Building With the UDK

Learn various -K switches
-Kuchar
-Kthreads
-Kalloca
No support for variable-sized arrays
          int length(void);
          int foo(void) {
              int x=length();
              char f[x];
              ...
          }
Use gcc for GNU C compiler extensions
Invalidated old C++ code
Can use "CC -Xo" for cfront compatibility
"CC -Xo" is transitional only