/usr/lib/x86_64-linux-gnu/pkgconfig/sane-backends.pc is in libsane-dev 1.0.23-3ubuntu3.
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 13 14 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
ldflags=-Wl,-Bsymbolic-functions
libs=
Name: SANE Backends
Description: Backends for SANE, the universal scanner interface
Version: 1.0.23
Requires:
Libs: -L${libdir} -lsane
Libs.private: ${ldflags} ${libs}
Cflags: -I${includedir}
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