Mailinglist Archive: opensuse-programming (148 mails)

[Mark Gray <markgray-temp-1093527331@xxxxxxxxxxxx>]

John Lamb <J.D.Lamb@xxxxxxxxxxxxxx> writes:

> Steven T. Hatton wrote:
>> No, I am specifically trying to initialize it at compile time.  What the 
>> stupid compiler or linker is trying to do is a different story! ;)  The code 
>> works if I build all the parts in the same compilation unit.

> Fair enough, but look at it from the compiler's point of view. If you 
> use a function to initialise a static const and the function is not 
> defined in the same compilation unit, the compiler can't initialise the 
> const at compile time. It's tricker, though I assume it's possible, to 
> design a static linker that could do the additional compilation at link 
> time to assign a value to the const. I think the gnu linker won't do it 
> except, maybe, in simple cases.
> 
>> I wonder if playing around with extern might work?
> 
> Did you mean to type "export". I don't think gcc handles export yet,

Not yet:

markgray@soyo:/ARK/BOOKS/Thinking_in_C++/tmp> cat export.cpp
export template<typename T> const T& min(const T&, const T&);

export template<typename T> const T& min(const T& a, const T& b) {
    return (a < b) ? a : b;
}

int main() {}
markgray@soyo:/ARK/BOOKS/Thinking_in_C++/tmp> g++ -o export.o export.cpp
export.cpp:1: warning: keyword `export' not implemented, and will be ignored
export.cpp:3: warning: keyword `export' not implemented, and will be ignored
markgray@soyo:/ARK/BOOKS/Thinking_in_C++/tmp>