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Cygwin cygdrive prefix (was: TONYC TPF Grant - October 2015)

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From:
Achim Gratz
Date:
December 4, 2015 19:48
Subject:
Cygwin cygdrive prefix (was: TONYC TPF Grant - October 2015)
Message ID:
87twny0ze3.fsf@Rainer.invalid
Tony Cook writes:
>   1.15          cygwin build issue, test failure

Sorry to piggy-back on here, but I didn't find where this was discussed
on the list (if it was).

From the date of the commit I assume that 636efde is (at least in part)
what's meant here.  I suggest that the fix should be cherry-picked to
the 5.22.1 branch.

To the fix itself, using df will eventually fail on some systems even
with the "-a" switch since you can't assume that a C: drive exists.  A
more appropriate way to obtain the cygdrive prefix is to use

readlink "/proc/cygdrive"

or `readlink -f /proc/cygdrive` or maybe even `cygpath -u C:` (the
latter works even if the drive in question doesn't exist and presumably
does so even on older versions of Cygwin that didn't have the /proc
pseudo-fs).


Regards,
Achim.
-- 
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