[plt-scheme] compiling error on for 3m

I tried compiling plt with 3m from exp tagged cvs. It fails:

make ../mred3m
make[3]: Entering directory `/usr/local/plt/src/mred/gc2'
../../mzscheme/mzscheme3m -rq ./../../mzscheme/gc2/xform.ss ./../../mzscheme/gc2/ctok.ss "gcc -E -I./../../mzscheme/gc2 -I/usr/X11R6/include -I./../../wxxt/src/AIAI-include -I./../../wxxt/src -I./../../mred/wxme/ -I./../../mzscheme/include/ -DOPERATOR_NEW_ARRAY -DUSE_GL -Dwx_xt -I./../../wxxt/src/XWidgets -I./../../wxxt/src -I./../../wxcommon/jpeg -I../../wxcommon/jpeg" ./../../wxxt/src/Windows/Window.cc xsrc/Window.cc
xform: unknown form: (#4(struct:tok __extension__ 112 "/usr/include/stdlib.h") #4(struct:tok typedef 112 "/usr/include/stdlib.h") #4(struct:tok struct 112 "/usr/include/stdlib.h") #5(struct:braces "{" 113 "/usr/include/stdlib.h" ...))
make[3]: *** [xsrc/Window.cc] Error 1

My machine is running Linux. I can compile mz3m with no errors. Could somebody help?

Thanks,
Dima