Compile error with gcc-4.1 on OS X

Hi,

the first occurence of the problem appears as follows.

CU Lars.

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/usr/local/bin/g++ -Wno-deprecated -O2 -mcpu=7450 -I./ -I ../../base -I ../../geo -I ../../img -I ../../io -I ../../lite -I ../../modmat -I ../../modmod -I ../../pm -I ../../ray\
  -I./ -I../../base -I../radlib1 -I../radlib2 -I/usr/include/X11 -I/usr/X11R6/include -DRADLIB -c -o rview.o rview.c
../../base/scenebase.h:101: error: ISO C++ forbids declaration of 'SCENEIO_OC' with no type
../../base/scenebase.h:101: error: expected ';' before '*' token
../../base/scenebase.h:102: error: ISO C++ forbids declaration of 'SCENEIO_MI' with no type
../../base/scenebase.h:102: error: expected ';' before '*' token
make[1]: *** [rview.o] Error 1
make[1]: Leaving directory `/Users/lars/Desktop/radzilla1.0/zlibs/radlibX11'
make: *** [libX11] Error 2
make: *** No rule to make target `install'. Stop.
~/Desktop/radzilla1.0