OK, nevermind. I fired up a Windows VM and see that TortoiseSVN is using 1.1.1 so it must be possible. I did not look to see if they added any patches to the build process but I would assume that it must be supported now.
- Fwd: Trying to build svn 1.12.2 from tarbal... swdev
- Re: Trying to build svn 1.12.2 from tar... Nathan Hartman
- Re: Trying to build svn 1.12.2 from tarball Daniel Shahaf
- Re: Trying to build svn 1.12.2 from tarball Nico Kadel-Garcia
- Re: Trying to build svn 1.12.2 from tarball Andreas Stieger
- Re: Trying to build svn 1.12.2 from tarball Nathan Hartman
- Re: Trying to build svn 1.12.2 from tar... swdev
- Re: Trying to build svn 1.12.2 fro... Mark Phippard
- Re: Trying to build svn 1.12.2... swdev
- Re: Trying to build svn 1.12.2... Mark Phippard
- Re: Trying to build svn 1.12.2... Mark Phippard
- Re: Trying to build svn 1.12.2... Andreas Stieger
- Re: Trying to build svn 1.12.2... swdev
- Re: Trying to build svn 1.12.2... swdev
- Re: Trying to build svn 1.12.2... Mark Phippard
- Re: Trying to build svn 1.12.2... Branko Čibej
- Re: Trying to build svn 1.12.2... Branko Čibej
- Re: Trying to build svn 1.12.2... swdev
- Re: Trying to build svn 1.12.2... Branko Čibej
- Re: Trying to build svn 1.12.2... Nico Kadel-Garcia
- Re: Trying to build svn 1.12.2... swdev