23 March 2010


Today, on the recommendation of one of the readers of this blog, I decided to install jbig2enc to see how it might be useful for my digitization project. Unfortunately, it didn't seem to compile out of the box:

[psy@sable:~/src/agl-jbig2enc-edebc5a]$ make
g++ -c jbig2enc.cc -I../leptonlib-1.64/src -Wall -I/usr/include -L/usr/lib -O3 
g++ -c jbig2arith.cc -I../leptonlib-1.64/src -Wall -I/usr/include -L/usr/lib -O3 
g++ -c jbig2sym.cc -DUSE_EXT -I../leptonlib-1.64/src -Wall -I/usr/include -L/usr/lib -O3 
ar -rcv libjbig2enc.a jbig2enc.o jbig2arith.o jbig2sym.o
a - jbig2enc.o
a - jbig2arith.o
a - jbig2sym.o
g++ -o jbig2 jbig2.cc -L. -ljbig2enc ../leptonlib-1.64/src/liblept.a -I../leptonlib-1.64/src -Wall -I/usr/include -L/usr/lib -O3  -lpng -ljpeg -ltiff -lm
../leptonlib-1.64/src/liblept.a(gifio.o): In function `pixWriteStreamGif':
gifio.c:(.text+0x15c): undefined reference to `MakeMapObject'
gifio.c:(.text+0x21d): undefined reference to `EGifOpenFileHandle'
gifio.c:(.text+0x258): undefined reference to `EGifPutScreenDesc'
gifio.c:(.text+0x26f): undefined reference to `FreeMapObject'
gifio.c:(.text+0x277): undefined reference to `EGifCloseFile'
gifio.c:(.text+0x2b0): undefined reference to `FreeMapObject'
gifio.c:(.text+0x2df): undefined reference to `FreeMapObject'
gifio.c:(.text+0x2ff): undefined reference to `EGifPutImageDesc'
gifio.c:(.text+0x31a): undefined reference to `EGifCloseFile'
gifio.c:(.text+0x502): undefined reference to `EGifPutLine'
gifio.c:(.text+0x537): undefined reference to `EGifPutComment'
gifio.c:(.text+0x569): undefined reference to `EGifCloseFile'
gifio.c:(.text+0x582): undefined reference to `FreeMapObject'
gifio.c:(.text+0x5e0): undefined reference to `EGifCloseFile'
gifio.c:(.text+0x653): undefined reference to `EGifCloseFile'
gifio.c:(.text+0x682): undefined reference to `EGifCloseFile'
../leptonlib-1.64/src/liblept.a(gifio.o): In function `pixReadStreamGif':
gifio.c:(.text+0x6ce): undefined reference to `DGifOpenFileHandle'
gifio.c:(.text+0x6e6): undefined reference to `DGifSlurp'
gifio.c:(.text+0x878): undefined reference to `DGifCloseFile'
gifio.c:(.text+0x884): undefined reference to `DGifCloseFile'
gifio.c:(.text+0x9bc): undefined reference to `DGifCloseFile'
gifio.c:(.text+0xa2c): undefined reference to `DGifCloseFile'
gifio.c:(.text+0xa55): undefined reference to `DGifCloseFile'
../leptonlib-1.64/src/liblept.a(gifio.o):gifio.c:(.text+0xa86): more undefined references to `DGifCloseFile' follow
collect2: ld returned 1 exit status
make: *** [jbig2] Error 1

It seems there were a few things wrong with the Makefile. The showstopper was that Leptonica, the library upon which jbig2enc depends, is expecting to link to giflib, but the Makefile doesn't specify this library. This was solved by adding -lgif to the command which compiles jbig2. The other problems were not fatal but somewhat irritating:

  • it is assumed that Leptonica isn't installed in a standard location;
  • there are no install and uninstall targets for (un)installing the package;
  • the program is written in C++, but the compiler is invoked with a redefined $(CC) rather than the standard $(CXX);
  • ar is invoked directly rather than through the standard $(AR); and
  • the clean target uses wildcards somewhat dangerously.

So here's an updated Makefile for jbig2enc 0.27. It should work with little or no modification on most *nix systems. On 64-bit systems which use lib64 directories, the libdir variable should be changed appropriately, or else it should be overriden on the command line.

# Improved Makefile for jbig2enc by Tristan Miller, 2010-03-22

CFLAGS=-I/usr/local/include/liblept -I/usr/include/liblept -Wall -O3 ${EXTRA}

jbig2: libjbig2enc.a jbig2.cc
 $(CXX) -o jbig2 jbig2.cc -L. -ljbig2enc $(CFLAGS) -lpng -ljpeg -ltiff -lm -llept -lgif

libjbig2enc.a: jbig2enc.o jbig2arith.o jbig2sym.o
 $(AR) -rcv libjbig2enc.a jbig2enc.o jbig2arith.o jbig2sym.o

jbig2enc.o: jbig2enc.cc jbig2arith.h jbig2sym.h jbig2structs.h jbig2segments.h
 $(CXX) -c jbig2enc.cc $(CFLAGS)

jbig2arith.o: jbig2arith.cc jbig2arith.h
 $(CXX) -c jbig2arith.cc $(CFLAGS)

jbig2sym.o: jbig2sym.cc jbig2arith.h
 $(CXX) -c jbig2sym.cc -DUSE_EXT $(CFLAGS)

 rm -f jbig2enc.o jbig2arith.o jbig2sym.o jbig2 libjbig2enc.a

 install -s jbig2 $(bindir)
 install pdf.py $(bindir)
 install -s libjbig2enc.a $(libdir)

 rm $(bindir)/jbig2
 rm $(bindir)/pdf.py
 rm $(libdir)/libjbig2enc.a


  1. Glad to ear you are experimenting with jbig2enc

    even I have compiled without problems upon leptonica 1.63 on my Puppy Linux, I'll try your improved makefile) in fact trying to compile with leptonica 1.64 I had some errors

    we are waiting for first releases of your hare (and worthy) work

  2. I compiled jbig2 with your Makefile and when I run './jbig2 test-0001.jpg' I got this error:

    Wrong JPEG library version: library is 80, caller expects 62
    Error in pixReadStreamJpeg: internal jpeg error
    Error in pixReadStream: jpeg: no pix returned
    Error in pixRead: image not returned

    Can you please suggest what is wrong? As far as I understood it "something" expect jpeg version 6.2, but my system has 8.0 and because of dependencies I can not downgrade to 6.2...

  3. I don't think there's any reason why you can't install both versions of libjpeg concurrently. libjpeg-6.2 is simply a library file named libjpeg.so.62.00; there's no way that's going to conflict with anything installed by the libjpeg-8.0 package. Consult your package manager documentation for how to install two versions of a package concurrently, or else manually compile and install libjpeg-6.2.

  4. There is no problem to have more libjpeg version installed. But I think it could cause problems if there are more jpeglib.h in system...

    Problem was (is?) in leptonlib, because it has local copy of jpeglib.h (version 6.2), but it links liblept against /usr/lib64/libjpeg.so (version 8.0) on my system...

    I replaced jpeglib.h from leptonlib source with link to system jpeglib.h (/usr/include/jpeglib.h) recompiled leptonlib and than jbig2 works...