error while doing make on MAC OS

[ari]

system/core/libacc/acc.cpp:441: note: virtual int
acc::Compiler::CodeGenerator::leaForward(intptr_t,
acc::Compiler::Type*)
system/core/libacc/acc.cpp:5875: error: cannot allocate an object of
abstract type 'acc::Compiler::X86CodeGenerator'
system/core/libacc/acc.cpp:2445: note: since type
'acc::Compiler::X86CodeGenerator' has pure virtual functions
make: *** [out/host/darwin-x86/obj/SHARED_LIBRARIES/
libacc_intermediates/acc.o] Error 1

i am facing this issue while compiling the source code on mac osx
10.5.7 xcode version3.0 gcc -4.0

Does anybody has any idea how to remove this error

Thanks in advance