/usr/lib/x86_64-linux-gnu/pkgconfig/libzmq.pc is in libzmq3-dev 4.2.5-1.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: libzmq
Description: 0MQ c++ library
Version: 4.2.5
Libs: -L${libdir} -lzmq
Libs.private: -lstdc++ -lsodium -lpgm -lpthread -lm -lnorm
Cflags: -I${includedir}
|