Conan Package Tools. Helps with massive package creation and CI integration (Travis CI, Appveyor...)
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README.md

Conan Package Tools Build Status

Introduction

This package allows to automate the creation of conan packages for different configurations.

It eases the integration with CI servers like TravisCI and Appveyor, so you can use the cloud to generate different binary packages for your conan recipe.

Also supports Docker to create packages for different GCC and Clang versions.

Installation

$ pip install conan_package_tools

Or you can clone this repository and store its location in PYTHONPATH.

How it works

Using only conan C/C++ package manager (without conan package tools), you can use the conan create command to generate, for the same recipe, different binary packages for different configurations. The easier way to do it is using profiles:

$ conan create myuser/channel --profile win32
$ conan create myuser/channel --profile raspi
$ ...

The profiles can contain, settings, options, environment variables and build_requires. Take a look to the conan docs to know more.

Conan package tools allows to declare (or autogenerate) a set of different configurations (different profiles). It will call conan create for each one, uploading the generated packages to a remote (if needed), and using optionally docker images to ease the creation of different binaries for different compiler versions (gcc and clang supported).

Basic, but not very practical, example

Create a build.py file in your recipe repository, and add the following lines:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(username="myusername")
    builder.add(settings={"arch": "x86", "build_type": "Debug"},
                options={}, env_vars={}, build_requires={})
    builder.add(settings={"arch": "x86_64", "build_type": "Debug"},
                options={}, env_vars={}, build_requires={})
    builder.run()

Now we can run the python script, the ConanMutiPackager will run the conan create command two times, one to generate x86 Debug package and another one for x86_64 Debug.

> python build.py

############## CONAN PACKAGE TOOLS ######################

INFO: ******** RUNNING BUILD **********
conan create myuser/testing --profile /var/folders/y1/9qybgph50sjg_3sm2_ztlm6dr56zsd/T/tmpz83xXmconan_package_tools_profiles/profile

[build_requires]
[settings]
arch=x86
build_type=Debug
[options]
[scopes]
[env]

...


############## CONAN PACKAGE TOOLS ######################

INFO: ******** RUNNING BUILD **********
conan create myuser/testing --profile /var/folders/y1/9qybgph50sjg_3sm2_ztlm6dr56zsd/T/tmpMiqSZUconan_package_tools_profiles/profile

[build_requires]
[settings]
arch=x86_64
build_type=Debug
[options]
[scopes]
[env]


#########################################################

...

If we inspect the local cache we can see that there are two binaries generated for our recipe, in this case the zlib recipe:

$ conan search zlib/1.2.11@myuser/testing

Existing packages for recipe zlib/1.2.11@myuser/testing:

Package_ID: a792eaa8ec188d30441564f5ba593ed5b0136807
    [options]
        shared: False
    [settings]
        arch: x86
        build_type: Debug
        compiler: apple-clang
        compiler.version: 9.0
        os: Macos
    outdated from recipe: False

Package_ID: e68b263f26a4d7513e28c9cae1673aa0466af777
    [options]
        shared: False
    [settings]
        arch: x86_64
        build_type: Debug
        compiler: apple-clang
        compiler.version: 9.0
        os: Macos
    outdated from recipe: False

Now, we could add new build configurations, but in this case we only want to add Visual Studio configurations and the runtime, but, of course, only if we are on Windows:

import platform
from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(username="myusername")
    if platform.system() == "Windows":
        builder.add(settings={"arch": "x86", "build_type": "Debug", "compiler": "Visual Studio", "compiler.version": 14, "compiler.runtime": "MTd"},
                    options={}, env_vars={}, build_requires={})
        builder.add(settings={"arch": "x86_64", "build_type": "Release", "compiler": "Visual Studio", "compiler.version": 14, "compiler.runtime": "MT"},
                    options={}, env_vars={}, build_requires={})
    else:
        builder.add(settings={"arch": "x86", "build_type": "Debug"},
                    options={}, env_vars={}, build_requires={})
        builder.add(settings={"arch": "x86_64", "build_type": "Debug"},
                    options={}, env_vars={}, build_requires={})
    builder.run()

In the previous example, when we are on Windows, we are adding two build configurations:

- "Visual Studio 14, Debug, MTd runtime"
- "Visual Studio 14, Release, MT runtime"

We can also adjust the options, environment variables and build_requires:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(username="myuser")
    builder.add({"arch": "x86", "build_type": "Release"},
                {"mypackage:option1": "ON"},
                {"PATH": "/path/to/custom"},
                {"*": ["MyBuildPackage/1.0@lasote/testing"]})
    builder.add({"arch": "x86_64", "build_type": "Release"}, {"mypackage:option1": "ON"})
    builder.add({"arch": "x86", "build_type": "Debug"}, {"mypackage:option2": "OFF", "mypackage:shared": True})
    builder.run()

We could continue adding configurations, but probably you realized that it would be such a tedious task if you want to generate many different configurations in different operating systems, using different compilers, different compiler versions etc.

