Re: How to use a function without their sources

[nazriel]

On Friday, 18 January 2013 at 18:10:35 UTC, Maxim Fomin wrote:
On Friday, 18 January 2013 at 17:47:42 UTC, nazriel wrote:
On Friday, 18 January 2013 at 17:02:51 UTC, Jordi Sayol wrote:
Is there a way to use a function from a static D library 
without importing their D sources nor their DI interface?

lib.d:

extern(C) void printf(const char*, ...);

void foo() {
        printf("%s".ptr, "hi".ptr); 
}

test.d:

extern(C) void _D3lib3fooFZv();

void main() {
        _D3lib3fooFZv();
}

Hehe.

Now, to be honest that is a good question. How to handle name 
mangling?
Maybe pragma(mangleOf, "") by Alex Petterson could help.

----lib.d----
extern(C) void printf(const char*, ...);

extern(C) void foo() {
        printf("%s\n".ptr, "hi".ptr);
}
----main.d----
extern extern(C) void foo();

void main() {
        foo();
}
--------------

# dmd mylib.d -lib -oflibmylib.a
# dmd main.d -L-lmylib -L-L.

This is possible if inside library non-member functions are 
marked as extern(C). Otherwise a .di file is needed.

Nice!
This should be mentioned at Language Reference, so it won't get 
lost.