AWS GameKit C++ SDK

Prerequisites

Download and Install CMake v3.21 Some versions of aws-sdk-cpp have a known issue compiling with CMake 3.22 or later.

Enable Windows long path support

For the build steps of the dependencies and the SDK to work properly on Windows, you will have to enable long path support.

Run the following command in an Administrator level Powershell terminal:

Set-ItemProperty `
  -Path HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem `
  -Name LongPathsEnabled -Value 1

Dependencies

Install the dependencies in the following order:

1. AWS SDK C++
2. yaml-cpp
3. GTest
4. Boost
5. Pybind

Third party Tools for iOS Builds

iOS Toolchain file: Get the toolchain file from https://github.com/leetal/ios-cmake.

cURL, OpenSSL, nghttp: Get the script that will build cURL, OpenSSL, and nghttp for iOS from: https://github.com/jasonacox/Build-OpenSSL-cURL

• Needs Xcode 13.1 or above
  • If multiple Xcode versions are installed, run: sudo xcode-select -s <YOUR_XCODE13_APP>/Contents/Developer example: sudo xcode-select -s /Applications/Xcode13.app/Contents/Developer
• Run: ./build.sh
  • If needed the ‘-e’ flag can be used to compile with OpenSSL engine support although this may cause some ‘undefined symbols for architecture’ depending on your OS version.

Boost: Get the shell script that will download, bootstrap, and build Boost for iOS from: https://github.com/faithfracture/Apple-Boost-BuildScript/blob/master/boost.sh.

• The variables in boost.sh should be replaced with the following to avoid building unecessary libraries
  • BOOST_LIBS=(“regex” “filesystem” “iostreams”)
  • ALL_BOOST_LIBS_1_68=(“regex” “filesystem” “iostreams”)
  • ALL_BOOST_LIBS_1_69=(“regex” “filesystem” “iostreams”)

Third party Tools for Android Builds (On Windows)

Ninja: Available as part of Visual Studio 2019

Developer Command Prompt for VS 2019: Available as part of Visual Studio 2019. Note: all Android build commands should be executed from this console. Usually located at "C:\Program Files (x86)\Microsoft Visual Studio019\Professional\Common7\Tools\VsDevCmd.bat"

• For Ninja build tool, you may need to use the dev command prompt from VS Build Tools instead of VS Community edition, if you do not have VS Professional installed. This is especially important when using an EC2 instance instead of your local machine.
• You can launch the dev cmd prompt using the LaunchDevCmd.bat in the above path.

Android NDK r21d for Unreal: Use Unreal’s NDK, follow these steps to install: https://docs.unrealengine.com/4.27/en-US/SharingAndReleasing/Mobile/Android/Setup/AndroidStudio/

Android NDK with Unity: (API Level 24, NDK version 21), you can use the NDK supplied by Unity. To do this, set the following (replace with the Unity version you are using):

set ndkroot=C:\Program Files\Unity\Hub\Editor\<UNITY VERSION>\Editor\Data\PlaybackEngines\AndroidPlayer\NDK

Android Studio Version 4: Follow these steps to install: https://docs.unrealengine.com/4.27/en-US/SharingAndReleasing/Mobile/Android/Setup/AndroidStudio/

After following the steps to install Android Studio 4.0 and downloaded the NDK using Unreal´s script, open Android Studio again and make the following modifications:

• Install Android SDK Build Tools 30.0.3 in Configure > Appeareance and Behavior > System Settings > Android SDK > SDK Tools. You might need to uncheck “Hide obsolete packages”
  • This may also be accessed from the startup screen: Configure → SDK Manager → SDK Tools
  • You may need to check Show Package Details to see all the versions of the Android SDK Build Tools
• Uninstall newer versions of the SDK Build Tools

AWS SDK C++

Build and Install AWS SDK C++

Note: BUILD_TYPE is either Debug or Release Note: Make sure your development path is absolute, not relative, the install might silently fail otherwise.