Generating the build configurations automatically

Conan package tools can generate automatically a matrix of build configurations combining architecture, compiler, compiler.version, compiler.runtime, compiler.libcxx, build_type and and shared/static options.

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager()
    builder.add_common_builds()
    builder.run()

If you run the python build.py command, for instance, in Mac OSX, it will add the following configurations automatically:

{'compiler.version': '7.3', 'arch': 'x86', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '7.3', 'arch': 'x86', 'build_type': 'Debug', 'compiler': 'apple-clang'})
{'compiler.version': '7.3', 'arch': 'x86_64', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '7.3', 'arch': 'x86_64', 'build_type': 'Debug', 'compiler': 'apple-clang'})
{'compiler.version': '8.0', 'arch': 'x86', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '8.0', 'arch': 'x86', 'build_type': 'Debug', 'compiler': 'apple-clang'})
{'compiler.version': '8.0', 'arch': 'x86_64', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '8.0', 'arch': 'x86_64', 'build_type': 'Debug', 'compiler': 'apple-clang'})
{'compiler.version': '8.1', 'arch': 'x86', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '8.1', 'arch': 'x86', 'build_type': 'Debug', 'compiler': 'apple-clang'})
{'compiler.version': '8.1', 'arch': 'x86_64', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '8.1', 'arch': 'x86_64', 'build_type': 'Debug', 'compiler': 'apple-clang'})

These are all the combinations of arch=x86/x86_64, build_type=Release/Debug for different compiler versions.

But having different apple-clang compiler versions installed in the same machine is not common at all. We can adjust the compiler versions using a parameter or an environment variable, specially useful for a CI environment:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(apple_clang_versions=["9.0"]) # or declare env var CONAN_APPLE_CLANG_VERSIONS=9.0
    builder.add_common_builds()
    builder.run()

In this case, it will call conan create with only this configurations:

{'compiler.version': '9.0', 'arch': 'x86', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '9.0', 'arch': 'x86', 'build_type': 'Debug', 'compiler': 'apple-clang'})
{'compiler.version': '9.0', 'arch': 'x86_64', 'build_type': 'Release', 'compiler': 'apple-clang'})
{'compiler.version': '9.0', 'arch': 'x86_64', 'build_type': 'Debug', 'compiler': 'apple-clang'})

You can adjust other constructor parameters to control the build configurations that will be generated:

  • gcc_versions: Generate only build configurations for the specified gcc versions (Ignored if the current machine is not Linux)
  • visual_versions: Generate only build configurations for the specified Visual Studio versions (Ignore if the current machine is not Windows)
  • visual_runtimes: Generate only build configurations for the specified runtimes, (only for Visual Studio)
  • apple_clang_versions: Generate only build configurations for the specified apple clang versions (Ignored if the current machine is not OSX)
  • archs: Generate build configurations for the specified architectures, by default, ["x86", "x86_64"].
  • build_types: Generate build configurations for the specified build_types, by default ["Debug", "Release"].

Or you can adjust environment variables:

  • CONAN_GCC_VERSIONS
  • CONAN_VISUAL_VERSIONS
  • CONAN_VISUAL_RUNTIMES
  • CONAN_APPLE_CLANG_VERSIONS
  • CONAN_CLANG_VERSIONS
  • CONAN_ARCHS
  • CONAN_BUILD_TYPES

Check the REFERENCE section to see all the parameters and ENVIRONMENT VARIABLES available.


IMPORTANT! Both the constructor parameters and the corresponding environment variables of the previous list ONLY have effect when using builder.add_common_builds().


