FPC JVM

Overview

The FPC backend for the Java Virtual Machine (JVM) generates Java byte code that conforms to the specifications of the JDK 1.5 (and later). While not all FPC language features work when targeting the JVM, most do (or will in the future) and we have done our best to introduce as few differences as possible.

This FPC JVM backend is not related to Project Cooper by RemObjects, nor does FPC now support the Oxygene language.

Snapshots

You can find compiled snapshots of the initial version below (svn r18783, 2011/08/20). These are cross-compilers from the mentioned platform to the JVM. The generated code is not specific to the JVM running on that particular platform.

Installation instructions: unpack the archive file, adjust the path in the unpacked bin\fpc.cfg (Windows) or etc/fpc.cfg (other platforms) so it points to the directory where you unpacked the file, and use the included ppcjvm compiler to compile sources. A number of test files used during development of the JVM backend can be found at http://svn.freepascal.org/svn/fpc/branches/jvmbackend/tests/test/jvm

• Snapshot download links
  • Windows (i386)
  • Mac OS X (universal binary, Mac OS X 10.5 or later)
  • Linux (i386)

If your platform is not listed above, or if you are only interested in building the compiler/rtl from source, a separate archive that only contains the compiled Java components (Jasmin, javapp, BCEL) is also available:

• FPC JVM utilities (you do not need this if you already downloaded one of the files above)

More information

• Basic usage information
• Supported language constructs and other programming information
• Help with debugging the Java class files
• Building the compiler and Java utilities from source
• Information about internal changes to the compiler and RTL (mainly interesting to compiler/RTL developers)