Qt does not build without openGL

I get a lot of output like this:

../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:146: error: 'GLenum' is not a type
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:146: error: 'GLvoid' has not been declared
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:149: error: expected initializer before '*' token
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:158: error: 'GLboolean' does not name a type
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: variable or field 'glBlitFramebuffer' declared void
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: 'QOpenGLExtensions::glBlitFramebuffer' declared as an 'inline' variable
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: 'int QOpenGLExtensions::glBlitFramebuffer' is not a static member of 'class QOpenGLExtensions'
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:167: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:168: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:168: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:168: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:168: error: 'GLint' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:169: error: 'GLbitfield' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:169: error: 'GLenum' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:169: error: initializer expression list treated as compound expression
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:170: error: expected ',' or ';' before '{' token
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:177: error: variable or field 'glRenderbufferStorageMultisample' declared void
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:177: error: 'QOpenGLExtensions::glRenderbufferStorageMultisample' declared as an 'inline' variable
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:177: error: 'int QOpenGLExtensions::glRenderbufferStorageMultisample' is not a static member of 'class QOpenGLExtensions'
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:177: error: 'GLenum' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:177: error: 'GLsizei' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:178: error: 'GLenum' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:179: error: 'GLsizei' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:179: error: 'GLsizei' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:179: error: initializer expression list treated as compound expression
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:180: error: expected ',' or ';' before '{' token
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: variable or field 'glGetBufferSubData' declared void
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: 'QOpenGLExtensions::glGetBufferSubData' declared as an 'inline' variable
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: 'int QOpenGLExtensions::glGetBufferSubData' is not a static member of 'class QOpenGLExtensions'
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: 'GLenum' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: expected primary-expression before 'offset'
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: expected primary-expression before 'size'
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: 'GLvoid' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: 'data' was not declared in this scope
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:187: error: initializer expression list treated as compound expression
../../include/QtGui/5.0.0/QtGui/private/../../../../../src/gui/opengl/qopenglextensions_p.h:188: error: expected ',' or ';' before '{' token
kernel/qopenglcontext.cpp: In member function 'virtual void QOpenGLSharedResourceGuard::freeResource(QOpenGLContext*)':
kernel/qopenglcontext.cpp:512: error: 'm_id' was not declared in this scope