So, if we want to generate packages for x86_64 and armv8 but only for Debug and apple-clang 9.0:

$ export CONAN_ARCHS=x86_64,armv8
$ export CONAN_APPLE_CLANG_VERSIONS=9.0
$ export CONAN_BUILD_TYPES=Debug

$ python build.py

There are also two additional parameters of the add_common_builds:

  • pure_c: (Default True) If your project is C++, pass the pure_c=False to add both combinations using libstdc and libstdc++11 for the setting compiler.libcxx. When True, the default profile value of libcxx will be applied. If you don't want libcxx value to apply to your binary packages you have to use the configure method to remove it:
    def configure(self):
        del self.settings.compiler.libcxx
  • shared_option_name: If your conanfile.py have an option shared, the generated builds will contain automatically the "True/False" combination for that option. Pass "False" to deactivate it or "lib_name:shared_option_name" to specify a custom option name, e.j: boost:my_shared``
  • dll_with_static_runtime: Will add also the combination of runtime MT with shared libraries.
from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager()
    builder.add_common_builds(shared_option_name="mypackagename:shared", pure_c=False)
    builder.run()

Filtering the configurations

You can use builder.add_common_builds method and remove then some configurations. EX: Remove the GCC 4.6 packages with build_type=Debug:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(username="myuser")
    builder.add_common_builds()
    filtered_builds = []
    for settings, options, env_vars, build_requires, reference in builder.items:
        if settings["compiler.version"] != "4.6" and settings["build_type"] != "Debug":
             filtered_builds.append([settings, options, env_vars, build_requires])
    builder.builds = filtered_builds
    builder.run()

Using Docker

Instance ConanMultiPackager with the parameter use_docker=True, or declare the environment variable CONAN_USE_DOCKER: It will launch, when needed, a container for the current build configuration that is being built (only for Linux builds).

There are docker images available for different gcc versions: 4.6, 4.8, 4.9, 5, 6, 7 and clang versions: 3.8, 3.9, 4.0.

The containers will share the conan storage directory, so the packages will be generated in your conan directory.

Example:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager()
    builder.add_common_builds()
    builder.run()

And run the build.py:

$ export CONAN_USERNAME=myuser
$ export CONAN_GCC_VERSIONS=4.9
$ export CONAN_DOCKER_IMAGE=lasote/conangcc49
$ export CONAN_USE_DOCKER=1
$ python build.py

It will generate a set of build configurations (profiles) for gcc 4.9 and will run it inside a container of the lasote/conangcc49 image.

If you want to run the arch="x86" build inside a docker container of 32 bits you can set the parameter docker_32_images in the ConanMultiPackager constructor or set the environment variable CONAN_DOCKER_32_IMAGES. In this case, the docker image name to use will be appended with -i386.

The Docker images used by default both for 64 and 32 bits are pushed to dockerhub and its Dockerfiles are available in the conan-docker-tools repository.

Running scripts and executing commands before to build on Docker

When Conan Package Tools uses Docker to build your packages, sometimes you need to execute a "before build" step. If you need to install packages, change files or create a setup, there is an option for that: docker_entry_script

Example:

This example shows how to install tzdata package by apt-get, before to build the Conan package.

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    command = "sudo apt-get -qq update && sudo apt-get -qq install -y tzdata"
    builder = ConanMultiPackager(use_docker=True, docker_image='lasote/conangcc7', docker_entry_script=command)
    builder.add_common_builds()
    builder.run()

Also, it's possible to run some internal script, before to build the package:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    command = "python bootstrap.py"
    builder = ConanMultiPackager(use_docker=True, docker_image='lasote/conangcc7', docker_entry_script=command)
    builder.add_common_builds()
    builder.run()

Specifying a different base profile

The options, settings and environment variables that the add_common_builds() method generate, are applied into the default profile of the conan installation. If you want to use a different profile you can pass the name of the profile in the run() method.

Example:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(clang_versions=["3.8", "3.9"])
    builder.add_common_builds()
    builder.run("myclang")

Alternatively you can use the CONAN_BASE_PROFILE environment variable to choose a different base profile:

CONAN_BASE_PROFILE=myclang

The CI integration

If you are going to use a CI server to generate different binary packages for your recipe, the best approach is to control the build configurations with environment variables.

So, having a generic build.py should be enough for almost all the cases:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager()
    builder.add_common_builds(shared_option_name="mypackagename:shared", pure_c=False)
    builder.run()

Then, in your CI configuration, you can declare different environment variables to limit the build configurations to an specific compiler version, using a specific docker image etc.

For example, if you declare the following environment variables:

CONAN_GCC_VERSIONS=4.9
CONAN_DOCKER_IMAGE=lasote/conangcc49

the add_common_builds() method will only add different build configurations for GCC=4.9 and will run them in a docker container.

