/usr/lib/pkgconfig/smartcardpp.pc is in libsmartcardpp-dev 0.3.0-0ubuntu8.
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=/usr/include
Name: smartcardpp
Description: smartcardpp smart card library
Version: 0.3.0
Requires.private: libpcsclite
Libs: -L${libdir} -lsmartcardpp
Cflags: -I${includedir}
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