/usr/lib/pkgconfig/mupdf.pc is in libmupdf-dev 0.9-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: mupdf
Description: Library for rendering PDF documents
Requires.private: freetype2
Version: 0.5.0
Libs: -L${libdir} -lmupdf
Libs.private: -lopenjpeg -ljbig2dec -ljpeg -lz -lm
Cflags: -I${includedir}
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