/usr/lib/pkgconfig/qimageblitz.pc is in libqimageblitz-dev 1:0.0.6-5.
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=/usr
libdir=/usr/lib
includedir=
Name: Blitz
Description: Blitz image effect and filter library
Version: 4.0.0
Requires: QtGui
Libs: -L${libdir} -lqimageblitz
Cflags: -I${includedir}
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