Free retargetable compiler technology software for linux

Pagelets Technology project allows developers to embed Java scripting elements inside of text documents in order to generate dynamic text-based output.

The idea and functionality behind Pagelets is very similar to Java Server Pages with one huge difference - Pagelets are not tied to the HTTP protocol. That difference opens up a plethora of new possibilities and uses for the technology.

For example, Pagelets can be used to dynamically render the content of email messages, or as a simple source code generator, or to render dynamic content in any other environment - whether that environment is tied to the HTTP protocol or not. Basically, Pagelets are - JSP without HTTP.

Free Pascal (aka FPK Pascal) is a 32 or 64 bit (from 1.9.6) pascal compiler. Free Pascal Compiler is available for different processors Intel x86, Amd64/x86 64 (from 1.9.6), PowerPC (from 1.9.2), Sparc (from 1.9.6) and Motorola 680x0 (1.0.x only).
The following operating systems are supported Linux, FreeBSD, NetBSD, MacOSX/Darwin, MacOS classic, DOS, Win32, OS/2, BeOS, SunOS (Solaris), QNX and Classic Amiga.
Main features:
- Very clean language Pascal is a very nice language, your programs will be more readable and maintainable than for example in C, and lets even forget about C++. And you dont need to give up the power, the Pascal language is as powerful as you want it.
- No Makefiles Unlike most programming languages, Pascal does not need Makefiles. You can save huge amounts of time, the compiler just figures out itself which files need to be recompiled.
- Pascal compilers are Fast with a big F and Free Pascal is no exception. Yes, you no longer need to grow roots while compiling your programs, just hit the compile key and its done, even for large programs.
- Each unit has its own identifiers In Pascal you never need to worry about polluting the namespace, like in C where an identifier needs to be unique accross the entire program. No, in Pascal each unit gets its own namespace and thats very relaxed.
- Integrated development environment Free Pascal comes with an IDE which work on several platforms, in which you can write, compile and debug your programs. You will save huge amounts of time using the IDE, the best programming friend you have.
- Great integration with assembler Do you think pascal is for wimps who need to learn programming? WRONG! Its excellent for high tech programming and for the supreme nerds among you we have the integrated assemblers. You can easily mix assembler code and Pascal code, in the language you wish? Prefer Intel styled assembler? No problem, if its needed Free Pascal will convert it to ATT for you. Do you want to convert your program into a source file for Nasm? No problem, and all ATT assembler in your source files is automatically converted.
- Object oriented programming And if you do the serious programming, you are of course very interested in object oriented programming. Use the Turbo Pascal and Object Pascal ways of OOP according to your taste. The FCL and Free Vision and provide you with the powerful object libraries you need. For your database needs we support PostgreSQL, MySQL, Interbase and ODBC.
- Smartlinking Free Pascals smart linker leaves out any variable or code that you do not use. That makes small programs small with a big S, while they are still statically linked, avoiding DLL hell!
- Distribution independence (Linux) As a result of this, software compiled by the Linux version of Free Pascal runs on any Linux distribution, making it much, much, easier to make your software support multiple Linux distributions.
- Available for a lot of platforms on several architectures Free Pascal is available for more platforms than most other Pascal compilers and allows easy cross-compiling, just change the target in the IDE and compile! And there is work going on for even more platforms and processors.
- Compatible Have existing code? Free Pascal is more compatible with it than any other Pascal compiler. We are almost completely compatible with Turbo Pascal and quite well compatible with Delphi source code. If you have code in another language, like C or assembler, just use favorite compiler for it and call it from Free Pascal.
Version restrictions:
- For the intel 80x86 version at least a 386 processor is required, but a 486 is recommended. For the motorola 680x0 version, a 68020 or later processor is recommended. In all cases, a minimum of 8 Megabytes of RAM is recommended, but the compiler is reported to work with 4 Megabytes of RAM.

MetaC language extends C in a 100% backward compatible way with reflective features and techniques for refactoring, reconfiguring and modifying arbitrary C source code.
Therefore, the extensions provide special metadata types for working with source code information, syntactical structures for the definiton of code templates, and metafunctions to gather information about source code and refactor, modify, delete, or insert code.
Some of the modifications that can be done with MetaC, are also realizable with the C preprocessor. But the C preprocessor suffers certain limitations that can be overcome using MetaC.
The area of applications for MetaC is not limited to specific domains. But its concepts and its motivation has been derived from problems of CASE tools for embedded real-time systems (e.g. Mathworks Matlab, Telelogics Tau, Aonixs STP).
- Source code reconfiguration and refactoring in general.
- Abstraction of APIs and hardware-specific or vendor-specific implementations of well-defined functionallity (ever got locked to a specfic API by a RTOS vendor?).
- Source code instrumentation for WCET-analysis
- Adaption of source code to multiple embedded targets (especially differing native platform APIs) based upon an abstract machine model
- Application specific debug support (e.g. control-flow or data-flow tracing)
- Verification of domain- and application-specific constraints (e.g. MISRAs rules set for C based programs in automotive applicaitons)
Advantages of the Metaprogramming Approach:
- Source code modification is done based upon syntax. In consequence invalid modifications can be detected at the moment they are executed.
- Decision for code modifications can be made upon user parameters and information derived from the source code
- Crosscutting reconfigurations (i.e. reconfigurations concerning multiple functions or modules) of source code are possible.
Enhancements:
- Support for Win32 hosts was added.
- Support for initializer lists was added.
- Some C99 issues were fixed.
- Several more enhancements were made.
- A whole bunch of bugs were fixed.

Intel C++ Compiler application is a full fledged C/C++ compiler and debugger suite. Its aim is to provide outstanding performance for all Intel 32-bit and 64-bit processors, while not requiring the need for porting applications from other compilers.

It provides optimization technology, threaded application support, and features to take advantage of Hyper-Threading technology. It is substantially source and object code compatible with GNU C, providing fullest compatibility with GCC and G++ 3.x/4.x both in terms of code and of API. It is thereby also easy to integrate with existing development environments.

Aubit 4GL compiler is a project to make a free Informix-4GL compatible compiler. Aubit 4GL compiler translates 4GL source into executable programs, enabling fast creation of screen/form-based applications.

With support for SQL statements forming an intrinsic part of the language, its especially suitable for developing database-oriented applications. Database connectivity is provided for PostgreSQL, Informix, and ODBC. It supports both ncurses (console mode) and GTK+ (GUI mode) output.

The Java Brainfuck Compiler is a compiler for the uniquely powerful Brainfuck language, which produces Java bytecode that will run on any Java Virtual Machine (with no intermediate steps such as going by way of Java code).