Actually, now that I read the instructions in the manual, I am unsure
whether .lib files can only be created for dll files. You are creating
.a files because the test code doesn't work for dll's.
Maybe my suggestion of creating a .lib file won't work.
But if so, then I am unsure why MSVC is not working with the .a file
you have made with MSYS. You could try changing the calling
conventions. I think it uses cdecl by default an maybe it should use
stdcall, but that is only a guess.
Maybe Jason Moxham has time to play around and figure out how to make
this work?
I'm really tempted to just say MPIR does not support MSYS at all. But
I think that would be a mistake, as there are lots of people who use
MSYS.
Bill.
2009/6/19 Bill Hart <goodwillh...@googlemail.com>:
> Peter, you might be interested in the fact that Jason Moxham has been
> creating some batch files to automatically build MPIR in MSVC. That
> should make it a whole lot easier to do. No need to muck around with
> MSYS/MinGW at all.
>
> For the moment you are having problems with combining MSYS and MSVC. I
> had imagined that there was just one unresolved external symbol,
> alloca. But it appears that *all* symbols are unresolved.
>
> Looking at the MPIR manual (which I did not write), on page 13 in the
> section MS Windows DLL's it tells you how to create an Microsoft .lib
> import library.
>
> It seems that MSVC needs this in order to know what symbols are
> available in the MSYS built mpir.a which you created. Have you done
> this step?
>
> Sorry this is proving difficult, but you are literally the first
> person who has ever tried to use an MSYS built MPIR library from MSVC,
> that I know of. The standard way of using MPIR in Windows, and the way
> which we know how to support, is to build MPIR using the provided
> Visual Studio Solution files provided by Brian Gladman. But I admit
> that is difficult to do if you've never done something like that
> before. Shortly it will be as simple as running a batch script.
>
> Since you are so close to getting it to work, I would try making the
> .lib import library. I can't guarantee that is going to work first go
> either. You may also need to change the calling conventions option in
> MSVC (or maybe not, I don't know). Or you can wait a little longer
> until we issue a new version of MPIR with the new batch scripts and
> rewrite the documentation. Then things should be much simpler for new
> users.
>
> Another option you might eventually be interested in is Sage for
> Windows. It uses MPIR, but gives you an easy to use Python language
> and access to all sorts of maths libraries without you having to do
> any work. If you only write C/C++ then that isn't really an option for
> you at this stage.
>
> Bill.
>
> 2009/6/19 Peter_APIIT <peterap...@gmail.com>:
>>
>> int main()
>> {
>> /* mpz_class first(123), second(123), result(0);
>>
>> result = first + second;
>> result = result - second;
>> result = first * second;
>> result = first / second;
>>
>> cout << result.get_d();
>> */
>> mpz_t a, b, c;
>>
>> mpz_init(a);
>> mpz_init(b);
>> mpz_init(c);
>>
>> mpz_set_str(a, "123", 10);
>> mpz_set_str(b, "1244", 10);
>> mpz_set_str(c, "111231234578", 10);
>>
>> mpz_add(a, a, b);
>> gmp_printf("Result is %Zd", a);
>>
>> mpz_clear(a);
>> mpz_clear(b);
>> mpz_clear(c);
>>
>>
>> return 0;
>> }
>>
>>
>> error LNK2019: unresolved external symbol _isascii referenced in
>> function ___gmp_doprnt libmpir.a
>>
>> error LNK2019: unresolved external symbol _snprintf referenced in
>> function ___gmp_doprnt_mpf2 libmpir.a
>>
>> fatal error LNK1120: 2 unresolved externals D:\C++\MPIR\Exercise\Debug
>> \Exercise.exe
>>
>>
>> Actually, i use mpir library as big Num library and to generate prime
>> number for RSA. What is your opinion ?
>>
>> This is too difficult to use.
>>
>> Please help.
>>
>> Thanks.
>> >>
>>
>
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