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### Verifying releases

Git tags are signed with the developer's key, they can be verified as follows:

```bash
$ git verify-tag v1.6.1
```

Starting with libuv 1.7.0, the tarballs stored in the
[downloads site](http://dist.libuv.org/dist/) are signed and an accompanying
signature file sit alongside each. Once both the release tarball and the
signature file are downloaded, the file can be verified as follows:

```bash
$ gpg --verify libuv-1.7.0.tar.gz.sign
```

## Build Instructions

For GCC there are two build methods: via autotools or via [GYP][].
GYP is a meta-build system which can generate MSVS, Makefile, and XCode
backends. It is best used for integration into other projects.

To build with autotools:

```bash
$ sh autogen.sh
$ ./configure
$ make
$ make check
$ make install
```

To build with [CMake](https://cmake.org/):

```bash
$ mkdir -p out/cmake ; cd out/cmake ; cmake -DBUILD_TESTING=ON ../..
$ make all test
# Or manually:
$ ./uv_run_tests    # shared library build
$ ./uv_run_tests_a  # static library build
```

To build with GYP, first run:

```bash
$ git clone https://chromium.googlesource.com/external/gyp build/gyp
```

### Windows

Prerequisites:

* [Python 2.6 or 2.7][] as it is required
  by [GYP][].
  If python is not in your path, set the environment variable `PYTHON` to its
  location. For example: `set PYTHON=C:\Python27\python.exe`
* One of:
  * [Visual C++ Build Tools][]
  * [Visual Studio 2015 Update 3][], all editions
    including the Community edition (remember to select
    "Common Tools for Visual C++ 2015" feature during installation).
  * [Visual Studio 2017][], any edition (including the Build Tools SKU).
    **Required Components:** "MSbuild", "VC++ 2017 v141 toolset" and one of the
    Windows SDKs (10 or 8.1).
* Basic Unix tools required for some tests,
  [Git for Windows][] includes Git Bash
  and tools which can be included in the global `PATH`.

To build, launch a git shell (e.g. Cmd or PowerShell), run `vcbuild.bat`
(to build with VS2017 you need to explicitly add a `vs2017` argument),
which will checkout the GYP code into `build/gyp`, generate `uv.sln`
as well as the necesery related project files, and start building.

```console
> vcbuild
```

Or:

```console
> vcbuild vs2017
```

To run the tests:

```console
> vcbuild test
```

To see all the options that could passed to `vcbuild`:

```console
> vcbuild help
vcbuild.bat [debug/release] [test/bench] [clean] [noprojgen] [nobuild] [vs2017] [x86/x64] [static/shared]
Examples:
  vcbuild.bat              : builds debug build
  vcbuild.bat test         : builds debug build and runs tests
  vcbuild.bat release bench: builds release build and runs benchmarks
```


### Unix

For Debug builds (recommended) run:

```bash
$ ./gyp_uv.py -f make
$ make -C out
```

For Release builds run:

```bash
$ ./gyp_uv.py -f make
$ BUILDTYPE=Release make -C out
```

Run `./gyp_uv.py -f make -Dtarget_arch=x32` to build [x32][] binaries.

### OS X

Run: