Some sim ports use these to provide networking functionality via the dv-sockser module or via direct emulation for a few ports. Gdb seems to build just fine still too.
This is an import of gnulib that is used by gdb and gdbserver. To send patches, follow the gdb patch submission instructions in ../gdb/CONTRIBUTE. For maintainers, see ../gdb/MAINTAINERS. See update-gnulib.sh for instructions on updating gnulib.