/usr/lib/x86_64-linux-gnu/pkgconfig/pangocairo.pc is in libpango1.0-dev 1.40.14-1.
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=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: Pango Cairo
Description: Cairo rendering support for Pango
Version: 1.40.14
Requires: pango cairo
Requires.private: pangoft2
Libs: -L${libdir} -lpangocairo-1.0
Cflags: -I${includedir}/pango-1.0
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