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2016.05.30 09:03 "[Tiff] BigTiff Development Version generating blank tiff files from mulitipage tiff file using tiffsplit utility", by Amit Gupta
2016.05.30 20:06 "Re: [Tiff] BigTiff Development Version generating blank tiff files from mulitipage tiff file using tiffsplit utility", by Bob Friesenhahn

2016.05.30 09:03 "[Tiff] BigTiff Development Version generating blank tiff files from mulitipage tiff file using tiffsplit utility", by Amit Gupta

Hi Team,

We downloaded BigTiff Development Kit:

http://bigtiff.org/ (http://bigtiff.org/libtiff-4.1.zip)

Please find our observations while compiling Libtiff-4.1 as below:

Problem faced during compiling of BigTiff-4.1

  1. Copy the Folder libtiff-4.1 to Ubuntu 14.04 Machine , gcc version : gcc = 4.8.4, make version : GNU Make 3.81
  2. Go to the libtiff-4.1 directory
  3. run command make

 result is: libjpeg.a and libz.a built and facing error in making libtiff.=
a
  Modification: modify the tiff-4.1 path in make file: TIFFDIR=tiff-4.=
0/libtiff ---> TIFFDIR=tiff-4.1/libtiff

  Then same Error in make file of tiff-4.1 directory
  Modification: modify the tiff-4.1 path in make file: TIFFDIR=tiff-3.=
8.2B/libtiff ---> TIFFDIR=tiff-4.1/libtiff

  Then error in make file of libtiff folder:
  1. INCLDIR = ../../includes
   Modified as:
      INCLDIR_DIR_JPEG = ../../libjpeg/jpeg-6b
      INCLDIR_DIR_LIBGZ = ../../libz/zlib123

      Then IPATH is modified as:
       IPATH = -I. -I${SRCDIR} -I$(INCLDIR) --->IPATH = -I. -I${SRCDIR=
} -I$(INCLDIR_DIR_JPEG) -I$(INCLDIR_DIR_LIBGZ)

      Rule for object file tif_jpeg.o modified as:
       tif_jpeg.o: ${SRCDIR}/tif_jpeg.c $(INCLDIR)/jpeglib.h $(INCLDIR)/jer=
ror.h ---> tif_jpeg.o: ${SRCDIR}/tif_jpeg.c $(INCLDIR_DIR_JPEG)/jpeglib.h $=
(INCLDIR_DIR_JPEG)/jerror.h

      Rule for object file tif_zip.o modified as:
       tif_zip.o: ${SRCDIR}/tif_zip.c ${SRCDIR}/tif_predict.h $(INCLDIR)/zl=
ib.h ----> tif_zip.o: ${SRCDIR}/tif_zip.c ${SRCDIR}/tif_predict.h $(INCLDIR=
_DIR_LIBGZ)/zlib.h

 After Above Modification, libtiff.a built;

 Now when we try to build TiffSplite tool with File: tiffsplit.c with comm=
and

      gcc -o tiffsplit_Utility tiffsplit.c libtiff.a libjpeg.a libz.a

then we faced some linking errors of math API;

Now we compiled with math lib: lm

gcc -o tiffsplit_Utility tiffsplit.c libtiff.a libjpeg.a libz.a -lm

Now tiffsplit_Utility is successfully built.

Then we run the tiffsplit_Utility like:

./tiffsplit_Utility filename.tif filename

Now tiffsplit_Utility successfully splited the tiff file but splited fil= es are blank.

Please help us, why the splitted files were blank. Is there anything we mis=
sed in the above process?

Thanks and Regards,
Amit Gupta