Re: How to do conditional include

[Paul Smith]

On Tue, 2008-07-22 at 20:35 -0500, Peng Yu wrote:
> I want to include a file only once use the technique that is commonly
> used in any C++ include files, such as
> 
> #ifndef FILENAME_H
> #define FILENAME_H
> 
> #endif
> 
> Could you let me know how to do the similar thing in gnu make?

        ifndef FILENAME_MK
        FILENAME_MK := 1
        
        endif

See the GNU make manual.

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