### Setting Up Prerequisites

Currently, only Ubuntu 14.04+ is officially supported as primary development environment.

There are several dependencies, that should be installed manually. The following list is required for building:

- `gcc` or any C99-compliant compiler
  - native
  - arm-none-eabi
- `cmake` >= `2.8.12.2`
- `bash` >= `4.3.11`
- `cppcheck` >= `1.61`
- `vera++` >= `1.2.1`
- `python` >= `2.7.6`

```bash
sudo apt-get install gcc g++ gcc-arm-none-eabi cmake cppcheck vera++ python
```

To make our scripts run correctly, several shell utilities should be available on the system:

- `find`
- `awk`
- `wget`

### Building Debug Version

To build debug version for Linux:

```bash
python tools/build.py --debug
```

To build debug version for Linux without LTO (Link Time Optimization):

```bash
python tools/build.py --debug --lto=off
```

Add custom arguments to CMake:

```bash
python tools/build.py --cmake-param CMAKE_PARAM
```

Add toolchain file:

The cmake dir already contains some usable toolchain files.

```bash
python tools/build.py --toolchain TOOLCHAIN
```

Use (jerry|compiler-default|external libc) libc:

```bash
python tools/build.py --libc LIBC
```
The possible arguments are `jerry` , `compiler` , `<path of external lib>`

To get more available buildoptions for Linux:

```bash
python tools/build.py --help
```

### Checking Patch

```bash
python tools/run-tests.py --precommit
```