conan-docker-tools

Dockerfiles for different gcc compiler versions. You can use these images directly in your project or with the conan-package-tools project.

The images are uploaded to Dockerhub:

GCC

Version	Arch	Status, Life cycle
lasote/conangcc46: gcc 4.6	x86_64	Supported
lasote/conangcc46: gcc 4.6	x86_64	Supported
lasote/conangcc48: gcc 4.8	x86_64	Supported
lasote/conangcc49: gcc 4.9	x86_64	Supported
lasote/conangcc49-i386: gcc 4.9	x86	Supported
lasote/conangcc52: gcc 5.2	x86_64	Supported
lasote/conangcc53: gcc 5.3	x86_64	Supported
lasote/conangcc54: gcc 5.4	x86_64	Supported
lasote/conangcc62: gcc 6.2	x86_64	DEPRECATED, only frozen binary image support, No Dockerfile
lasote/conangcc63: gcc 6.3	x86_64	Supported
lasote/conangcc64: gcc 6.4	x86_64	Supported
lasote/conangcc71: gcc 7.1	x86_64	DEPRECATED, only frozen binary image support, No Dockerfile
lasote/conangcc72: gcc 7.2	x86_64	Supported

GCC>=5 is ABI compatible for minor versions. To solve multiple minors, there are generic images by major version. If you are interested to understand the motivation, read this issue.

Version	Arch	Status, Life cycle
lasote/conangcc5-i386: gcc 5	x86	Supported
lasote/conangcc5: gcc 5	x86_64	Supported
lasote/conangcc6-i386: gcc 6	x86	Supported
lasote/conangcc6: gcc 6	x86_64	Supported
lasote/conangcc7-i386: gcc 7	x86	Supported
lasote/conangcc7: gcc 7	x86_64	Supported

Clang

Version	Arch	Status, Life cycle
- lasote/conanclang38: clang 3.8	x86_64	Supported
- lasote/conanclang39-i386: clang 3.9	x86	Supported
- lasote/conanclang39: clang 3.9	x86_64	Supported
- lasote/conanclang40-i386: clang 4.0	x86	Supported
- lasote/conanclang40: clang 4.0	x86_64	Supported
- lasote/conanclang50-i386: clang 5.0	x86	Supported
- lasote/conanclang50: clang 5.0	x86_64	Supported

Use the images to test your c++ project in travis-ci

These Docker images can be used to build your project using the travis-ci CI service, even if you are not using Conan. It's always recommended to build and test your C/C++ projects in a Docker image running in travis:

• Travis CI images are old, so installing a newer version of gcc and the needed tools can be hard. Check this thread.
• The generated binaries will use the old libc/libstdc++ installed in the system, so ABI incompatibilities can occur if you use these packages in more modern distributions.

To setup your project, copy the contents of the folder example_project_test to your project. You need to modify:

• .travis.yml file to enable or disable more GCC or CLang versions add more entries to the matrix using DOCKER_IMAGE
• .travis/run_project_build.sh With the lines that you need to build or test your project

.travis.yml

    os: linux
    services:
       - docker
    sudo: required
    language: python
    env:
      matrix:
        - DOCKER_IMAGE=lasote/conangcc63 # 6.3
        - DOCKER_IMAGE=lasote/conanclang39 # 3.9

    matrix:
       include:
           - os: osx
             osx_image: xcode8.2 # apple-clang 8.0
             language: generic
             env:

    before_install:
      - ./.travis/before_install.sh

    install:
      - ./.travis/install.sh

    script:
      - ./.travis/run.sh

.travis/run_project_build.sh. Change it according your project build needed commands:

    #!/bin/bash

    rm -rf build && mkdir -p build && cd build
    conan install ../ --build=missing
    cmake -G Ninja -DCMAKE_BUILD_TYPE=Release ..
    cmake --build .

Use the images locally

You can also use the images locally to build or test packages, this is an example command:

docker run -v/tmp/.conan:/home/conan/.conan lasote/conangcc63 bash -c "conan install zlib/1.2.11@conan/stable --build missing"

This command is sharing /tmp/.conan as a shared folder with the conan home, so the Boost package will be built there. You can change the directory or execute any other command that works for your needs.

If you are familiarized with Docker compose, also it's possible to start a new container by:

docker-compose run -v/tmp/.conan:/home/conan/.conan conangcc63 bash -c "conan install zlib/1.2.11@conan/stable --build missing"

Build, Test and Deploy

Introduce

The images are already built and uploaded to "lasote" dockerhub account, If you want to build your own images you can do it by:

$ python build.py

The script build.py will build, test and deploy your Docker image. You can configure all stages by environment variables listed below.

Also, you can build only a version:

E.g Build and test only a image with Conan and gcc-6.3

$ CONAN_GCC_VERSIONS="6.3" python build.py

E.g Build and test only the images with Conan and clang-4.0, clang-3.9

$ CONAN_CLANG_VERSIONS="3.9,4.0" python build.py

The stages that compose the script will be described below:

Build

The first stage collect all compiler versions listed in CONAN_GCC_VERSIONS for Gcc and in CONAN_CLANG_VERSIONS for Clang. If you do not set any compiler version, the script will execute all supported versions for Gcc and Clang.

You can configure only a compiler version or a list, by these variables. If you skipped a compiler list, the build will not be executed for that compiler.

The image tag can be configured by DOCKER_BUILD_TAG. Build default will used latest.

Each image created on this stage will be tagged as DOCKER_USERNAME/conan_compiler_version.

The image will not be removed after build.

Test

The second stage runs the new image created and builds the Conan package gtest/1.8.0. The same build variables, as CONAN_GCC_VERSIONS and CONAN_CLANG_VERSIONS are used to select the compiler and version.

All tests build the package gtest/1.8.0, for x86 and x86_64.

Gcc images use libstdc++.
Clang images use libc++ and libstdc++.

The packages created on test, are not uploaded to Conan server, Are just to validate the image.

Deploy

The final stage pushes the image to docker server (hub.docker). DOCKER_UPLOAD should be true.

The login uses DOCKER_USERNAME and DOCKER_PASSWORD to authenticate.

E.g Upload Docker images to Docker hub, after build and test:

$ DOCKER_USERNAME="lasote" DOCKER_PASSWORD="conan" DOCKER_UPLOAD="TRUE" python build.py

Environment configuration

You can also use environment variables to change the behavior of Conan Docker Tools.

This is especially useful for CI integration.

Build and Test variables:

• GCC_VERSIONS: GCC versions to build, test and deploy, comma separated, e.g. "4.6,4.8,4.9,5.2,5.3,5.4,6.2.6.3"
• CLANG_VERSIONS: Clang versions to build, test and deploy, comma separated, e.g. "3.8,3.9,4.0"
• DOCKER_BUILD_TAG: Docker image tag, e.g "latest", "0.28.1"

Upload related variables:

• DOCKER_USERNAME: Your Docker username to authenticate in Docker server.
• DOCKER_PASSWORD: Your Docker password to authenticate in Docker server
• DOCKER_UPLOAD: If attributed to true, it will upload the generated docker image, positive words are accepted, e.g "True", "1", "Yes". Default "False"
• BUILD_CONAN_SERVER_IMAGE: If attributest to true, it will build and upload an image with the conan_server