Compile error on gnustep-gui 0.9.2

[Martin Connolly]

I could not get this to configure until I downloaded the latest
versions of libjpeg, libtiff and libpng from gnuwin32.sf.net. However
when I do a make, I get this error:
...snip.....
 Compiling file NSBitmapImageRep+PNG.m ...
In file included from
c:/GNUstep/Development/msys/1.0/mingw/include/png.h:332,
                 from NSBitmapImageRep+PNG.m:34:
c:/GNUstep/Development/msys/1.0/mingw/include/pngconf.h:1099: parse
error before '*' token
c:/GNUstep/Development/msys/1.0/mingw/include/pngconf.h:1100: parse
error before '*' token
c:/GNUstep/Development/msys/1.0/mingw/include/pngconf.h:1101: parse
error before '*' token
In file included from NSBitmapImageRep+PNG.m:34:
c:/GNUstep/Development/msys/1.0/mingw/include/png.h:1045: parse error
before "z_stream"
c:/GNUstep/Development/msys/1.0/mingw/include/png.h:1283: parse error
before '}' token
NSBitmapImageRep+PNG.m: In function `-[NSBitmapImageRep(PNG)
_initBitmapFromPNG:]':
NSBitmapImageRep+PNG.m:116: dereferencing pointer to incomplete type
make[2]: *** [shared_obj/NSBitmapImageRep+PNG.o] Error 1
make[1]: *** [libgnustep-gui.all.library.variables] Error 2
make[1]: Leaving directory `/home/GB009677/gnustep-gui-0.9.2/Source'
make: *** [internal-all] Error 2

Any suggestions? Thanks