Red is a new programming language strongly inspired by Rebol, but with a broader field of usage thanks to its native-code compiler, from system programming to high-level scripting, while providing modern support for concurrency and multi-core CPUs.
Red has its own complete cross-platform toolchain, featuring two compilers, an interpreter and a linker, not depending on any third-party library, except for a Rebol2 interpreter, required during the bootstrap phase. Once complete, Red will be self-hosted.
The Red software stack also contains another language, Red/System, which is a low-level dialect of Red. It is a limited C-level language with a Red look'n feel, required to build Red's runtime library and be the target language of Red's compiler. More information at red-lang.org.
The Red toolchain comes as a single half-megabyte executable file that you can download from here for the big-3 platforms.
Put the downloaded red binary in a folder that's in the PATH, or just in the working folder.
In a code or text editor, write the following Hello World program:
Red [ Title: "Simple hello world script" ] print "Hello World!"
Save it under the name: hello.red
From a terminal (works from DOS too), run it with:
$ red hello.red
You should see the Hello World! output.
Want to generate a compiled executable from that program?
$ red -c hello.red $ ./hello
Want to cross-compile to another supported platform?
$ red -t Windows hello.red $ red -t Darwin hello.red $ red -t Linux-ARM hello.red
The command-line options are:
red [options] [file]
Any Red or Red/System source file. If no file and no option is provided, the REPL will be launched. If a file with no option is provided, the file will be simply run by the interpreter (it is expected to be a Red script with no Red/System code).
-c, --compile : Forces generation of an executable in the working folder. -d, --debug, --debug-stabs : Compile source file in debug mode. STABS is supported for Linux targets. -dlib, --dynamic-lib : Generate a shared library from the source file. -h, --help : Output this help text. -o <file>, --output <file> : Specify a non-default [path/][name] for the generated binary file. -r, --no-runtime : Do not include runtime during Red/System source compilation. -t <ID>, --target <ID> : Cross-compile to a different platform target than the current one (see targets table below). -v <level>, --verbose <level> : Set compilation verbosity level, 1-3 for Red, 4-11 for Red/System. -V, --version : Output binary version string. --red-only : Stop just after Red-level compilation. Use higher verbose level to see compiler output. (internal debugging purpose)
MSDOS : Windows, x86, console (+ GUI) applications Windows : Windows, x86, GUI applications Linux : GNU/Linux, x86 Linux-ARM : GNU/Linux, ARMv5 Darwin : MacOSX Intel, console-only applications Syllable : Syllable OS, x86 Android : Android, ARMv5 Android-x86 : Android, x86
Just run the
redbinary with no option to access the REPL.
-=== Red Console alpha version ===- (only ASCII input supported) red>>
You can use it to test rapidly some Red code:
red>> 1 + 2 == 3 red>> inc: func [n][n + 1] == func [n][n + 1] red>> inc 123 == 124
The compiler and linker are currently written in Rebol. Please follow the instructions for installing the compiler toolchain in order to run it from sources:
Clone this git repository or download an archive (
ZIPbutton above or from tagged packages).
rebolbinary, put it in root folder, that's all!
Let's test it: run
./rebol, you'll see a
>>prompt appear. Windows users need to double-click on the
rebol.exefile to run it.
From the REBOL console type:
>> do/args %red.r "%tests/hello.red"
The compilation process should finish with a
...output file size message. The resulting binary is in the working folder. Windows users need to open a DOS console and run
hello.exe from there.
To see the intermediary Red/System code generated by the compiler, use:
>> do/args %red.r "-v 2 %tests/hello.red"
Some anti-virus programs are a bit too sensitive and can wrongly report an alert on some binaries generated by Red, if that happens to you, please fill a ticket here, so we can report the false positive.