On my system libz.dylib is a symlink to libz.1.1.3.dylib

[coltrane:~] 18:31> ll /usr/lib/libz*
-rwxr-xr-x    1 root     wheel       56372 Jan 13 04:40
/usr/lib/libz.1.1.3.dylib
lrwxr-xr-x    1 root     wheel          16 Jan 13 21:56
/usr/lib/libz.1.dylib ->
 libz.1.1.3.dylib
lrwxr-xr-x    1 root     wheel          16 Jan 13 21:56
/usr/lib/libz.dylib ->
libz.1.1.3.dylib

But I have both Gerben Wierda's and fink's versions of ghostscript (both
version 7, the fink ghostscript is the one in stable).
Here is what I get from gs -h in the two cases:

Fink's gs:

[coltrane:~] 18:33> /sw/bin/gs -h
AFPL Ghostscript 7.04 (2002-01-31)
Copyright (C) 2001 artofcode LLC, Benicia, CA.  All rights reserved.
Usage: gs [switches] [file1.ps file2.ps ...]
Most frequently used switches: (you can use # in place of =)
 -dNOPAUSE           no pause after page   | -q       `quiet', fewer
messages
 -g<width>x<height>  page size in pixels   | -r<res>  pixels/inch
resolution
 -sDEVICE=<devname>  select device         | -dBATCH  exit after last file
 -sOutputFile=<file> select output file: - for stdout, |command for pipe,
                                         embed %d or %ld for page #
Input formats: PostScript PostScriptLevel1 PostScriptLevel2 PDF
Available devices:
   x11 bbox x11alpha x11cmyk x11gray2 x11gray4 x11mono bmpmono bmpgray
   bmpsep1 bmpsep8 bmp16 bmp256 bmp16m bmp32b deskjet djet500 laserjet
   ljetplus ljet2p ljet3 ljet3d ljet4 ljet4d lj5mono lj5gray cdeskjet
   cdjcolor cdjmono cdj550 pj pjxl pjxl300 uniprint ijs bj10e bj200 bjc600
   bjc800 faxg3 faxg32d faxg4 pcxmono pcxgray pcx16 pcx256 pcx24b pcxcmyk
   pbm pbmraw pgm pgmraw pgnm pgnmraw pnm pnmraw ppm ppmraw pkm pkmraw
pksm
   pksmraw tiffcrle tiffg3 tiffg32d tiffg4 tifflzw tiffpack tiff12nc
   tiff24nc psmono psgray psrgb bit bitrgb bitcmyk png16m pnggray pngmono
   png256 png16 jpeg jpeggray pdfwrite pswrite epswrite pxlmono pxlcolor
   cljet5 cljet5c nullpage
Search path:
   . : /sw/share/ghostscript/7.04/lib : /sw/share/ghostscript/fonts
For more information, see /sw/share/ghostscript/7.04/doc/Use.htm.
Report bugs to [EMAIL PROTECTED], using the form in Bug-form.htm.

Gerben's gs:

[coltrane:~] 18:33> /usr/local/bin/gs -h
GNU Ghostscript 7.05 (2002-04-22)
Copyright (C) 2002 artofcode LLC, Benicia, CA.  All rights reserved.
Usage: gs [switches] [file1.ps file2.ps ...]
Most frequently used switches: (you can use # in place of =)
 -dNOPAUSE           no pause after page   | -q       `quiet', fewer
messages
 -g<width>x<height>  page size in pixels   | -r<res>  pixels/inch
resolution
 -sDEVICE=<devname>  select device         | -dBATCH  exit after last file
 -sOutputFile=<file> select output file: - for stdout, |command for pipe,
                                         embed %d or %ld for page #
Input formats: PostScript PostScriptLevel1 PostScriptLevel2 PDF
Available devices:
   bmpmono bmpgray bmpsep1 bmpsep8 bmp16 bmp256 bmp16m bmp32b bbox deskjet
   djet500 laserjet ljetplus ljet2p ljet3 ljet3d ljet4 ljet4d lj5mono
   lj5gray cdeskjet cdjcolor cdjmono cdj550 pj pjxl pjxl300 uniprint ijs
   bj10e bj200 bjc600 bjc800 faxg3 faxg32d faxg4 pcxmono pcxgray pcx16
   pcx256 pcx24b pcxcmyk pbm pbmraw pgm pgmraw pgnm pgnmraw pnm pnmraw ppm
   ppmraw pkm pkmraw pksm pksmraw tiffcrle tiffg3 tiffg32d tiffg4 tifflzw
   tiffpack tiff12nc tiff24nc psmono psgray psrgb bit bitrgb bitcmyk
png16m
   pnggray pngmono png256 png16 jpeg jpeggray pdfwrite pswrite epswrite
   pxlmono pxlcolor cljet5 cljet5c nullpage
Search path:
   . : /usr/local/share/ghostscript/7.05/lib :
   /usr/local/share/ghostscript/fonts
For more information, see /usr/local/share/ghostscript/7.05/doc/Use.htm.
Report bugs to [EMAIL PROTECTED], using the form in Bug-form.htm.


Stefano

On Sun, 9 Feb 2003, Martin Costabel wrote:

> Testing a newly built scribus, I found that I could no longer import eps
> graphics. The reason is that ghostscript-8 does not have the png16m
> device that exists in ghostscript6 (nor the other png devices).
>
> In the ghostscript build log I found the following
>
> > checking for deflate in -lz... yes
> > checking for local png library source... no
> > checking for png_check_sig in -lpng... no
> > no
> > configure: disabling png output devices
>
> In config.log I see the following
>
> > configure:5351: checking for png_check_sig in -lpng
> > configure:5384: gcc -o conftest -g -O2 -I/sw/include -L/sw/lib conftest.c -lpng  
>-lm  >&5
> > ld: Undefined symbols:
> > _crc32
> > _inflateReset
>
> Indeed, these symbols are undefined in libpng.dylib (both version 2 and
> 3). They are defined in /usr/lib/libz.dylib, but this library is nowhere
> included.
>
> Something is not right here, but I don't know who to blame, libpng or
> the ghostscript configure script.
>
> Does everyone else have the png devices in ghostscript versions 7 or 8
> ("gs -h") ?
>
> --
> Martin
>
>
>
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