Windows

1. Clone the AWS SDK C++: git clone --recurse-submodules https://github.com/aws/aws-sdk-cpp (make sure you’re on tag 1.9.162 or later)

2. Install CMake 3.21: https://github.com/Kitware/CMake/releases/tag/v3.21.6

3. Use the Windows Command Prompt (or the Legacy command prompt in Windows Terminal) for the following:

4. Create a build directory called AWSSDK in a separate directory than where you cloned the SDK.

   mkdir AWSSDK

5. Change directory into AWSSDK:

   cd AWSSDK

6. Generate the SDK Project files (~5 min):

   cmake <YOUR_DEVELOPMENT_PATH>\aws-sdk-cpp -G "Visual Studio 16 2019" -DCMAKE_BUILD_TYPE=<BUILD_TYPE> -DFORCE_SHARED_CRT=ON -DBUILD_SHARED_LIBS=ON -DMINIMIZE_SIZE=ON -DCMAKE_INSTALL_PREFIX=<YOUR_DEVELOPMENT_PATH>\AWSSDK\install\x86_64\windows\<BUILD_TYPE>

7. Build the SDK (~10 min depends on your workstation specs):

   "C:\Program Files (x86)\Microsoft Visual Studio019\Professional\MSBuild\Current\Bin\msbuild.exe" ALL_BUILD.vcxproj /p:Configuration=<BUILD_TYPE> -maxcpucount

8. Install the SDK to the \AWSSDK\install location

   "C:\Program Files (x86)\Microsoft Visual Studio019\Professional\MSBuild\Current\Bin\msbuild.exe" INSTALL.vcxproj /p:Configuration=<BUILD_TYPE> -maxcpucount

macOS

1. Clone the AWS SDK C++: git clone --recurse-submodules https://github.com/aws/aws-sdk-cpp inside ~/<YOUR_DEVELOPMENT_PATH> (make sure you’re on tag 1.9.188 for macOS)
   1. Make sure to use the same tag for aws-sdk-cpp for all builds (macOS and iOS)
2. Install CMake: https://cmake.org/download/
3. For both macOS and iOS, you will need to pull in the tag v0.17.13 for crt/aws-crt-cpp submodule of aws-sdk-cpp. This fixes a bug for iOS builds related to SetKeychainPath. Make sure to init and recursive update further submodules of aws-crt-cpp.

For macOS SHARED LIBRARIES

3. Create a build directory called AWSSDK_mac e.g., ~/development/AWSSDK_mac

   mkdir AWSSDK_mac

4. Change directory into AWSSDK_mac:

   cd AWSSDK_mac

5. Run CMake

   rm -rf CMakeFiles/; rm -rf CMakeScripts/; rm CMakeCache.txt; rm -rf crt/aws-crt-cpp/CMakeFiles/; rm -rf crt/aws-crt-cpp/CMakeScripts/;
   
   cmake ~/development/aws-sdk-cpp -G Xcode -DCMAKE_BUILD_TYPE=<BUILD_TYPE> -DBUILD_ONLY="core;apigateway;cloudformation;cognito-idp;lambda;s3;ssm;secretsmanager;sts" -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=<YOUR_DEVELOPMENT_PATH>/AWSSDK_mac/install/x86_64/macos/<BUILD_TYPE> -DTARGET_ARCH="APPLE" -DCMAKE_OSX_DEPLOYMENT_TARGET=10.15

6. Build and install

   xcodebuild -parallelizeTargets -configuration <BUILD_TYPE> -target ALL_BUILD
   xcodebuild -parallelizeTargets -target install

