Error from tcc

(VecTcl) 61 % set h [tcc4tcl::new]; $h ccode {#include <stdlib.h>}; $h go
In file included from <string>:1:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/tcl.h:141:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/stdio.h:64:
~/Library/Tcl/tcc4tcl-0.23/include/sys/cdefs.h:81: warning: #warning "Unsupported compiler detected"
In file included from <string>:3:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/stdlib.h:65:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/sys/wait.h:193:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/machine/endian.h:35:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/i386/endian.h:99:
In file included from ~/Library/Tcl/tcc4tcl-0.23/include/sys/_endian.h:124:
~/Library/Tcl/tcc4tcl-0.23/include/libkern/_OSByteOrder.h:99: error: ';' expected (got "_OSSwapInt16")
compilation failed
(VecTcl) 62 %