Idris2-boot/INSTALL.md
2020-03-30 13:06:59 +01:00

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# Installation
Idris 2 is built using Idris, and provides support for two default code
generation targets: Chez Scheme, and Racket. To build from source, it requires
at least Idris version 1.3.2 (see https://www.idris-lang.org/download). You
can also build from the generated C.
## Quick summary:
You need a C compiler (default is clang) and Chez Scheme, and optionally
Idris 1.3.2 to build from source.
* If you have Idris 1.3.2 installed:
make install
* If not, and the generated C is available in `dist`, you can install directly
from the generated C:
make install-fromc
The generated C is available in source distributions. It will not be available
if you have cloned directly from https://github.com/edwinb/Idris2
The above commands will build the executable, build the libraries, run the
tests (if Idris 1 is available), then if all is well, install everything. The
default installation directory is `$HOME/.idris2`. You can change this by
setting the `PREFIX` variable in the `Makefile`.
Other settings you can change in the `Makefile` are:
* `OPT` which sets the optimisation level for compiling the generated C. Leave
this blank for Idris 2 to build sooner, or set it to `-O2` for a faster
Idris 2 compiler. `-O2` takes a few minutes!
* `CC` which sets the C compiler to use. `clang` is the default, but `gcc`
always works. `clang` generates code faster.
## Idris
There are several sets of instructions on how to install Idris from source and
binary.
+ [Official ipkg installer for macOS](https://www.idris-lang.org/pkgs/idris-current.pkg)
+ [Source build instructions from the Idris GitHub Wiki](https://github.com/idris-lang/Idris-dev/wiki/Installation-Instructions)
+ [Binary installation using Cabal from the Idris Manual](https://idris.readthedocs.io/en/latest/tutorial/starting.html)
## Code Generation Targets
Only one of these is absolutely necessary, and you can type check code even
with none of them installed. The default code generator targets Chez Scheme.
### Chez
Chez Scheme is available to build from source:
+ https://cisco.github.io/ChezScheme/
Many popular package managers will provide a binary distribution for Chez. Note
that homebrew for Mac OS X provides a version without multithreading support, so
Mac OS X users will want to build from source.
**Note**: If you install ChezScheme from source files, building it locally, make sure
you run `./configure --threads` to build multithreading support in.
### Chicken
Chicken scheme offers binary distributions (and source tar balls) from
+ https://code.call-cc.org/
You can find chicken in many a package manager.
After installing chicken scheme you may need to install the 'numbers' package.
### Racket
Racket is available from:
+ https://download.racket-lang.org/