Re: [PATCH, take 3][cygwin|mingw] Control where win32 DLLs get installed.

[Ralf Wildenhues]

in addition to what Eric already documented:

* Dave Korn wrote on Fri, Aug 14, 2009 at 01:34:18PM CEST:
> 
>   Still finishing it off and getting it tested, but while that's going, here's
> a preview of the path canonicalisation function as I've got it so far; let me
> know if I've done any major no-nos please!

Do you cope with paths starting with // (these can be special on Cygwin,
you may not remove the second / in that case)?  (If anything, this is
only a rather minor no-no however, and I have no idea whether we treat
it consistently elsewhere in libtool.)

> pathcar="s,^/\([^/]*\).*$,\1,"
> pathcdr="s,^/[^/]*,,"
> removedotparts="s,/\(\.\(/\|$\)\)\+,/,g"
> collapseslashes="s,/\+,/,g"
> 
> # func_normal_abspath path

Capitalize PATH here, please.  Maybe also s/PATH/FILE/ throughout the
comment, to avoid mistaking it with the $PATH environment variable?

> # Remove doubled-up and trailing slashes, "." path components,
> # and cancel out any ".." path components in PATH.
> #             value returned in "$func_normal_abspath_result"

Missing a statement that an absolute path is returned, that would be
nice.

One would hope for a followup patch that factorizes all the forks
in this function for SUSv3 shells that provide ${var##...} etc.
Otherwise, if this function is used more than once per libtool
invocation, it will be a major speed bump in a typical build.
(IOW, you don't need to address this, but it ought to be looked at;
I might do it sometime.)

Cheers,
Ralf