/usr/lib/x86_64-linux-gnu/pkgconfig/menu.pc is in libncurses5-dev 6.1-1ubuntu1.
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 13 14 15 16 17 18 19 | # pkg-config file generated by gen-pkgconfig
# vile:makemode
prefix=/usr
exec_prefix=${prefix}
libdir=/usr/lib/x86_64-linux-gnu
includedir=${prefix}/include
abi_version=5
major_version=6
version=6.1.20180127
Name: menu
Description: ncurses 6.1 add-on library
Version: ${version}
URL: https://invisible-island.net/ncurses
Requires.private: ncurses
Libs: -L${libdir} -lmenu
Libs.private:
Cflags: -D_GNU_SOURCE -D_DEFAULT_SOURCE
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