/usr/lib/x86_64-linux-gnu/pkgconfig/lcms2.pc is in liblcms2-dev 2.2+git20110628-2ubuntu3.1.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=/usr/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: lcms2
Description: LCMS Color Management Library
Version: 2.2
Libs: -L${libdir} -llcms2
Libs.private: -lm
Cflags: -I${includedir}
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