[lttng-dev] [PATCH] Fix linker library order

[Jérémie Galarneau]

Francis has already submitted a patch but we could also add a
"--disable-examples" switch to configure if hand-crafted Makefiles
become a problem.

On Tue, May 14, 2013 at 4:51 PM, Alexandre Montplaisir
<alexmonthy at voxpopuli.im> wrote:
> On 13-05-14 01:38 PM, Simon Marchi wrote:
>> [...]
>>
>> If you read carefully the log sent by Alexandre, you see that it is
>> when building the shared libs in this directory
>> (lttng-ust-provider-ust-tests-demo.so) that the build fails. I don't
>> know why it fails, but Alexandre hinted that passing "-fPIE -pie" to
>> build a shared library is weird (it is usually -fPIC -pic). I am not
>> sure where that comes from. This behaviour only happens when building
>> the package, not when building manually.
>
> We build the daily packages with all Debian security options (this is
> kind of a future-proofing to find problems like this one, I don't think
> the "real" Debian packages use it).
>
> See
> http://wiki.debian.org/Hardening#DEB_BUILD_HARDENING_PIE_.28gcc.2Fg.2B-.2B-_-fPIE_-pie.29
>
> So far it handled the autotools-powered Makefiles correctly (libraries
> are built with -fPIC, binaries with -fPIE), but it seems to cause
> problems with hand-written Makefiles like the one in doc/examples/demo.
>
> We could fix it with a package-specific patch, either by using autotools
> to build this directory, or maybe not building it at all, since it's
> just an example that we don't install...
>
>
> Thanks all,
> Alex
>
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-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com