Binary package “libc6-dev-x32-amd64-cross” in ubuntu lunar

GNU C Library: X32 ABI Development Libraries for AMD64 (for cross-compiling)

 This package was generated by dpkg-cross for cross compiling.
 .
 Contains the symlinks and object files needed to compile and link programs
 which use the standard C library. This is the X32 ABI version of the
 library, meant for amd64 systems.