You can see working integrations with Travis and Appveyor in the zlib repository here

Travis integration

Travis CI can generate a build with multiple jobs defining a matrix with environment variables. We can configure the builds to be executed in the jobs by defining some environment variables.

The following is a real example of a .travis.yml file that will generate packages for Linux gcc (4.9, 5, 6), Linux Clang (3.9 and 4.0) and OSx with apple-clang (8.0, 8.1 and 9.0).

Remember, you can use conan new command to generate the base files for appveyor, travis etc. Check conan new --help.

.travis.yml example:

env:
   global:
     - CONAN_USERNAME: "conan" # ADJUST WITH YOUR REFERENCE USERNAME!
     - CONAN_LOGIN_USERNAME: "lasote" # ADJUST WITH YOUR LOGIN USERNAME!
     - CONAN_CHANNEL: "testing" # ADJUST WITH YOUR CHANNEL!
     - CONAN_UPLOAD: "https://api.bintray.com/conan/conan-community/conan" # ADJUST WITH YOUR REMOTE!
     - CONAN_STABLE_BRANCH_PATTERN: "release/*"
     - CONAN_UPLOAD_ONLY_WHEN_STABLE: 1 # Will only upload when the branch matches "release/*"

linux: &linux
   os: linux
   sudo: required
   language: python
   python: "3.6"
   services:
     - docker
osx: &osx
   os: osx
   language: generic
matrix:
   include:

      - <<: *linux
        env: CONAN_GCC_VERSIONS=4.9 CONAN_DOCKER_IMAGE=lasote/conangcc49
      - <<: *linux
        env: CONAN_GCC_VERSIONS=5 CONAN_DOCKER_IMAGE=lasote/conangcc5
      - <<: *linux
        env: CONAN_GCC_VERSIONS=6 CONAN_DOCKER_IMAGE=lasote/conangcc6
      - <<: *linux
        env: CONAN_GCC_VERSIONS=7 CONAN_DOCKER_IMAGE=lasote/conangcc7
      - <<: *linux
        env: CONAN_CLANG_VERSIONS=3.9 CONAN_DOCKER_IMAGE=lasote/conanclang39
      - <<: *linux
        env: CONAN_CLANG_VERSIONS=4.0 CONAN_DOCKER_IMAGE=lasote/conanclang40
      - <<: *osx
        osx_image: xcode7.3
        env: CONAN_APPLE_CLANG_VERSIONS=7.3
      - <<: *osx
        osx_image: xcode8.2
        env: CONAN_APPLE_CLANG_VERSIONS=8.0
      - <<: *osx
        osx_image: xcode8.3
        env: CONAN_APPLE_CLANG_VERSIONS=8.1
      - <<: *osx
        osx_image: xcode9
        env: CONAN_APPLE_CLANG_VERSIONS=9.0

install:
  - chmod +x .travis/install.sh
  - ./.travis/install.sh

script:
  - chmod +x .travis/run.sh
  - ./.travis/run.sh

You can also use multiples "pages" to split the builds in different jobs (Check pagination section first to understand):

.travis.yml

env:
   global:
     - CONAN_USERNAME: "conan" # ADJUST WITH YOUR REFERENCE USERNAME!
     - CONAN_LOGIN_USERNAME: "lasote" # ADJUST WITH YOUR LOGIN USERNAME!
     - CONAN_CHANNEL: "testing" # ADJUST WITH YOUR CHANNEL!
     - CONAN_UPLOAD: "https://api.bintray.com/conan/conan-community/conan" # ADJUST WITH YOUR REMOTE!
     - CONAN_STABLE_BRANCH_PATTERN: "release/*"
     - CONAN_UPLOAD_ONLY_WHEN_STABLE: 1 # Will only upload when the branch matches "release/*"

linux: &linux
   os: linux
   sudo: required
   language: python
   python: "3.6"
   services:
     - docker
osx: &osx
   os: osx
   language: generic
matrix:
   include:

      - <<: *linux
        env: CONAN_GCC_VERSIONS=4.9 CONAN_DOCKER_IMAGE=lasote/conangcc49 CONAN_CURRENT_PAGE=1

      - <<: *linux
        env: CONAN_GCC_VERSIONS=4.9 CONAN_DOCKER_IMAGE=lasote/conangcc49 CONAN_CURRENT_PAGE=2

      - <<: *linux
        env: CONAN_GCC_VERSIONS=5 CONAN_DOCKER_IMAGE=lasote/conangcc5 CONAN_CURRENT_PAGE=1

