use the default
> implementations of src_unpack and src_compile.
True, but it's not my package. Things like EAPI change are maintainer's privilege. I've only added things necessary for package to work properly.
+ 29 Jun 2010; Samuli Suominen <email@example.com> lsyncd-1.33.ebuild,
+ Fix building with -Wl,--as-needed wrt #276506 by Kacper Kowalik.