/usr/lib/x86_64-linux-gnu/pkgconfig/lvm2app.pc is in liblvm2-dev 2.02.133-1ubuntu10.
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=
libdir=/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: lvm2app
Description: lvm2 application library
Version: 2.2
Cflags: -I${includedir}
Libs: -L${libdir} -llvm2app
Requires.private: devmapper blkid
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