Re: generate a File-ID??

[Tommy Nordgren]

3 jul 2006 kl. 20.58 skrev Torsten Mohr:

> Hi,
>
> in a large project with several source files (in C) for an
> embedded target with not much ROM we want to use a self-written
> "assert" that does not print out the file name (too much program
> space) but uses a "file ID" that i want to hand over to the
> compiler when generating the object file.
        Just keep your file names short. With suitable compiler options,
you will get only a single instance of the file name string constant.
        GCC and most other compilers can be configured to do this.
Internally, your code will then refer to the string via a pointer to  
the string memory,
which is incidentally the same size as an int on many machines.
With 8 character filename and four byte ints, the net cost will be of  
the order 5 bytes.
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Tommy Nordgren
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