https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108464
--- Comment #5 from Richard Purdie <richard.purdie at linuxfoundation dot org> --- (In reply to Jakub Jelinek from comment #4) > Though, even for the other options the change doesn't seem to be a good idea > as is. > I think instead the syntax of those remapping options should be extended, so > that for each of the pair one can choose the behavior which is wanted. > Using the OLD=NEW syntax > with the previous behavior, and some other to mark pairs where you want new > behavior > (dunno whether to mark those using say extra = at the end after NEW or > whatever else). > Then when populating file_prefix_map entries, one would record this > non-canonicalizing vs. canonicalizing flag and in the latter case > canonicalize the old_prefix path in the structure. > remap_filename then would ideally lazily lrealpath when seeing first map > entry with the bool flag indicating canonicalization. Having some way to enable the behaviour would be very valuable to the places we use prefix mapping so we could make that work FWIW.
