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

[Saikrishna Arcot]

Updated build log.

** Attachment added: "openwalnut_1.4.0~rc1+hg3a3147463ee2-1ubuntu1_armhf-20140901-1222.build"
   https://bugs.launchpad.net/ubuntu/+source/openwalnut/+bug/1363962/+attachment/4193709/+files/openwalnut_1.4.0%7Erc1%2Bhg3a3147463ee2-1ubuntu1_armhf-20140901-1222.build

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Title:
  [FFe] openwalnut fails to build on Utopic armhf

Status in “openwalnut” package in Ubuntu:
  New

Bug description:
  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.

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