/usr/lib/x86_64-linux-gnu/pkgconfig/libbrotlidec.pc is in libbrotli-dev 1.0.3-1ubuntu1.2.
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=/usr
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: libbrotlidec
URL: https://github.com/google/brotli
Description: Brotli decoder library
Version: 1.0.4
Libs: -L${libdir} -lbrotlidec
Requires.private: libbrotlicommon >= 1.0.2
Cflags: -I${includedir}
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