       - <<: *linux
        env: CONAN_GCC_VERSIONS=5 CONAN_DOCKER_IMAGE=lasote/conangcc5 CONAN_CURRENT_PAGE=2

      - <<: *linux
        env: CONAN_GCC_VERSIONS=6 CONAN_DOCKER_IMAGE=lasote/conangcc6 CONAN_CURRENT_PAGE=1

      - <<: *linux
        env: CONAN_GCC_VERSIONS=6 CONAN_DOCKER_IMAGE=lasote/conangcc6 CONAN_CURRENT_PAGE=2

      - <<: *linux
        env: CONAN_CLANG_VERSIONS=3.9 CONAN_DOCKER_IMAGE=lasote/conanclang39 CONAN_CURRENT_PAGE=1

       - <<: *linux
        env: CONAN_CLANG_VERSIONS=3.9 CONAN_DOCKER_IMAGE=lasote/conanclang39 CONAN_CURRENT_PAGE=2

      - <<: *linux
        env: CONAN_CLANG_VERSIONS=4.0 CONAN_DOCKER_IMAGE=lasote/conanclang40 CONAN_CURRENT_PAGE=1

      - <<: *linux
        env: CONAN_CLANG_VERSIONS=4.0 CONAN_DOCKER_IMAGE=lasote/conanclang40 CONAN_CURRENT_PAGE=2

      - <<: *osx
        osx_image: xcode7.3
        env: CONAN_APPLE_CLANG_VERSIONS=7.3 CONAN_CURRENT_PAGE=1

      - <<: *osx
        osx_image: xcode7.3
        env: CONAN_APPLE_CLANG_VERSIONS=7.3 CONAN_CURRENT_PAGE=2

      - <<: *osx
        osx_image: xcode8.2
        env: CONAN_APPLE_CLANG_VERSIONS=8.0 CONAN_CURRENT_PAGE=1

      - <<: *osx
        osx_image: xcode8.2
        env: CONAN_APPLE_CLANG_VERSIONS=8.0 CONAN_CURRENT_PAGE=2

      - <<: *osx
        osx_image: xcode8.3
        env: CONAN_APPLE_CLANG_VERSIONS=8.1 CONAN_CURRENT_PAGE=1

      - <<: *osx
        osx_image: xcode8.3
        env: CONAN_APPLE_CLANG_VERSIONS=8.1 CONAN_CURRENT_PAGE=2

install:
  - chmod +x .travis/install.sh
  - ./.travis/install.sh

script:
  - chmod +x .travis/run.sh
  - ./.travis/run.sh

.travis/install.sh

#!/bin/bash

set -e
set -x

if [[ "$(uname -s)" == 'Darwin' ]]; then
    brew update || brew update
    brew outdated pyenv || brew upgrade pyenv
    brew install pyenv-virtualenv
    brew install cmake || true

    if which pyenv > /dev/null; then
        eval "$(pyenv init -)"
    fi

    pyenv install 2.7.10
    pyenv virtualenv 2.7.10 conan
    pyenv rehash
    pyenv activate conan
fi

pip install conan --upgrade
pip install conan_package_tools==0.3.7dev12

conan user

If you want to "pin" a conan_package_tools version use:

pip install conan_package_tools==0.3.2

That version will be used also in the docker images.

.travis/run.sh

#!/bin/bash

set -e
set -x

if [[ "$(uname -s)" == 'Darwin' ]]; then
    if which pyenv > /dev/null; then
        eval "$(pyenv init -)"
    fi
    pyenv activate conan
fi

python build.py

Remember to set the CONAN_PASSWORD variable in the travis build control panel!

Appveyor integration

This is very similar to Travis CI. With the same build.py script we have the following appveyor.yml file:

build: false

environment:
    PYTHON: "C:\\Python27"
    PYTHON_VERSION: "2.7.8"
    PYTHON_ARCH: "32"

    CONAN_USERNAME: "lasote"
    CONAN_LOGIN_USERNAME: "lasote"
    CONAN_CHANNEL: "stable"
    VS150COMNTOOLS: "C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\Common7\\Tools\\"
    CONAN_UPLOAD: "https://api.bintray.com/conan/luisconanorg/fakeconancenter"
    CONAN_REMOTES: "https://api.bintray.com/conan/luisconanorg/conan-testing"

    matrix:
        - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
          CONAN_VISUAL_VERSIONS: 12
        - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
          CONAN_VISUAL_VERSIONS: 14
        - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
          CONAN_VISUAL_VERSIONS: 15


install:
  - set PATH=%PATH%;%PYTHON%/Scripts/
  - pip.exe install conan_package_tools --upgrade
  - conan user # It creates the conan data directory

test_script:
  - python build.py
  • Remember to set the CONAN_PASSWORD variable in appveyor build control panel!

