/usr/lib/x86_64-linux-gnu/pkgconfig/glesv2.pc is in libgles2-mesa-dev 8.0.2-0ubuntu3.
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 12 | prefix=/usr
exec_prefix=${prefix}
libdir=/usr/lib/x86_64-linux-gnu
includedir=/usr/include
Name: glesv2
Description: Mesa OpenGL ES 2.0 library
Requires.private:
Version: 8.0.0
Libs: -L${libdir} -lGLESv2
Libs.private: -lm -lpthread -ldl
Cflags: -I${includedir}
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