need help in 64-bit code

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Hello All,

I am writing a driver and apis for it , these should be compatible for 32 bit and 64 bit system.

To have the compatability i have used the macro CONFIG_X86_64 in .config .
But this macro is only working in driver.

Can any one tell me what should i do to make my user space files compatable.
At present i am using a user defined macro and changing it (define/ undef) every time i change the system.

Can i have common makefile for 2.4 and 2.6 driver module.
At present i am using 2 differnt makefiles and changing them when ever i cahnge the kernel.

Thanks
Sudheer


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