[Bug fortran/40958] module files too large

[jb at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40958

Janne Blomqvist <jb at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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             Status|WAITING                     |REOPENED

--- Comment #13 from Janne Blomqvist <jb at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #12)
> Joost, is it fixed after revision 198023? If yes, could you close the PR as
> FIXED?

With the introduction of the temp buffer for parsing modules the excessive
lseek() calls have been eliminated, and with the introduction of compressed
module files the total size of module files on disk have been reduced by an
order of magnitude for large projects.

However, the fundamental(?) issue of module sizes growing exponentially with
deep module hierarchies still remains. The solution to that is to not include
transitive dependencies, which in turn would require a module cache for good
performance. Whether that is worth doing, and who is willing and able to do it,
is unclear.