[LLVMdev] How to avoid include the same source-file more than once?

[geovanisouza92 at gmail.com]

How can I avoid include the same source-file more than once or the
different files with the same content, when all files will be merged in
only one binary file?

Let me clear this: In my programming language project, two classes with the
same names will be merged, not generating a semantic error or whatever.
Isn't a bug, is a feature. :o)

E.g.

## file1.arc
include "base.arc"

## file2.arc
include "base.arc"

I don't want use C/C++-like style guard or similar.
I think about an list of complete path of each file inside the compiler, or
an checksum, generated over the bytes of file, like git index does.

-- 
@geovanisouza92 - Geovani de Souza
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