/usr/lib/pkgconfig/silgraphite.pc is in libgraphite-dev 1:2.3.1-0.2.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
version=2.3.1
Name: SILGraphite
Description: Script rendering engine
Version: ${version}
Libs: -L${libdir} -lgraphite
Cflags: -I${includedir}
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