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![NekoVM](https://cloud.githubusercontent.com/assets/576184/14234981/10528a0e-f9f1-11e5-8922-894569b2feea.png)
[![TravisCI Build Status](https://travis-ci.org/HaxeFoundation/neko.svg?branch=master)](https://travis-ci.org/HaxeFoundation/neko)
[![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/github/HaxeFoundation/neko?branch=master&svg=true)](https://ci.appveyor.com/project/HaxeFoundation/neko)
# Neko Virtual Machine
See http://nekovm.org/
## Snapshot Builds
### Windows
Compiled binaries can be found in the "artifacts" tab of each [AppVeyor build](https://ci.appveyor.com/project/HaxeFoundation/neko/history).
### Mac
Neko snapshot of the latest master branch can be built using [homebrew](http://brew.sh/) in a single command: `brew install neko --HEAD`. It will install required dependencies, build, and install Neko to the system. The binaries can be found at `brew --prefix neko`.
Use `brew reinstall neko --HEAD` to upgrade in the future.
### Linux
Ubuntu users can use the [Haxe Foundation snapshots PPA](https://launchpad.net/~haxe/+archive/ubuntu/snapshots) to install a Neko package built from the latest master branch. To do so, run the commands as follows:
```
sudo add-apt-repository ppa:haxe/snapshots -y
sudo apt-get update
sudo apt-get install neko -y
```
Users of other Linux/FreeBSD distributions should build Neko from source. See below for additional instructions.
## Build instruction
Neko can be built using CMake (version 3.x is recommended) and one of the C compilers listed as follows:
* Windows: Visual Studio 2010 / 2013 / 2015 / 2017
* Mac: XCode (with its "Command line tools")
* Linux: gcc (can be obtained by installing the "build-essential" Debian/Ubuntu package)
Neko needs to link with various third-party libraries, which are summarized as follows:
| library / tool | OS | Debian/Ubuntu package |
|-----------------------------------------|-------------|-----------------------------------------------------------|
| Boehm GC | all | libgc-dev |
| OpenSSL | all | libssl-dev |
| PCRE | all | libpcre3-dev |
| zlib | all | zlib1g-dev |
| Apache 2.2 / 2.4, with apr and apr-util | all | apache2-dev |
| MariaDB / MySQL (Connector/C) | all | libmariadb-client-lgpl-dev-compat (or libmysqlclient-dev) |
| SQLite | all | libsqlite3-dev |
| mbed TLS | all | libmbedtls-dev |
| GTK+2 | Linux | libgtk2.0-dev |
On Windows, CMake will automatically download and build the libraries in the build folder during the build process. However, you need to install [Perl](http://www.activestate.com/activeperl) manually because OpenSSL needs it for configuration. On Mac/Linux, you should install the libraries manually to your system before building Neko, or use the `STATIC_DEPS` CMake option, which will be explained in [CMake options](#cmake-options).
### Building on Mac/Linux
```shell
# make a build directory, and change to it
mkdir build
cd build
# run cmake
cmake ..
# let's build, the outputs can be located in the "bin" directory
make
# install it if you want
# default installation prefix is /usr/local
make install
```
### Building on Windows
Below is the instructions of building Neko in a Visual Studio command prompt.
You may use the CMake GUI and Visual Studio to build it instead.
```shell
# make a build directory, and change to it
mkdir build
cd build
# run cmake specifying the visual studio version you need
# Visual Studio 12 2013, Visual Studio 14 2015, Visual Studio 15 2017
# you can additionally specify platform via -A switch (x86, x64)
cmake -G "Visual Studio 12 2013" ..
# let's build, the outputs can be located in the "bin" directory
msbuild ALL_BUILD.vcxproj /p:Configuration=Release
# install it if you want
# default installation location is C:\HaxeToolkit\neko
msbuild INSTALL.vcxproj /p:Configuration=Release
```
### CMake options
A number of options can be used to customize the build. They can be specified in the CMake GUI, or passed to `cmake` in command line as follows:
```shell
cmake "-Doption=value" ..
```
#### NDLLs
Settings that allow to exclude libraries and their dependencies from the build; available on all platforms. By default all are `ON`:
- `WITH_REGEXP` - Build Perl-compatible regex support
- `WITH_UI` - Build GTK-2 UI support
- `WITH_SSL` - Build SSL support
- `WITH_MYSQL` - Build MySQL support
- `WITH_SQLITE` - Build Sqlite support
- `WITH_APACHE` - Build Apache modules
#### `STATIC_DEPS`
Default value: `all` for Windows, `none` otherwise
It defines the dependencies that should be linked statically. Can be `all`, `none`, or a list of library names (e.g. `BoehmGC;Zlib;OpenSSL;MariaDBConnector;PCRE;Sqlite3;APR;APRutil;Apache;MbedTLS`).
CMake will automatically download and build the specified dependencies into the build folder. If a library is not present in this list, it should be installed manually, and it will be linked dynamically.
All third-party libraries, except GTK+2 (Linux), can be linked statically. We do not support statically linking GTK+2 due to the difficulty of building it and its own dependencies.
#### `RELOCATABLE`
Available on Mac/Linux. Default value: `ON`
Set RPATH to `$ORIGIN` (Linux) / `@executable_path` (Mac). It allows the resulting Neko VM executable to locate libraries (e.g. "libneko" and ndll files) in its local directory, such that the libraries need not be installed to "/usr/lib" or "/usr/local/lib".
#### `NEKO_JIT_DISABLE`
Default `OFF`.
Disable Neko JIT. By default, Neko JIT will be enabled for platforms it supports. Setting this to `ON` disable JIT for all platforms.
#### `NEKO_JIT_DEBUG`
Default `OFF`.
Debug Neko JIT.
#### `RUN_LDCONFIG`
Available on Linux. Default value: `ON`
Whether to run `ldconfig` automatically after `make install`. It is for refreshing the shared library cache such that "libneko" can be located correctly by the Neko VM.