For iOS Static Libraries

3. Create a build directory called AWSSDK_ios e.g., ~/development/AWSSDK_ios

   mkdir AWSSDK_ios

4. Change directory into AWSSDK_ios:

   cd AWSSDK_ios

5. Run CMake Use XCode 12 to compile for iOS 14.0 which is the highest version supported by Unreal 4.27.

   • If multiple Xcode versions are installed,

   Run: sudo xcode-select -s <YOUR_XCODE12_APP>/Contents/Developer Example: sudo xcode-select -s /Applications/Xcode12.app/Contents/Developer

   cmake ~/development/aws-sdk-cpp -G Xcode -DCMAKE_TOOLCHAIN_FILE=<YOUR_DEVELOPMENT_PATH>/ios-cmake/ios.toolchain.cmake -DPLATFORM=OS64 -DCMAKE_BUILD_TYPE=<BUILD_TYPE> -DBUILD_ONLY="core;apigateway;cloudformation;cognito-idp;lambda;s3;ssm;secretsmanager;sts" -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=<YOUR_DEVELOPMENT_PATH>/AWSSDK_ios/install/arm64/ios/<BUILD_TYPE> -DENABLE_TESTING=NO -DCURL_LIBRARY=<YOUR_DEVELOPMENT_PATH>/Build-OpenSSL-cURL/curl/lib/libcurl.a -DCURL_INCLUDE_DIR=<YOUR_DEVELOPMENT_PATH>/Build-OpenSSL-cURL/curl/include -DUSE_OPENSSL=ON -DENABLE_PROXY_INTEGRATION_TESTS=OFF -DENABLE_COMMONCRYPTO_ENCRYPTION=OFF -DENABLE_OPENSSL_ENCRYPTION=ON -DOPENSSL_ROOT_DIR=<YOUR_DEVELOPMENT_PATH>/Build-OpenSSL-cURL/openssl/iOS -DCMAKE_CXX_FLAGS="-Wno-shorten-64-to-32" -DENABLE_CURL_CLIENT=ON -DENABLE_CURL_LOGGING=OFF

6. Build and install

xcodebuild -parallelizeTargets -configuration <BUILD_TYPE> -target ALL_BUILD
xcodebuild -parallelizeTargets -target install

For Android Libraries

1. Set these environment variables inside a Developer Command Prompt for VS 2019.

   set ANDROID_API_LEVEL=24
   set BUILD_TYPE=Debug
   set ARCH=arm
   set PLATFORM=android
   set ANDROID_ABI=armeabi-v7a

• For Unreal, set:

  set BUILD_SHARED=OFF
  set STL_TYPE=c++_static

• For Unity, set:

  set BUILD_SHARED=ON
  set STL_TYPE=c++_shared 

2. Create a build directory called AWSSDK_android

   mkdir AWSSDK_android

3. Change directory into AWSSDK_android:

   cd AWSSDK_android

4. Run CMake

   cmake <YOUR_DEVELOPMENT_PATH>\aws-sdk-cpp -DNDK_DIR=%NDKROOT% -DBUILD_ONLY="core;apigateway;cloudformation;cognito-idp;lambda;s3;ssm;secretsmanager;sts" -DBUILD_SHARED_LIBS=%BUILD_SHARED% -DCMAKE_BUILD_TYPE=%BUILD_TYPE% -DCUSTOM_MEMORY_MANAGEMENT=ON -DTARGET_ARCH=ANDROID -DANDROID_ABI=%ANDROID_ABI% -DANDROID_NATIVE_API_LEVEL=%ANDROID_API_LEVEL% -DANDROID_BUILD_CURL=1 -DANDROID_BUILD_OPENSSL=1 -DANDROID_BUILD_ZLIB=1 -DBUILD_ZLIB=1 -DCMAKE_INSTALL_PREFIX=<YOUR_DEVELOPMENT_PATH>\AWSSDK_android\install\%ARCH%\%PLATFORM%\%BUILD_TYPE% -G "Ninja" -DANDROID_STL=%STL_TYPE% -DANDROID_PLATFORM=android-%ANDROID_API_LEVEL% -DENABLE_TESTING=NO

5. Build and install

   cmake --build .
   cmake --build . --target install

6. Before building Release after you have built Debug, make sure to delete all CMakeCache files and also the folder external-build in AWSSDK_android root path.

