=begin
= Ruby 1.9 Supported Platforms
Ruby 1.9 is supported on various platforms, at four "support levels".

== support levels
The support levels are "supported", "best effort", "perhaps" and "not
supported". Note that "Platform has a maintainer" includes "Some of core
developers always develop Ruby on it", for example, Debian GNU/Linux.

:Supported
Officially, fully supported. Ruby won't be released while Ruby
has errors on "supported" platforms.

A platform is "supported" when
* The platform has at least one maintainer. One or more maintainer(s)
maintains Ruby on it.
* We can build Ruby for it.
* We can expect that "make test-all" almost succeed.
* We have the nightly build&test environment for it.

:Best effort
We want Ruby to support the platform but some errors occur constantly
on it.
Ruby won't be released while Ruby has serious errors on
"best effort" platforms.

A platform is "best effort" when
* The platform has at least one maintainer.
* We can build Ruby for it.
* We can expect that "make test-all" success except some known
problems, XOR, we have no nightly build&test environemnt for it.

:Perhaps
We think Ruby can work on the platform but it is not officially
supported. Ruby can be released even if Ruby has errors on it.

A platform is "perhaps" when
* A similar platform is "supported" or "best effort".
* Or, a patch for the platform which seems to be good was recently applied.

:Not supported
We don't know whether Ruby works on it or not.

== Ruby 1.9.3
(2011-07; Candidates)

:Best effort
* mswin32, mswin64 (usa)
* mingw (nobu)
* RHEL, CentOS6 (kosaki)
* CentOS5 (Eric Wong)
* Debian (wyhaines)
* IA-64 (Debian GNU/Linux) (takano32)
* FreeBSD (knu)
* OpenBSD (Jeremy Evans)
* Mac OS X (mrkn)
* AIX (kanemoto)
* Solaris (ngoto)
* Symbian OS (azov)
:Perhaps
* Other POSIX compatible systems.
:NotSupported
* Mac OS X with llvm-gcc/clang

== Support plan of Ruby 1.9.1
:Supported
* Debian GNU/Linux 4.0 on IA32
:Best effort
* mswin32, x64-mswin64, mingw32
* Mac OS X 10.6 (Intel)
* FreeBSD 6 and later (amd64, IA32)
* OpenSolaris
:Perhaps
* Other Linux distributions
* Other versions of Mac OS X.
* mingw64
* cygwin
* Other POSIX compatible systems.
* BeOS (Haiku)
:Not supported
Anything else.

== Maintainer Wanted
These platforms were once supported by Ruby 1.6 or Ruby 1.8 but Ruby 1.9 does not support them.
We want patches and maintainer of Ruby for them.
* OpenVMS
* WinCE
* OS/2
* bcc32
* Classic MacOS

=end