/usr/lib/x86_64-linux-gnu/pkgconfig/gnuradio-iqbalance.pc is in libgnuradio-iqbalance0 0.37.1.5.d4fd4d-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=${prefix}
libdir=${exec_prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: gnuradio-iqbalance
Description: gnuradio I/Q balancing
URL: http://git.osmocom.org/gr-iqbal/
Version: 0
Requires: gnuradio-runtime
Libs: -L${libdir} -lgnuradio-iqbalance
Cflags: -I${includedir}
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