This change adjusts the Makefile for the fbpdf target to link MuPDF's transitive libraries directly, including zlib, FreeType, HarfBuzz, jbig2dec, OpenJPEG, and JPEG. That usually matters on systems or toolchains that don't automatically pull in dependent libraries, where linking can fail even though MuPDF itself is installed. In practice, this should make PDF support compile more consistently and reduce environment-specific build breakage.