Ubuntu – the difference between wine(x86) and wine(amd64)

PlayOnLinux

You can use PlayOnLinux to install applications which run on different versions of wine. PlayOnLinux provides an option of installing some libraries as well along with installation of a program.

To mange different versions of wine, go to Tools > Manage Wine Versions

If you want to add your custom compiled version of Wine to this list, create new wine "version" in ~/.PlayOnLinux/wine/linux-amd64 or linux-x86 and copy your custom installation there.

While installing an application you have an option of installing it a new virtual drive, in which you can install a different version of wine.

If you look closely you will see, that actually only the -dbg, -dev and -doc packages contain a version 4 in their package name, while the packages that ship the actual compiled libcurl library are still at version 3.

For a discussion on Debian about this, see this link: https://lists.debian.org/debian-release/2007/04/msg00257.html

If I understand it right, there was a change in the API but not the ABI, so the binary packages were left at version 3, while the development files needed a version bump.

It also means that for example libcurl4-openssl-dev is the corresponding development package for libcurl3 despite the different version in the package name. You can see that if you take a look at libcurl3-dev (which is a virtual package and points to libcurl4-openssl-dev:

No current or candidate version found for libcurl3-dev
Package: libcurl3-dev
State: not a real package
Provided by: libcurl4-openssl-dev (7.47.0-1ubuntu2), 
    libcurl4-openssl-dev (7.47.0-1ubuntu2.2)

The above snippet was taken on Ubuntu 16.04 but this will probably look similar on 14.04.