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August 2008
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2008.08.11 20:03 "Re: windows 64 bit build", by Edward Lam
No, I think the real bug is that TIFFFdOpen() should take a thandle_t as its first parameter instead of int. Given the File I/O agnostic interface of libtiff, there's no point in have a function that specifically only opens a tiff file from specifically an fd anyhow. This does raise interface compatibility issues but I assume bigtiff breaks ABI compability anyhow? -Edward Mikhail Kruk wrote: > OK... what would be a good way of fixing it? Doesn't look like > TIFFFdOpen interface should be changed; I'm not sure why is it used to > pass Windows HANDLEs, sounds confusing (as Windows has normal int file > descriptors as well). Should we add new functions TIFFHndlOpen or > something like that? Win32 only? > > On Mon, Aug 11, 2008 at 3:29 PM, Bob Friesenhahn > <bfriesen@simple.dallas.tx.us> wrote: >> On Mon, 11 Aug 2008, Mikhail Kruk wrote: >> >>> I'm trying to build LibTiff for 64 bit Windows. >>> I'm not sure what's the best way to handle this problem in tif_win32.c >>> (in TIFFOpen()): >>> >>> tif = TIFFFdOpen((int)fd, name, mode); >>> >>> fd is a void * which is 64 bit on Windows, int is 32 bit. >> This does seem like a problem, particularly if the extra bits are actually >> used. I don't believe that libtiff has been ported to 64-bit Windows even >> though it mostly works ok for 64-bit Unix systems. 64-bit Windows is strange >> since 'long' is still 32-bits. >> >> Since this seems like a new area for libtiff, I recommend using the >> 4.0.0beta2 preliminary release, or libtiff CVS, so that it is easier to >> formulate and test fixes. Old releases are never fixed. >> >> Bob >> ====================================== >> Bob Friesenhahn >> bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ >> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ >> >> > _______________________________________________ > Tiff mailing list: Tiff@lists.maptools.org > http://lists.maptools.org/mailman/listinfo/tiff > http://www.remotesensing.org/libtiff/