[Buildroot] [autobuild.buildroot.net] Build results for 2014-06-09

[Yann E. MORIN <yann.morin.1998@free.fr>]

Thomas, Maxime, All,

On 2014-06-10 22:47 +0200, Thomas Petazzoni spake thusly:
> >        arm |                  qt5base-5.3.0 | NOK | http://autobuild.buildroot.net/results/3cd168b929bd65a6b9e5d3abbabb6c97ac1d0f08/
> 
> Qt5/RaspberryPi problem:
> 
> .obj/qeglfshooks_pi.o: In function `QEglFSPiHooks::platformDisplay() const':
> qeglfshooks_pi.cpp:(.text+0x38): undefined reference to `vc_dispmanx_display_open'
> .obj/qeglfshooks_pi.o: In function `QEglFSPiHooks::platformDestroy()':
> qeglfshooks_pi.cpp:(.text+0x5c): undefined reference to `vc_dispmanx_display_close'
> 
> Yann, Maxime, you are our RPi experts.

OK, I have the starting of an idea of why it fails.

rpi-userland installs libEGL.so and libGLESv2.so, and their associated
.pc files.

rpi-userland also installs a bunch of helper libraries, of which
libbcm_host.so and its associated .pc file.

However, one of the missing symbol vc_dispmanx_display_open is referenced
in both libEGL.so and libbcm_host.so.

That symbol is provided by libvchostif.so, but neither egl.pc nor
bcm_host.pc declare a dependence on libvchostif, although they both have
it as a DT_NEEDED tag.

So, the .pc files are wrong. But the linker should follow the DT_NEEDED
tags, no?

As a side note, if we fix this, we might be able to fix the other
packages that were dirty-patched to include the proper libs (libcec and
XBMC so far.)

Well, that's all for now. More on that tomorrow.

Regards,
Yann E. MORIN.

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