[Bug 1363962] [NEW] [FFe] openwalnut fails to build on Utopic armhf

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Scott Kitterman (kitterman):

This is a bugfix-only update.

The openwalnut package currently fails to build on Utopic armhf. This is
partly because of a typedef conflict error between OpenSceneGraph and
Qt4 and partly because of the use of a constant that is only present in
OpenGL and OpenGL ES 1.x (not in OpenGL ES 2.0). For the first bug, an
#include is added before all other includes to have the typedef and a
#define assigned for it. For the second bug, that section of the code
(which is the code that controls line smoothing) is excluded for armhf.
While this means that openwalnut compiles, line-smoothing will not work.
(I believe the proper way to do this in OpenGL ES 2.0 is to use
multisampling.)

In addition, I added a patch that ensures that OpenGL ES is used if
requested, and sets the libraries to link to to include OpenGL ES 2.0.

Considering that this package did not previously compile on armhf, the
risk of causing this package to break builds for dependent packages (if
any) are low. However, there is a functionality loss for armhf, since
line-smoothing will not work.

** Affects: openwalnut (Ubuntu)
     Importance: Undecided
         Status: New

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[FFe] openwalnut fails to build on Utopic armhf
https://bugs.launchpad.net/bugs/1363962
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