Bamboo CI integration

Bamboo is a commercial CI tool developed by Atlassian. When building from bamboo, several environment variables get set during builds.

If the env var bamboo_buildNumber is set and the branch name (bamboo_planRepository_branch env var) matches stable_branch_pattern, then the channel name gets set to stable.

Jenkins CI integration

Jenkins is an open source CI tool that was originally forked from hudson. When building on jenkins, several environment variables get set during builds.

If the env var JENKINS_URL is set and the branch name (BRANCH_NAME env var) matches stable_branch_pattern, then the channel name gets set to stable.

Currently, only the pipeline builds set the BRANCH_NAME env var automatically.

GitLab CI integration

GitLab CI is a commercial CI tool developed by GitLab. When building on gitlab-ci, several environment variables get set during builds.

If the env var GITLAB_CI is set and the branch name (CI_BUILD_REF_NAME env var) matches stable_branch_pattern, then the channel name gets set to stable.

Upload packages

You can upload the generated packages automatically to a conan-server using the following environment variables (parameters also available):

  • Remote url:

      CONAN_UPLOAD: "https://api.bintray.com/conan/conan-community/conan"
    
  • User to login in the remote:

      CONAN_LOGIN_USERNAME: "lasote"
    
  • User (to generate the packages in that user namespace, e.j: zlib/1.2.11@conan/stable):

      CONAN_USERNAME: "conan"
    
  • Channel (to generate the packages in that channel namespace, e.j: zlib/1.2.11@conan/testing):

      CONAN_CHANNEL: "testing"
    
  • If the detected branch in the CI matches the pattern, declare the CONAN_CHANNEL as stable:

      CONAN_STABLE_BRANCH_PATTERN: "release/*"
    

Pagination

Sometimes, if your library is big or complex enough in terms of compilation time, the CI server could reach the maximum time of execution, because it's building, for example, 20 different binary packages for your library in the same machine.

You can split the different build configurations in different "pages". So, you can configure your CI to run more "worker" machines, one per "page".

There are two approaches:

Sequencial distribution

By simply passing two pagination parameters, curpage and total_pages or the corresponding environment variables:

$ export CONAN_TOTAL_PAGES=3
$ export CONAN_CURRENT_PAGE=1

$ python build.py

If you added 10 different build configurations to the builder:

  • With CONAN_CURRENT_PAGE=1 it runs only 1,4,7,10
  • With CONAN_CURRENT_PAGE=2 it runs only 2,5,8
  • With CONAN_CURRENT_PAGE=3 it runs only 3,6,9

In your CI server you can configure a matrix with different "virtual machines" or "jobs" or "workers": In each "machine" you can specify a different CONAN_CURRENT_PAGE environment variable. So your different configurations will be distributed in the different machines.

Named pages

By adding builds to the named_builds dictionary, and passing curpage with the page name:

from cpt.packager import ConanMultiPackager
from collections import defaultdict

if __name__ == '__main__':
    builder = ConanMultiPackager(curpage="x86", total_pages=2)
    named_builds = defaultdict(list)
    builder.add_common_builds(shared_option_name="bzip2:shared", pure_c=True)
    for settings, options, env_vars, build_requires, reference in builder.items:
        named_builds[settings['arch']].append([settings, options, env_vars, build_requires, reference])
    builder.named_builds = named_builds
    builder.run()

named_builds not have a dictionary entry for x86 and another for x86_64:

  • for CONAN_CURRENT_PAGE="x86" it would do all x86 builds
  • for CONAN_CURRENT_PAGE="x86_64" it would do all x86_64 builds

Generating multiple references for the same recipe

You can add a different reference in the builds tuple, so for example, if your recipe has no "version" field, you could generate several versions in the same build script. Conan package tools will export the recipe using the different reference automatically:

from cpt.packager import ConanMultiPackager

if __name__ == '__main__':
    builder = ConanMultiPackager()
    builder.add_common_builds(reference="mylib/1.0@conan/stable")
    builder.add_common_builds(reference="mylib/2.0@conan/stable")
    builder.run()

Working with Bintray: Configuring repositories

Use the argument upload or environment variable CONAN_UPLOAD to set the URL of the repository where you want to upload your packages. Will be also used to read from it.

