Re: why #if defined(__cplusplus)

[William J Beksi <wjbeksi@xxxxxxxxxxx>]

Hi John,

John Que wrote:
> #if defined(__cplusplus)
> #define NULL 0
> #else
> #define NULL ((void *)0)
> #endif
__cplusplus is used by the c++ compiler.

> I wonder:
> Why is this #ifdef exist at all if we know for sure that you can't 
> compile the kernel as a C++ source code?
Because sometimes we want to use the c++ compiler to compile some other 
source code. When we compile the kernel we use the c compiler.

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William J Beksi                          <wjbeksi@xxxxxxxxxxxxxxxxxxxxx>
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