Anyone know what could cause this?

Umm first what the heck is an anachronism?
any idea why i'm getting, it?
seems like everything else is depending on this to compile. once this is done. the engine gets compiled
this is for opengl2d3d lib

--------------------Configuration: opengl2d3d - Win32 Release--------------------
Compiling...
OpenGL2D3D.cc
.\opengl2d3d/opengl2d3d.h(1165) : warning C4518: 'void ' : storage-class or type specifier(s) unexpected here; ignored
.\opengl2d3d/opengl2d3d.h(1165) : warning C4230: anachronism used : modifiers/qualifiers interspersed, qualifier ignored
.\opengl2d3d/opengl2d3d.h(1166) : warning C4518: 'void ' : storage-class or type specifier(s) unexpected here; ignored
.\opengl2d3d/opengl2d3d.h(1166) : warning C4230: anachronism used : modifiers/qualifiers interspersed, qualifier ignored
.\opengl2d3d/opengl2d3d.h(1167) : error C2146: syntax error : missing ';' before identifier 'glAreTexturesResident'
.\opengl2d3d/opengl2d3d.h(1167) : warning C4229: anachronism used : modifiers on data are ignored
.\opengl2d3d/opengl2d3d.h(1167) : error C2501: 'GLboolean' : missing storage-class or type specifiers
.\opengl2d3d/opengl2d3d.h(1167) : error C2377: 'GLboolean' : redefinition; typedef cannot be overloaded with any other symbol
.\opengl2d3d/opengl2d3d.h(25) : see declaration of 'GLboolean'
.\opengl2d3d/opengl2d3d.h(1167) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

opengl2d3d.dll - 4 error(s), 5 warning(s)