[Omake] Case-insensitive filesystems

[Jason Hickey]

On Dec 12, 2006, at 1:01 PM, Aleksey Nogin wrote
>
> Jason, any ideas how we might fix the find-target-* functions to do  
> the right thing on case-insensitive filesystems? Should we just add  
> global variable that defaults to true on OS X and Windows, but can  
> be overwritten by the user? Or is there some hope of being able to  
> detect this?

Actually, I'm not sure why it is happening.  The result of "ocamldep - 
modules" should be uncapitalized, so if we see a dependency on Foo,  
we would check if foo.cmi is buildable.  Granted, without knowing  
case-insensitivity, this would fail if the file were really fOo.ml.

For case-sensitivity detection, we could
    - use statfs(2) to check for HFS, but this is unreliable, since  
HFS can be forced case-sensitive (I believe)
    - test whether, for example, .omakedb and .OMAKEDB are the same file

Project-wide detection will break if the project contains a mount  
point where the case-sensitivity changes...  Unfortunately stat(2) is  
missing this info on a file basis.  Perhaps a call to statfs(2) for  
each directory in a project...

Jason

--
Jason Hickey                  http://www.cs.caltech.edu/~jyh
Caltech Computer Science      Tel: 626-395-6568 FAX: 626-792-4257