yaml-cpp

AWS GameKit uses a fixed version of yaml-cpp: commit 2f899756

Windows Build and Install

1. git clone https://github.com/jbeder/yaml-cpp/
2. cd yaml-cpp
3. git checkout -b gamekit_fixed_version 2f899756
4. mkdir build
5. cd build
6. cmake -DYAML_BUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=<DIRECTORY_IN_STEP_TWO>\install\<BUILD_TYPE> ..
7. "C:\Program Files (x86)\Microsoft Visual Studio019\Professional\MSBuild\Current\Bin\msbuild.exe" INSTALL.vcxproj /p:Configuration=<BUILD_TYPE> -maxcpucount

macOS Build and Install

1. git clone https://github.com/jbeder/yaml-cpp/
2. cd yaml-cpp
3. git checkout -b gamekit_fixed_version 2f899756
4. mkdir build_mac
5. cd build_mac
6. cmake -G Xcode -DYAML_BUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=install/x86_64/<BUILD_TYPE> ..
7. xcodebuild -parallelizeTargets -configuration <BUILD_TYPE> -target ALL_BUILD
8. xcodebuild -parallelizeTargets -target install

iOS Build and Install

1. git clone https://github.com/jbeder/yaml-cpp/ (if not already cloned for macos)
2. cd yaml-cpp
3. git checkout -b gamekit_fixed_version 2f899756
4. mkdir build_ios (same level as macos)
5. cd build_ios
6. cmake -G Xcode -DCMAKE_TOOLCHAIN_FILE=<YOUR_DEVELOPMENT_PATH>/ios-cmake/ios.toolchain.cmake -DPLATFORM=OS64 -DCMAKE_BUILD_TYPE=<BUILD_TYPE> -DCMAKE_INSTALL_PREFIX=install/arm64/<BUILD_TYPE> ..
7. xcodebuild -parallelizeTargets -configuration <BUILD_TYPE> -target ALL_BUILD
8. xcodebuild -parallelizeTargets -target install

Android Build and Install

1. Set these environment variables inside a Developer Command Prompt for VS 2019.

   set ANDROID_API_LEVEL=24
   set BUILD_TYPE=Debug
   set ARCH=arm
   set PLATFORM=android
   set ANDROID_ABI=armeabi-v7a

• For Unreal, set:

  set BUILD_SHARED=OFF
  set STL_TYPE=c++_static

• For Unity, set:

  set BUILD_SHARED=ON
  set STL_TYPE=c++_shared 

1. git clone https://github.com/jbeder/yaml-cpp/

2. cd yaml-cpp

3. git checkout -b gamekit_fixed_version 2f899756

4. mkdir build_android

5. cd build_android

   cmake .. -DCMAKE_TOOLCHAIN_FILE=%NDKROOT%\build\cmake\android.toolchain.cmake -DYAML_BUILD_SHARED_LIBS=%BUILD_SHARED% -DANDROID_ABI=%ANDROID_ABI% -DANDROID_NATIVE_API_LEVEL=%ANDROID_API_LEVEL% -DCMAKE_INSTALL_PREFIX=install\%BUILD_TYPE% -G "Ninja" -DANDROID_STL=%STL_TYPE% -DBUILD_TESTING=OFF
   cmake --build .
   cmake --build . --target install

GTest

Windows Build and Install

1. Create a directory to contain the Google test repo (example: D:\development), navigate into it and clone: git clone https://github.com/google/googletest. You should end up having a directory tree like D:\development\googletest.
2. Navigate into the googletest directory inside newly cloned googletest repo, your cwd should look like D:\development\googletest\googletest.
3. Run CMake to generate the configuration files: cmake -DBUILD_SHARED_LIBS=ON -Dgtest_force_shared_crt=ON -DCMAKE_INSTALL_PREFIX=<path to gtest repo>\build\install -DGTEST_CREATE_SHARED_LIBRARY=1 ..
4. Build with "C:\Program Files (x86)\Microsoft Visual Studio019\Professional\MSBuild\Current\Bin\msbuild.exe" INSTALL.vcxproj /p:Configuration=Debug -maxcpucount

