Before compile it, see this:
good, take to look to the configs, becouse when i compile the nsfb (framebuffer) it does not view letters (only english view), and i have install the dejavu ... .tcz,
so the gtk view all local letters, but the framebuffer does not, i dont know if this is a bug, or have to do with netsurf configs, or tinycore.
so take a look at this if you can, nsfb is lighter that the nsgtk i think.
check this in Makefile.defaults
# freetype compiled in font locations
NETSURF_FB_FONTPATH := /usr/share/fonts/truetype/ttf-dejavu:/usr/share/fonts/truetype/msttcorefonts
meaby you have to change this, becouse tinycore have not the same path see the dejavu ....tcz file to see the correct path, meaby not, i dont really know.