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@@ -1,4 +1,12 @@
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if(HAVE_GL)
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if(HAVE_GL)
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+ # Check that we actually have a display subsystem.
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+ if(NOT HAVE_WGL AND NOT HAVE_COCOA AND NOT HAVE_CARBON AND NOT HAVE_GLX)
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+ message("") # Add extra line before error
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+ message(SEND_ERROR
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+ "When compiling with OpenGL (HAVE_GL), at least one of:
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+ HAVE_WGL, HAVE_COCOA, HAVE_CARBON, or HAVE_GLX must be defined.")
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+ endif()
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+
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add_definitions(-DBUILDING_PANDAGL)
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add_definitions(-DBUILDING_PANDAGL)
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set(PANDAGL_LINK_TARGETS p3glgsg)
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set(PANDAGL_LINK_TARGETS p3glgsg)
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kestred