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How do I declare bit variables as extern?

Guys,

How can I declare a bit variable defined in a file as "extern" when that variable is defined in another file?

Although in the page 99 (C51, uVision2, V2.38) describes that I should be able to put:

extern bit mybit0;

I already have defined previously in a global file:

int bdata ibase;
sbit mybit0 = ibase ^ 0;

But yet, I receive this error message:

File (line xx): error C231: 'mybit0': redefinition

What I am missing? Is there any other way to declare a "dbata" variable and declare its bits for usage in multiple files?

Both files are in the project. If I create a large single file with all my code (and all the variable declarations - no extern) I do not get any error message.

Please be gentle and specific in you answers, so I can understand your wisdom.

Thanks in advanced,

dB

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