Use CONAN_PASSWORD environment variable to set the API key from Bintray. If your username in Bintray doesn't match with the specified CONAN_USERNAME specify the variable CONAN_LOGIN_USERNAME or the parameter login_username to ConanMultiPackager .

If you are using travis or appveyor you can use a hidden enviroment variable from the repository setup package.

To get an API key in Bintray to "Edit profile"/"API key".

Use the argument remotes or environment variable CONAN_REMOTES to configure additional repositories containing needed requirements.

Example: Add your personal Bintray repository to retrieve and upload your packages and also some other different repositories to read some requirements.

In your .travis.yml or appveyor.yml files declare the environment variables:

CONAN_UPLOAD="https://api.bintray.com/mybintrayuser/conan_repository"
CONAN_REMOTES="https://api.bintray.com/other_bintray_user/conan-repo, https://api.bintray.com/other_bintray_user2/conan-repo"

Or in your build.py:

from cpt.packager import ConanMultiPackager

if __name__ == "__main__":
    builder = ConanMultiPackager(username="myuser",
                                 upload="https://api.bintray.com/mybintrayuser/conan_repository",
                                 remotes="https://api.bintray.com/other_bintray_user/conan-repo, https://api.bintray.com/other_bintray_user2/conan-repo")
    builder.add_common_builds()
    builder.run()

Visual Studio auto-configuration

When the builder detects a Visual Studio compiler and its version, it will automatically configure the execution environment for the "conan test" command with the vcvarsall.bat script (provided by all Microsoft Visual Studio versions). So you can compile your project with the right compiler automatically, even without CMake.

MinGW builds

MinGW compiler builds are also supported. You can use this feature with Appveyor.

You can choose different MinGW compiler configurations:

  • Version: 4.8 and 4.9 are supported
  • Architecture: x86 and x86_64 are supported
  • Exceptions: seh and sjlj are supported
  • Threads: posix and win32 are supported

Using MINGW_CONFIGURATIONS env variable in Appveyor:

MINGW_CONFIGURATIONS: '4.9@x86_64@seh@posix, 4.9@x86_64@seh@win32'

Check an example here

Clang builds

Clang compiler builds are also supported. You can use this feature with TravisCI.

You can choose different Clang compiler configurations:

  • Version: 3.8, 3.9 and 4.0 are supported
  • Architecture: x86 and x86_64 are supported

Using CONAN_CLANG_VERSIONS env variable in Travis ci or Appveyor:

CONAN_CLANG_VERSIONS = "3.8,3.9,4.0"

FULL REFERENCE

ConanMultiPackager parameters reference

  • args: List with the parameters that will be passed to "conan test" command. e.j: args=['--build', 'all']. Default sys.argv[1:]

  • username: The username (part of the package reference, not the login_username)

  • login_username: The login username. Could take two possible values:

    • String with the login":

      login_username = "my_user"
      
    • Dict containing the remote name and the login for that remote. Use together with "remotes" variable to specify remote names e.j:

      login_username = {"remote1": "my_user", "my_artifactory": "other_user"}
      
  • password. Password to authenticate with the remotes. Could take two possible values:

    • String with the password:

      password = "my_pass"
      
    • Dict containing the remote name and the login for that remote. Use together with "remotes" variable to specify remote names e.j:

      password = {"remote1": "my_pass", "my_artifactory": "my_pass2"}
      
  • remotes: Could take two values:

    • String of URLs separated by ",":

      remotes = "https://api.bintray.com/conan/conan-community/conan,https://api.bintray.com/conan/other/conan2"
      
    • List of tuples containing the "url", "use_ssl" flag and "name" . e.j:

      remotes = [("https://api.bintray.com/conan/conan-community/conan", True, "remote1"),
                 ("https://api.bintray.com/conan/other/conan2", False, "remote2")]
      
  • gcc_versions: List with a subset of gcc_versions. Default ["4.9", "5", "6", "7"]

  • clang_versions: List with a subset of clang_versions. Default ["3.8", "3.9", "4.0"]

  • apple_clang_versions: List with a subset of apple-clang versions. Default ["6.1", "7.3", "8.0"]

  • visual_versions: List with a subset of Visual Studio versions. Default [10, 12, 14]

  • visual_runtimes: List containing Visual Studio runtimes to use in builds. Default ["MT", "MD", "MTd", "MDd"]

  • mingw_configurations: Configurations for MinGW

  • archs: List containing specific architectures to build for. Default ["x86", "x86_64"]

  • use_docker: Use docker for package creation in Linux systems.

