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From: "Henrik Bengtsson" <hb AT wehi DOT edu DOT au>
To: <cygwin AT cygwin DOT com>
Subject: RE: gcc and libtiff, maybe a newbie question
Date: Fri, 3 Jan 2003 17:59:38 +1100
Message-ID: <000601c2b2f5$aeb515b0$7341a8c0@alpha.wehi.edu.au>
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Vola, it works for me now. 

Thanks a lot and have really good day!

Henrik

> -----Original Message-----
> From: cygwin-owner AT cygwin DOT com 
> [mailto:cygwin-owner AT cygwin DOT com] On Behalf Of Elfyn McBratney
> Sent: den 3 januari 2003 17:53
> To: Henrik Bengtsson; cygwin AT cygwin DOT com
> Subject: Re: gcc and libtiff, maybe a newbie question
> 
> 
> Hi,
> 
> The problem is partially due to where the -lname bits are. 
> They should be put at the end of the line (after all options 
> and stuff). You also needed to include libz (-lz) and libjpeg 
> (-ljpeg).
> 
> This worked for me:
> 
> $ gcc -static -o tifft tifft.c -lm -ltiff -ljpeg -lz
> 
> P.s. I renamed your file to tifft.c, still using your code.
> 
> Elfyn
> elfyn AT exposure DOT org DOT uk
> 
> 
> --- "Henrik Bengtsson" <hb AT maths DOT lth DOT se> wrote:
> >Hi, first I haven't done C programming in years and am a bit 
> rusty with 
> >gcc and ld. I am having problems with ld reporting 
> "undefined reference 
> >to _TIFFOpen" etc, which should be in libtiff. However, I am 
> not even 
> >sure if the problem is about libtiff or if miss something else.
> >
> >Here is my minimize code I am trying to compile and link (write.c):
> >
> >#include <stdio.h>
> >#include "tiff.h"
> >#include "tiffio.h"
> >
> >int main(int argc, char *argv[]) {
> >  TIFF *image;
> >
> >  if((image = TIFFOpen("output.tif", "w")) == NULL){
> >    printf("Could not open output.tif for writing\n");
> >    exit(42);
> >  }
> >  TIFFClose(image);
> >}
> >
> >I get the following error:
> >% gcc -static -lm -ltiff -o write.o -ltiff write.c
> >/tmp/ccfugoHj.o(.text+0x76):write.c: undefined reference to 
> `_TIFFOpen'
> >/tmp/ccfugoHj.o(.text+0xa2):write.c: undefined reference to 
> >`_TIFFClose'
> >collect2: ld returned 1 exit status
> >
> >According to the following troubleshooting it looks like it finds 
> >libtiff.a (or something): % gcc -static -lm -ltiffX -o 
> write.o -ltiff 
> >write.c
> >/usr/lib/gcc-lib/i686-pc-cygwin/3.2/../../../../i686-pc-cygwi
> n/bin/ld:
> >cannot fi
> >nd -ltiffX
> >collect2: ld returned 1 exit status
> >
> >According to Cygwin Setup the tiff version is 3.5.7-1. gcc is v3.2 
> >(20020927).
> >
> >% ls -l /usr/lib/libtiff.*
> >-rwx------+   1 hb       None       316100 Feb 10  2002
> >/usr/lib/libtiff.a
> >-rwx------+   1 hb       None       152620 Feb 10  2002
> >/usr/lib/libtiff.dll.a
> >
> >% ls -l /usr/include/tiff*
> >-rwx------+   1 hb       None        24302 Feb 10  2002
> >/usr/include/tiff.h
> >-rwx------+   1 hb       None         5254 Feb 10  2002
> >/usr/include/tiffconf.h
> >-rwx------+   1 hb       None        14072 Feb 10  2002
> >/usr/include/tiffio.h
> >-rwx------+   1 hb       None        11554 Feb 10  2002
> >/usr/include/tiffiop.h
> >-rwx------+   1 hb       None          410 Feb 10  2002
> >/usr/include/tiffvers.h
> >
> >I appreciate any help.
> >
> >Cheers
> >
> >Henrik Bengtsson
> >
> >
> >
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