[MacPorts] #66439: irrlichtmt fails to install on Mac OS 10.6

[MacPorts]

#66439: irrlichtmt fails to install on Mac OS 10.6
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 Reporter:  programmingkidx  |      Owner:  (none)
     Type:  defect           |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:
 Keywords:                   |       Port:  irrlichtmt
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 While trying to install irrlichtmt on Mac OS 10.6 I saw this error:

 Irrlicht/COpenGLDriver.cpp:2012:13: error: use of undeclared identifier
 'GL_TEXTURE_CUBE_MAP_SEAMLESS'; did you mean
 'OpenGLProcedures::TEXTURE_CUBE_MAP_SEAMLESS'?

 I was not able to determine when GL_TEXTURE_CUBE_MAP_SEAMLESS was added to
 Mac OS X. I think this symbol was added in OpenGL 3.2. According to this
 page "https://www.geeks3d.com/20121109/overview-of-opengl-support-on-
 os-x/" OpenGL 3.2 was not available on Mac OS 10.6.

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Ticket URL: <https://trac.macports.org/ticket/66439>
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