This is a bit of an abbreviated form of what's in the Newlib subdir,
but with emphasis on Libgloss-specific parts, and anything unique to
it. I haven't put too much effort in.
HTML build fails with makeinfo 5.2 with the following error:
libgloss/doc/porting.texi:73: @menu seen before first @node
libgloss/doc/porting.texi:73: perhaps your @top node should be wrapped in
@ifnottex rather than @ifinfo?
Following the advice indeed solve the issue while still allowing pdf, dvi and
info builds to work.