/usr/lib/x86_64-linux-gnu/pkgconfig/libraw1394.pc is in libraw1394-dev 2.1.0-3.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: libraw1394
Description: Interface library for the Linux IEEE1394 drivers.
Version: 2.1.0
Libs: -L${libdir} -lraw1394
Cflags: -I${includedir}
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