[Bug modula2/121709] [16 regression] Failed bootstrap in m2 (m2/gm2-lang.cc:547:39: error: ‘PREFIX_INCLUDE_DIR’ was not declared in this scope)

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121709

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2025-08-28
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
cppdefault does:
#ifdef PREFIX_INCLUDE_DIR
    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
#endif

There is also LOCAL_INCLUDE_DIR .

Plus there is also needing to handle --sysroot= option too.