Pork is a set of tools built around the elsa C/C++ parser. The primary focus of pork is to provide automated refactoring (Gecko:DeCOMtamination) and static analysis tools for Mozilla2. Pork announcement.
To install the tools on your regular machine, follow Static Analysis/Installing the Oink Stack
Pork is a fork of oink. In the future pork should become a development branch for oink.
More info for pork can be found on Taras' blog.
- GCC 3.4.x or older that can successfully build Mozilla. 64bit Ubuntu, 32bit RHEL/CentOS are known to work. 32bit Ubuntu/Debian feature a linker bug that prevents Mozilla from building with gcc 3.4.6. Note: Recent work on Pork's Elsa allows it to be used with GCC 4.2
- MCPP is required for refactoring tools
- SpiderMonkey is required by DeHydra
- Bison and Flex
- patchutils are recommended to manage manual and automatic patches
- MQ extension for hg is recommended. Alternatively, quilt can be used instead.
Pork is broken down into tools that focus on a specific tasks. The tools can rarely be combined and thus should be applied incrementally.
- Outparamdel rewrites code using outparameters to utilize the return value instead. Blog entry
- Prcheck is a static analysis tool which produces patches as output. It is useful for correcting bugs that resulting PRBool behaving more like an int than a C++ bool. Blog entry
- Garburator rewrites nsCOMPtrs allocated on the stack into stack variables to assist the XPCOMGC project.Blog entry
- Squash is now obsolete. It was primarily written to explore how elsa can be utilized to assist with Gecko:DeCOMtamination. Many rewriting strategies and patching code were first implemented in squash.
- PorkVM is a CentOS virtual machine image with a presetup pork + moz checkout.
- PorkBarrel is a multiplexer(ala make -j) for the pork tools. It can combine patch output for patch-producing tools and save per-file output for DeHydra. The repository also contains a frontend to do nightly runs of prcheck.
- Dehydra GCC a static analysis plugin for GCC.
Differences from Mainstream
In addition to adding more oink tools, pork has some differences from Elsa and Elkhound.
- Elkhound has been extended to provide end-of-node position information
- Elsa mods:
- Expression AST nodes were modified to include end-of-node info + associated bugfixes
- Elsa has been extended to support MCPP's macro-undo(-K) mode. Additional APIs were added to convert post-preprocessing source coordinates into pre-preprocessing ones
- Elsa has received bugfixes to work with recent GCC (4.2) headers