anchor.diff:         Freetype `-I' cflags from being propagated. */ ''
         sed -i src/cairo.pc.in \
           -e 's|^Cflags:\(.*\)$|Cflags: \1 -I${freetype}/include/freetype2 -I${freetype}/include|g'
  -    '' + optionalString (xorg == null)
  +    '' + optionalString (!opengl-dummy.glx)
       /* tests and perf tools require Xorg */ ''
         sed -i Makefile.am \
           -e '/^SUBDIRS/ s#boilerplate test perf# #'
  
positive.code:     "--enable-interpreter"
      "--disable-symbol-lookup"
      #"--enable-some-floating-point"
      "--${boolwt opengl-dummy.glx}-x"
      #(wtFlag "skia" true "yes")
      #(wtFlag "skia-build-type" true "Release")
      "--without-gallium"
  
negative.code:     "--disable-gallium"
      # Only one OpenGL backend may be selected at compile time
      # OpenGL X (gl), or OpenGL ES 2.0 (glesv2)
      "--${boolEn (!opengl-dummy.glesv2 && opengl-dummy.glx)}-gl"
      "--${boolEn opengl-dummy.glesv2}-glesv2"
      "--disable-cogl"  # recursive dependency
      # FIXME: fix directfb mirroring
  