/usr/lib/x86_64-linux-gnu/pkgconfig/qtermwidget5.pc is in libqtermwidget5-0-dev 0.7.1-2.
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 | prefix=/usr
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: qtermwidget5
Description: QTermWidget library for Qt 0.x
Version: 0.7.1
Requires: Qt5Core, Qt5Xml, Qt5Widgets
Libs: -L${libdir} -lqtermwidget5
Cflags: -I${includedir} -I${includedir}/qtermwidget5
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