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

 +-------------------------+--------------+----------------------+
 | OS                      | Architecture | Compiler             |
 +-------------------------+--------------+----------------------+
 | FreeBSD >= 8.0          | x86          |                      |
 +-------------------------+--------------+----------------------+
 | Linux                   | x86          | gcc 4.4.1            |
 | Linux                   | x86          | llvm/clang r83252    |
 | Linux                   | x86_64       | gcc 4.4.1            |
 +-------------------------+--------------+----------------------+
 | iPhone OS >= 2.2.1      | arm          | gcc 4.2              |
 | Mac OS X >= 10.5        | ppc          | gcc 4.0 + 4.2        |
 | Mac OS X >= 10.5        | ppc64        | gcc 4.0 + 4.2        |
 | Mac OS X >= 10.5        | x86          | gcc 4.0 + 4.2        |
 | Mac OS X >= 10.5        | x86_64       | gcc 4.0 + 4.2        |
 +-------------------------+--------------+----------------------+
 | MirBSD >= 10uAB         | x86          | gcc 4.4.2            |
 +-------------------------+--------------+----------------------+
 | NetBSD >= 4.0           | x86          | gcc 4.1.2 prerelease |
 +-------------------------+--------------+----------------------+
 | OpenBSD >= 4.6          | x86_64       | gcc 4.2.4            |
 +-------------------------+--------------+----------------------+
 | OpenSolaris >= 2009.06  | x86          |                      |
 | OpenSolaris >= 2009.06  | x86_64       |                      |
 +-------------------------+--------------+----------------------+
 | Windows >= XP / cygwin  | x86          |                      |
 | Windows >= XP / mingw32 | x86          |                      |
 +-------------------------+--------------+----------------------+

Basically, it should run on any POSIX system to which gcc4 has been
ported. If not, please send a bug report.
