Windows 64-bit build #3544

Would be very nice to have a 64-bit windows build for the 0.9 release.

Now that we switched to Ubuntu 12.04 for building I don't think there are any blockers anymore.

ACK

If this is done, the question is what will the 64-bit installer do if the 32-bit version is already installed?

Do you expect it to do anything special?

There is nothing wrong with having a 32-bit and 64-bit version installed at the same time. This is easier for testing/comparing as well.

(they can't run with the same data directory at the same time, obviously, but this is enforced in the same way as running two 32-bit instances at the same time by locking the data directory)

I'm just concerned that if someone who doesn't realize what's happened and has been using the 32-bit version downloads and installs the 64-bit version, they may think it's just an upgrade like past upgrades, replacing the old version, not knowing that there will be two versions now, and they may end up inadvertently running the old, 32-bit version and getting confused.

On Thu, Jan 16, 2014 at 1:03 PM, Wladimir J. van der Laan < notifications@github.com> wrote:

Do you expect it to do anything special?

There is nothing wrong with having a 32-bit and 64-bit version installed at the same time. This is also easier for testing/comparing as well.

(they can't run with the same data directory at the same time, obviously, but this is enforced in the same way as running two 32-bit instances at the same time by locking the data directory)

— Reply to this email directly or view it on GitHubhttps://github.com/bitcoin/bitcoin/issues/3544#issuecomment-32459572 .

Ok, that would be something to mention in the release notes.

IMHO the bitness should be seen in about or something at least (exe file meta-data perhaps)? I never experiemented with a x64 build, but it would be a nice addition anyway.

@Diapolo Yes, adding the bitness to the about dialog would be a good idea, many Windows progams have this so it's sort of expected.