:: Re: [Libbitcoin] Libbitcoin and Qt
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Auteur: Bedeho Mender
Datum:  
Aan: Eric Voskuil
CC: libbitcoin@lists.dyne.org
Onderwerp: Re: [Libbitcoin] Libbitcoin and Qt
Hi Eric, thanks for the quick response!

It doesn't appear so to me, but perhaps I am misunderstanding the problem.

When I make a minimal Qt project (
https://github.com/bedeho/QtLibbitcoin/blob/master/main.cpp) which uses
MSVC2013, then if I just
include the libbitcoin header #include <bitcoin/bitcoin.hpp>, then I get
lots of compile errors.

The errors seem to be associated with certain c++11 features which msvc2013
does
not support fully. Here is the first error I get

C:\libbitcoin\libbitcoin\include\bitcoin/bitcoin/math/hash.hpp(31) : error
C2146: syntax error : missing ';' before identifier 'size_t'

Which references line 31 in hash.hpp:

constexpr size_t short_hash_size = 20;

In this case, the problem seems to be that constexpr is a new feature which
msvc2013 does not support, from what I could understand by
reading up, and that CTP_Nov2013 was required for this reason. For example,
the release notes on this CTP explicitly mentions constexpr
support (http://www.microsoft.com/en-us/download/details.aspx?id=41151):
"constexpr (except for constructors)"

Am I on the wrong track here? If not, getting Qt to work with CTP
is necessary to for using Libbitcon with Qt.

bedeho


On 16 March 2015 at 22:48, Eric Voskuil <eric@???> wrote:

> You can link to the libbitcoin VC++ libs using the basic v120 compiler,
> they are compatible.
>
> e
>
>
> > On Mar 16, 2015, at 8:58 AM, Bedeho Mender <bedeho.mender@???>
> wrote:
> >
> > I have built libbitcoin with msvc using the compiler Microsoft Visual
> C++ Compiler Nov 2013 CTP.
> >
> > I am trying to use libbitcoin with a Qt project running in QtCreator,
> however it seems this is not easy to do, that is get Qt to get with the CTP.
> >
> > Does anyone have any advice on this?
> >
> > best
> > Bedeho
> > _______________________________________________
> > Libbitcoin mailing list
> > Libbitcoin@???
> > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/libbitcoin
>