Re: Problems with libtiff!

["Suhaib M. Siddiqi" <ssiddiqi@ipass.net>]

> Hello,
>
> I browsed through the archives and there should be
> no problems at all, but...
>
> libtiff v3.4beta037 + cygwin B20.1
>
> % sh configure --target=i586
> % make
>
> compiles without any errors on Win95b, AMD-K6-2.

Yes, it compiles without errors.

>
> execution problems:
>
> tools/tiffdump.exe - works ok
> tools/tiff2ps.exe  - does not work, probs with strip-size
> tools/thumbnail.exe - does not work,
>   the thumbnail image is 8 byte in size (just the header)
>   I guess libtiff is unable to read my greyscale image
>   which I created with libtiff on a UNIX-system.
>   (the images is ok, a hex-dump shows this)
> and so on...

that is where the problem is, at least i noticed.
if you unmount the disk then binary mount it

umount /
mount -b c: /

Now your tiff images created on UNIX can be read, also tiff images created
under Cygwin
will not have header problems and can be opened with Photoshop and/or MS
Wang Image Editor.

That's what I meant that someone needs to port Tiff properly the precompiled
binaries available
from Cygwin users have the above mentioned problems.  I have tried almost
all the precompiled
Tiff binaries available on net from different porters and all of them have
this problem.

--Suhaib

>
> If I save images with my own program via libtiff
> (on UNIX everything works well) the TIFF-images
> are corrupt. The hex dump of the image shows:
> - byte ordering and the first 4 bytes (0..3) of the header
>   seem to be ok.
> - the pointer to the first IFD (Byte 4..7) misses the real IFD
>   by one byte. If I fix this manually the image is recognized
>   by other programs (type, size etc. are correct) but the data
>   is still corrupt.
> ???
>
> Does anybody got a _working_ libtiff on Win95?
>
> Bye
> Ulrich Koehler
>
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>


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