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Overview

This file contains instructions for installing dependencies on different platforms. If you have all the prerequisites specified in the README file, you could simply skip following instructions.

Common Issues

  • Known Issues
    • If you run into error like "Unknown extension ".c" for file /XXX/CheckIncludeFiles.c try_compile() works only for enabled languages. Currently these are: CXX, you need to change project(aws-iot-sdk-cpp CXX) to project(aws-iot-sdk-cpp C CXX) and add ENABLE_LANGUAGE(C) below it.

Raspberry Pi

  • Make sure to have CMake installed CMake Installation
  • There is a reference for installing gcc-6 and g++-6 on raspberry pi. It also works for gcc-5/g++5 by replacing version number to 5. GCC-6 Installation
  • You could create symlinks to choose which version of gcc/g++ to use update-alternatives. Assuming both gcc-5 and gcc-6 installed, the following commands will maintain symbolic links of both versions. In this case, gcc-5/g++-5 has higher priority (20) than gcc-6/g++-6 (10), which means the alternatives will point to gcc-5/g++-5 in automatic mode. You could change the priority based on your needs. sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 20 sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 10 sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-5 20 sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 10

sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30 sudo update-alternatives --set cc /usr/bin/gcc

sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30 sudo update-alternatives --set c++ /usr/bin/g++

sudo update-alternatives --config gcc sudo update-alternatives --config g++

  • Install Openssl 1.0.2. Linux From Scratch has good guides on installing versions of OpenSSL from source.
  • Build libssl-dev 1.0.2 or above.
    • Download libssl-dev_1.0.2 libssl-dev_1.0.2
    • run sudo dpkg -i libssl-dev_1.0.2j-1_armhf.deb

Mac OS

  • Install Homebrew if it's not installed $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
  • Install CMake
    • You can build from source CMake Installation or
    • Install directly using brew install cmake
    • If you use the .dmg installer, the following instructions are used to add the CMake path into $PATH after installation:
      • sudo vim /etc/paths
      • Add the following line to the paths already present /Applications/CMake.app/Contents/bin
      • save and quit
      • In a new terminal window, run echo $PATH. The path for CMake should be displayed, along with the other paths.
  • With Mac OS, the default version of OpenSSL is not 1.0.2 and cannot be used with the SDK. Instead, version 1.0.2 needs to be installed. To install OpenSSL 1.0.2:
    • Update brew brew update && brew upgrade
    • Run brew info openssl to list the versions of openssl available Example output: openssl: stable 1.0.2l (bottled) [keg-only] SSL/TLS cryptography library https://openssl.org/ /usr/local/Cellar/openssl/1.0.2k (1,696 files, 12MB) Poured from bottle on 2017-02-03 at 14:20:40 /usr/local/Cellar/openssl/1.0.2l (1,709 files, 12.1MB) Poured from bottle on 2017-05-31 at 15:32:30 Use the latest stable 1.0.2 version available, which is 1.0.2l here
    • Run brew switch openssl <latest stable 1.0.2 version>. If the version is already installed, the path for this version of OpenSSL will be displayed. Example output: Cleaning /usr/local/Cellar/openssl/1.0.2l Opt link created for /usr/local/Cellar/openssl/1.0.2l Use the path (/usr/local/Cellar/openssl/1.0.2l in the example above) in your <BASE_SDK_DIRECTORY>/network/CMakeLists.txt
    • If not installed, run brew install openssl --force after the switch operation. The path will be displayed at the end of the installation.

After that follow the below steps.

  • Open <BASE_SDK_DIRECTORY>/network/CMakelists.txt.in

  • Comment out the below line in default OpenSSL section by adding # in front of it

    #find_package(OpenSSL REQUIRED)

  • Add following two lines below the line commented out in default OpenSSL section. Replace "YOUR_OPENSSL_PATH" with the path obtained from the brew switch or brew install command

    set(OPENSSL_LIBRARIES "YOUR_OPENSSL_PATH/lib/libssl.a;YOUR_OPENSSL_PATH/lib/libcrypto.a") set(OPENSSL_INCLUDE_DIR "YOUR_OPENSSL_PATH/include")

Windows

  • Both the Websocket and OpenSSL builds work on windows. OpenSSL 1.0.2 needs to be installed for them to work properly.

  • Download and install OpenSSL from this link

  • Download and install CMake for Windows from this link

  • Download and install git from this link. Please be sure to install git bash as well.

  • Open the Git Bash terminal and navigate to the folder where you want the SDK to be downloaded.

  • Clone the repository in this folder. Once finished, change directory to the downloaded repo.

  • Create a build folder. Change directory to the build folder.

  • Run the following command:

    <absolute path to cmake install directory>/bin/cmake -G "Visual Studio 14 2015 Win64" ../.

  • The above command will generate a Visual studio solution file called aws-iot-sdk-cpp. Open this file in VS2015.

  • The list of available targets will show up in the solution explorer.

  • Before running available targets, be sure to change the working directory of the project to Output directory.

  • There are known issues with the Windows Build currently. Please check the Known Issues file for more information.

Ubuntu 14.04

  • Install CMake CMake Installation

  • To update to OpenSSL 1.0.2

    • sudo apt-get install make (if not already installed)
    • wget https://www.openssl.org/source/openssl-1.0.2g.tar.gz
    • tar -xzvf openssl-1.0.2g.tar.gz
    • cd openssl-1.0.2g
    • sudo ./config
    • sudo make install
    • sudo ln -sf /usr/local/ssl/bin/openssl <which openssl>
    • openssl version -v (should show correct version of OpenSSL)

  • To install libssl-dev

    • Add the following PPA sources into /etc/apt/sources.list (Warning: This may break your setup) :

      deb [arch=i386,amd64] http://archive.ubuntu.com/ubuntu xenial main restricted universe multiverse deb [arch=i386,amd64] http://security.ubuntu.com/ubuntu xenial-security main restricted universe multiverse deb [arch=i386,amd64] http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse deb [arch=arm64,armhf,powerpc] http://ports.ubuntu.com/ xenial main restricted universe multiverse deb [arch=arm64,armhf,powerpc] http://ports.ubuntu.com/ xenial-security main restricted universe multiverse deb [arch=arm64,armhf,powerpc] http://ports.ubuntu.com/ xenial-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu xenial main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu xenial-backports main restricted universe multiverse deb-src http://ports.ubuntu.com/ xenial main restricted universe multiverse deb-src http://ports.ubuntu.com/ xenial-security main restricted universe multiverse deb-src http://ports.ubuntu.com/ xenial-backports main restricted universe multiverse

    • sudo apt-get update

    • sudo dpkg --configure -a --force-all (to fix broken libraries)

    • sudo apt-get -f install (to fix broken libraries)

    • sudo apt-get install libssl-dev

    • Delete the above additions from /etc/apt/sources.list (to remove the xenial backports from the sources list)

    • sudo apt-get update