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-cygwin/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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