macOS Build and Install

1. Clone https://github.com/google/googletest
2. cd into the directory where you cloned googletest
3. mkdir build_mac
4. cd build_mac
5. cmake -G Xcode -DBUILD_SHARED_LIBS=ON -Dgtest_force_shared_crt=ON -DCMAKE_INSTALL_PREFIX=install/x86_64 -DGTEST_CREATE_SHARED_LIBRARY=1 ..
6. xcodebuild -parallelizeTargets -target ALL_BUILD
7. xcodebuild -parallelizeTargets -target install

iOS Build and Install

1. Not needed.

Android Build and Install

1. Set these environment variables inside a Developer Command Prompt for VS 2019.

   set ANDROID_API_LEVEL=24
   set BUILD_TYPE=Debug
   set ARCH=arm
   set PLATFORM=android
   set ANDROID_ABI=armeabi-v7a

• For Unreal, set:

  set STL_TYPE=c++_static

• For Unity, set:

  set STL_TYPE=c++_shared 

1. Clone https://github.com/google/googletest

2. cd into the directory where you cloned googletest

3. mkdir build_android

4. cd build_android

   cmake .. -DBUILD_SHARED_LIBS=ON -Dgtest_force_shared_crt=ON -DCMAKE_INSTALL_PREFIX=install\%BUILD_TYPE% -DGTEST_CREATE_SHARED_LIBRARY=1 -DCMAKE_TOOLCHAIN_FILE=%NDKROOT%\build\cmake\android.toolchain.cmake -DANDROID_ABI=%ANDROID_ABI% -DANDROID_NATIVE_API_LEVEL=%ANDROID_API_LEVEL% -G "Ninja" -DANDROID_STL=%STL_TYPE%
   cmake --build .
   cmake --build . --target install

Boost

Windows Build and Install

1. Download and extract https://www.boost.org/users/history/version_1_76_0.html
2. cd into the directory you extracted Boost
3. Run bootstrap.bat
4. Run .\b2 link=static

macOS Build and Install

1. Download and extract https://www.boost.org/users/history/version_1_76_0.html
2. cd into the directory you extracted Boost
3. Run ./bootstrap.sh
4. Run ./b2 link=static

iOS Build and Install

1. Make the following updates to the script from https://gist.github.com/faithfracture/c629ae4c7168216a9856#file-boost-sh :
   1. Make sure it’s in a separate folder from the boost folder for win64 and macos, for example: ~/development/ios-boost.
   2. May need to give r+w permissions to all files in this folder with chmod.
   3. Update boost version in to 1.76.0 (or whichever one we are currently using for win64 and macos).
   4. Change BOOST_LIBS to BOOST_LIBS="regex filesystem iostreams"
2. Run the script using ./boost.sh -ios.
3. Note: You can continue to use the other boost folder (ex: <BOOST_PARENT_DIR>\boost_1_76_0) when asked for the boost path in the scripts/aws_gamekit_cpp_build.py build script since the build needs boost source/includes. Use the ios-boost directory when prompted for the boost path in the scripts/refresh_plugin.py script that copies ios static libs.

Android Build and Install

1. Set these environment variables inside a Developer Command Prompt for VS 2019.

   set ANDROID_API_LEVEL=24
   set BUILD_TYPE=Debug
   set ARCH=arm
   set PLATFORM=android
   set CLANGPATH=%NDKROOT%\toolchains\llvm\prebuilt\windows-x86_64\bin
   set PATH=%PATH%;%CLANGPATH%

   • For Unreal, set:

     set STL_TYPE=c++_static

   • For Unity, set:

     set STL_TYPE=c++_shared 

2. Copy the scripts\Android\sample-android-user-config.jam to your User directory with the name user-config.jam e.g. C:\users\<your username>\user-config.jam.

