PL/I can be compiled, linked and debugged in 32-bit and 64-bit mode on Windows and the following UNIX platforms: Solaris (SPARC), Red Hat Linux (Intel), SUSE Linux (Intel). AIX, HP-UX Itanium and z/Linux are not currently supported.
As no PL/I compiler implementation exists on HP-UX Itanium or the z/Linux platforms, then any remote compilation of PL/I programs to those platforms from the Eclipse IDE is not possible. You will still be able to create a remote connection to those platforms and create PL/I programs and include files. However, when attempting to compile, the Ant build will fail. The same problem will occur on AIX too.