Bug 68926

Summary:	cmake use MesaGL by default instead of libGL
Product:	Gentoo Linux	Reporter:	Tom Hosiawa <tomek32>
Component:	New packages	Assignee:	Lisa Seelye (RETIRED) <lisa>
Status:	RESOLVED WONTFIX
Severity:	major
Priority:	High
Version:	unspecified
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	Patch to fix opengl library search order in FindOpenGL.cmake /FindOpenGL.diff

Description Tom Hosiawa 2004-10-25 21:55:31 UTC

cmake searches for MesaGL, then libGL due to the order set in the config file. Therefore, this is always finding MesaGL, instead of /usr/lib/libGL.so which is set by opengl-update.

by changing the order in /usr/share/cmake/Modules/FindOpenGL.cmake, we can fix this

Reproducible: Always
Steps to Reproduce:

Comment 1 Tom Hosiawa 2004-10-25 21:58:33 UTC

Created attachment 42597 [details, diff]
Patch to fix opengl library search order in FindOpenGL.cmake

Comment 2 Seemant Kulleen (RETIRED) gentoo-dev

2004-10-26 19:13:56 UTC

this should probably be sent upstream too

Comment 3 Tom Hosiawa 2004-10-26 19:32:40 UTC

done
http://www.vtk.org/Bug/bug.php?op=show&bugid=1287&pos=0

Comment 4 Lisa Seelye (RETIRED) gentoo-dev

2004-10-27 14:27:17 UTC

re Comment #1, can you post that as a unidiff?

Comment 5 Tom Hosiawa 2004-10-27 16:05:48 UTC

Created attachment 42728 [details, diff]
/FindOpenGL.diff

Comment 6 Lisa Seelye (RETIRED) gentoo-dev

2004-12-14 14:58:17 UTC

Is there some reason to ignore the comment:

  # The first line below is to make sure that the proper headers
  # are used on a Linux machine with the NVidia drivers installed.
  # They replace Mesa with NVidia's own library but normally do not
  # install headers and that causes the linking to
  # fail since the compiler finds the Mesa headers but NVidia's library.
  # Make sure the NVIDIA directory comes BEFORE the others.
  #  - Atanas Georgiev <atanas@cs.columbia.edu>

(from FindOpenGL.cmake)

Comment 7 Tom Hosiawa 2004-12-16 15:48:47 UTC

I'm not sure, maybe it's something to do with gentoo using opengl-update to set the current opengl libraries used. I just know it worked for me.

Comment 8 Lisa Seelye (RETIRED) gentoo-dev

2005-01-11 22:31:19 UTC

I'm going to close this because there's a directive in the program itself not to do what this patch does. Added to that is the fact that you're the only one to report this as an issue.  If more users have this as an issue I'll be more than happy to reopen this bug and commit the patch; but for now I can't justify bloating the portage tree any more than it is already.