mupdf.c will not build as written.  It contains two function calls with the wrong number of variables: fz_new_pixmap_with_data has six but expects four, and fz_execute_display_list has three but expects four.

SPECULATIVE CAUSES

fz_new_pixmap_with_data's third and fourth parameters seem to be a width and a height, and the bad call seems to be passing x and y position and then width and height.

fz_execute_display_list expects a bounding box as its fourth parameter, and an object called bbox is present by the bad call.  It may be enough to insert this as the fourth parameter.