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Software Architecture with C++, Second Edition

Software Architecture with C++: Designing Robust C++ Systems with Modern Architectural Practices, Second Edition, published by Packt

Chapter 18: Cloud Native Design

Prerequisites

Install the following software:

  • CMake 3.28
  • Conan 2
  • GCC 15, Clang 20, MSVC 19.50

The C++ compiler in your IDE and the Conan profile must be compatible to compile examples from the IDE.

Assuming you're on Linux or using WSL. The examples are developed on Linux, but their compilation and functionality are also tested on macOS and Windows.

Configure a local Conan profile and remotes by running:

rm -rf ./build/
conan profile detect --name ./build/conan_profile

Make sure that the profile section [settings] contains:

arch=x86_64
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=15
os=Linux

Building

To build the project, configure the Conan profile as described above, cd to its directory, and then run:

cd build
conan install .. --build=missing -s build_type=Release -pr:a=./conan_profile -of .
cmake .. -DCMAKE_BUILD_TYPE=Release # build type must match Conan's
cmake --build .

If GCC 15 is not your default compiler, you can tell CMake to use it with the CMAKE_CXX_COMPILER flag:

cd build
conan install .. --build=missing -s build_type=Release -pr:a=./conan_profile -of .
cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=`which g++-15` # build type must match Conan's
cmake --build .

To pass the settings directly without a Conan profile, use the command line option --settings:all or -s:a, and the keys arch, build_type, compiler, compiler.cppstd, compiler.libcxx, compiler.version, os:

rm -rf ./build/ && mkdir build && cd build
conan install .. --build=missing -s:a build_type=Release -s:a compiler=gcc -of .
cmake .. -DCMAKE_BUILD_TYPE=Release # build type must match Conan's
cmake --build .

To apply Conan dependency as a CMake Dependency Provider, clone this Git repository and then run the next command:

rm -rf ./build/cmake-conan
git clone https://github.com/conan-io/cmake-conan.git build/cmake-conan
cmake -S . -B build -DCMAKE_PROJECT_TOP_LEVEL_INCLUDES=./build/cmake-conan/conan_provider.cmake -DCMAKE_BUILD_TYPE=Release
cmake --build build

Docker

In the build directory, run cmake --build . --target docker to build the Docker image. Follow the instructions to run the app in either Docker or Kubernetes.

Read instructions regarding Development Containers in the file containers/docker/README.md in Chapter 17 to build an executable file for Linux on macOS and Windows.

Troubleshooting

Windows Firewall can block connections to the IP address 0.0.0.0 therefore set 127.0.0.1 in customer/src/customer/main.cpp as a workaround or allow connections to that address on the host.