[Bug modula2/108142] Many empty directories created in the build directory

[gaius at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108142

--- Comment #6 from Gaius Mulley <gaius at gcc dot gnu.org> ---
Created attachment 54149
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54149&action=edit
m2 remove empty directories from top build (using mkinstalldirs)

The same patch as before but now using mkinstalldirs instead of mkdir -p.