https://sourceware.org/pipermail/gdb-announce/2024/000140.html
The release notes state that "Building GDB and GDBserver now requires a
C++17 compiler (for instance, GCC 9 or later)". Looks like we already
satisfy this requirement with GDB_DEP_NO_STD_FUTURE.
gdbserver now has a dependency on iconv.h, for uclibc configurations we
need to make sure this is satisfied.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
