Building gcc for x86_64: error

I am trying to build gcc 4.3.2 from sources in my x86_64 system which has a 32 bit gcc installed ( older version) which don't support -m64 switch. When I try to configure, it succeeds without any error but 'make' is failing with following error.

checking for suffix of object files... configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details.

I tried setting LD_LIBRARY_PATH and LD_OPTIONS b开发者_如何转开发ut couldn't make any headway. I'm not sure I am going in right direction. Any idea what could be the problem? If anyone of you have come across such problem earlier, please respond if you have any solutions.Thank you

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You will first need to install a 32-bit to 64-bit cross-compiler, because your 32-bit compiler can't create 64-bit object files. Or install a 64-bit (cross-)compiler and use that to build your native compiler.