# Building SRT on Linux

Install `cmake` and `openssl-devel` (or equivalent) packages. For `pthreads`, add
the `-lpthreads` linker flag.

Default installation path prefix of `make install` is `/usr/local`.

To define a different installation path prefix, use the `--prefix` option with `configure`
or the [`-DCMAKE_INSTALL_PREFIX`](https://cmake.org/cmake/help/v3.0/variable/CMAKE_INSTALL_PREFIX.html) CMake option.

To uninstall, call `make -n install` to list all the dependencies, and then pass the list to `rm`.

Here is a link to a demo showing how CMake can be used to build SRT:
[Quickstart: Running SRT and FFmpeg on Ubuntu](https://www.youtube.com/watch?v=XOtUOVhussc&t=5s).

## Ubuntu 14

```shell
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install tclsh pkg-config cmake libssl-dev build-essential
./configure
make
```

## CentOS 7

```shell
sudo yum update
sudo yum install tcl pkgconfig openssl-devel cmake gcc gcc-c++ make automake
./configure
make
```

## CentOS 6

```shell
sudo yum update
sudo yum install tcl pkgconfig openssl-devel cmake gcc gcc-c++ make automake
sudo yum install centos-release-scl-rh devtoolset-3-gcc devtoolset-3-gcc-c++
scl enable devtoolset-3 bash
./configure --use-static-libstdc++ --with-compiler-prefix=/opt/rh/devtoolset-3/root/usr/bin/
make
```