   Note: Remember to remove or rename this file after building Boost for Android, otherwise all future Boost builds will use this configuration.

3. Download and extract https://www.boost.org/users/history/version_1_76_0.html. Make sure it’s in a separate folder from the boost folder for win64 and macos, for example: ~/development/android-boost.

4. cd into the directory you extracted Boost

5. Run bootstrap.bat --with-libraries=regex,filesystem,iostreams

6. Build boost:

• For Unreal, run

  .\b2 toolset=clang-armeabiv7a target-os=android architecture=arm --without-python threading=multi link=static --layout=tagged variant=debug,release

• For Unity:
  Open boostcpp.jam in your boost dir and add android to the platforms on line 210, so it ends up as

  ! [ $(property-set).get <target-os> ] in windows cygwin darwin aix android &&

  Then, run in the Command Prompt

  .\b2 toolset=clang-armeabiv7a target-os=android architecture=arm --without-python link=shared --layout=system variant=debug,release stage

pybind11

Windows Build and Install

• Make sure python3 is on your PATH

1. Clone https://github.com/pybind/pybind11/
2. cd into the directory where you cloned pybind11
3. cmake -DBoost_INCLUDE_DIR=<BOOST_PARENT_DIR>\boost_1_76_0 -DCMAKE_INSTALL_PREFIX=<PYBIND_PARENT_DIR>\pybind11\install\<BUILD_TYPE> .
4. "C:\Program Files (x86)\Microsoft Visual Studio019\Professional\MSBuild\Current\Bin\msbuild.exe" INSTALL.vcxproj /p:Configuration=<BUILD_TYPE> -maxcpucount

macOS Build and Install

1. Clone https://github.com/pybind/pybind11/
2. cd into the directory where you cloned pybind11
3. cmake -DBOOST_ROOT=<BOOST_PARENT_DIR>/boost_1_76_0 .
4. make
5. sudo make install

iOS Build and Install

Not supported.

Android Build and Install

Not supported.

Build GameKit C++

Use the scripts/aws_gamekit_cpp_build.py utility to generate project files and compile for the specified platform.

• Usage: python scripts/aws_gamekit_cpp_build.py <Platform> <Platform specific arguments> <BUILD_TYPE>
• Example: python scripts/aws_gamekit_cpp_build.py Windows --test Debug
• Use --help to see all arguments and directions. If used after supplying a platform it will list and explain platform sepecific arguments.

• For Android support in Unity, call the command as follows (replacing with Release or Debug):

  python scripts/aws_gamekit_cpp_build.py  Android --shared <BUILD_TYPE>

The script will first search your environment variables for dependency path variables. If they are not present there, it will search in the .env file at the root of this repository (created by running this script), else it will prompt you for input on where the dependencies are located and save those locations in the .env file.

Run Unit Tests

Windows

1. cd into tests\<BUILD_TYPE> directory
2. Run aws-gamekit-cpp-tests.exe

macOS

1. cd into the tests/Debug directory
2. Run ./aws-gamekit-cpp-tests

Update Plugin with new binaries and headers

Use the scripts/refresh_plugin.py script to update your game engine plugin with the new libraries and header files.

• Usage: python scripts/refresh_plugin.py --platform <target_platform> <BuildType> <GameEngine> <game engine specific arguments>
• Example: python scripts/refresh_plugin.py --platform Windows Debug Unreal --unreal_plugin_path D:\development\MyUnrealGame\Plugins\AwsGameKit
• Example: python scripts/refresh_plugin.py --platform Windows Debug Unity --unity_plugin_path D:\development\MyUnityGame\Packages\com.amazonaws.gamekit
• Use --help with the script to see argument options, and using --help after supplying a GameEngine argument, it will list and explain game engine specific arguments.
• If refreshing MacOS or iOS binaries you will have to codesign them to distribute them to other developers, supply the --certificate_name argument and give a Developer ID Application certificate common name.