nanogui: Thread: compiling flnx-0.16 for viewml on microwindow

Hi, 
I am trying to compile flnx-0.16 which is to make the Viewml work on
microwindows, 
However I got this error I just couldn't resolve:
fl_draw_pixmap.cxx:233:parse error before ';'
fl_draw_pixmap.cxx:234:implicit declaration of function 'int
XParseColor(...)'
fl_draw_pixmap.cxx:235:request for member 'red' in 'x', which is of
non-aggregate type 'int'

I think they are trying to access the X server functions. However, I am
using framebuffer selection instead of Xserver selection when config. Do
you know how can I solve this problem??

thanks