/usr/lib/x86_64-linux-gnu/pkgconfig/gthread-2.0.pc is in libglib2.0-dev 2.50.3-2.
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=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: GThread
Description: Thread support for GLib
Requires: glib-2.0
Version: 2.50.3
Libs: -L${libdir} -lgthread-2.0 -pthread
Cflags: -pthread
|