ObjFW is known to work on the following platforms, but should run on
many others as well:

 +--------------------------+--------------+----------------------+---------+
 | OS                       | Architecture | Compiler             | Runtime |
 +--------------------------+--------------+----------------------+---------+
 | FreeBSD 8.0              | x86          |                      | GNU     |
 +--------------------------+--------------+----------------------+---------+
 | Linux 2.6.*              | x86          | gcc 4.4.1            | GNU     |
 | Linux 2.6.*              | x86          | llvm/clang r83252    | GNU     |
 | Linux 2.6.*              | x86_64       | gcc 4.4.1            | GNU     |
 +--------------------------+--------------+----------------------+---------+
 | iPhone OS 2.2.1 - 3.1.2  | arm          | gcc 4.2              | Apple   |
 | Mac OS X 10.5            | ppc          | gcc 4.0 + 4.2        | Apple   |
 | Mac OS X 10.5            | ppc64        | gcc 4.0 + 4.2        | Apple   |
 | Mac OS X 10.5 - 10.6     | x86          | gcc 4.0 + 4.2        | Apple   |
 | Mac OS X 10.5 - 10.6     | x86_64       | gcc 4.0 + 4.2        | Apple   |
 +--------------------------+--------------+----------------------+---------+
 | MirBSD 10uAB             | x86          | gcc 4.4.2            | GNU     |
 +--------------------------+--------------+----------------------+---------+
 | NetBSD 4.0               | x86          | gcc 4.1.2 prerelease | GNU     |
 +--------------------------+--------------+----------------------+---------+
 | OpenBSD 4.6              | x86_64       | gcc 4.2.4            | GNU     |
 +--------------------------+--------------+----------------------+---------+
 | OpenSolaris 2009.06      | x86          |                      | GNU     |
 | OpenSolaris 2009.06      | x86_64       |                      | GNU     |
 +--------------------------+--------------+----------------------+---------+
 | Windows XP - 7 / cygwin  | x86          |                      | GNU     |
 | Windows XP - 7 / mingw32 | x86          |                      | GNU     |
 +--------------------------+--------------+----------------------+---------+

Basically, it should run on any POSIX system to which gcc4 or a recent
clang version has been ported. If not, please send an e-mail with a bug
report.