  • docker_image_skip_update: If defined, it will skip the initialization update of "conan package tools" and "conan" in the docker image. By default is False.

  • docker_image_skip_pull: If defined, it will skip the "docker pull" command, enabling a local image to be used, and without being overwritten.

  • always_update_conan_in_docker: If True, "conan package tools" and "conan" will be installed and upgraded in the docker image in every build execution. and the container won't be commited with the modifications.

  • docker_entry_script: Command to be executed before to build when running Docker.

  • docker_32_images: If defined, and the current build is arch="x86" the docker image name will be appended with "-i386". e.j: "lasote/conangcc63-i386"

  • curpage: Current page of packages to create

  • total_pages: Total number of pages

  • vs10_x86_64_enabled: Flag indicating whether or not to build for VS10 64bits. Default [False]

  • upload_retry: Num retries in upload in case of failure.

  • upload_only_when_stable: Will try to upload only if the channel is the stable channel. Default [False]

  • build_types: List containing specific build types. Default ["Release", "Debug"]

  • skip_check_credentials: Conan will skip checking the user credentials before building the packages. And if no user/remote is specified, will try to upload with the already stored credentiales in the local cache. Default [False]

  • allow_gcc_minors Declare this variable if you want to allow gcc >=5 versions with the minor (5.1, 6.3 etc).

  • exclude_vcvars_precommand For Visual Studio builds, it exclude the vcvars call to set the environment.

  • build_policy: Default None.

    • "never": No build from sources, only download packages.
    • "missing": Build only missing packages.
    • "outdated": Build only missing or if the available package is not built with the current recipe. Useful to upload new configurations, e.j packages for a new compiler without rebuild all packages.
  • test_folder: Custom test folder consumed by Conan create, e.j .conan/test_package

Upload related parameters:

  • upload: Could take two values:

    • String with an URL.

      upload = "https://api.bintray.com/conan/conan-community/conan"
      
    • Tuple containing the "url", "use_ssl" flag and "name".

      upload = ("https://api.bintray.com/conan/conan-community/conan", True, "remote1")
      
  • reference: Reference of the package to upload. Ex: "zlib/1.2.8". If not specified it will be read from the conanfile.py.

  • remote: Alternative remote name. Default "default"

  • stable_branch_pattern: Regular expression, if current git branch matches this pattern, the packages will be uploaded to stable channel. Default "master"

  • stable_channel: Stable channel, default "stable".

  • channel: Channel where your packages will be uploaded if previous parameter doesn't match

Commit messages reference

The current commit message can contain special messages:

  • [skip ci]: git sWill skip the building of any package.
  • [build=XXX]: Being XXX a build policy (see build_policy parameter reference)

Complete ConanMultiPackager methods reference:

  • add_common_builds(shared_option_name=None, pure_c=True, dll_with_static_runtime=False): Generate a set of package configurations and add them to the list of packages that will be created.

    • shared_option_name: If given, ConanMultiPackager will add different configurations for -o shared=True and -o shared=False.
    • pure_c: ConanMultiPackager won't generate different builds for the libstdc++ c++ standard library, because it is a pure C library.
    • dll_with_static_runtime: generate also build for "MT" runtime when the library is shared.
  • login(remote_name, user=None, password=None, force=False): Performs a conan user command in the specified remote. If force the login will be called every time, otherwise, for the same remote, ConanMultiPackager will call conan user only once even with multiple calls to the login() method.

  • add(settings=None, options=None, env_vars=None, build_requires=None): Add a new build configuration, so a new binary package will be built for the specified configuration.

  • run(): Run the builds (Will invoke conan create for every specified configuration)

Environment configuration

You can also use environment variables to change the behavior of ConanMultiPackager, so that you don't pass parameters to the ConanMultiPackager constructor.

This is especially useful for CI integration.

  • CONAN_USERNAME: Your conan username (for the package reference)

  • CONAN_REFERENCE: Reference of the package to upload, e.g. "zlib/1.2.8". Otherwise it will be read from the conanfile.py

  • CONAN_LOGIN_USERNAME: Unique login username for all remotes. Will use "CONAN_USERNAME" when not present.

  • CONAN_LOGIN_USERNAME_XXX: Specify a login for a remote name:

    • CONAN_LOGIN_USERNAME_MYREPO=my_username
  • CONAN_PASSWORD: Conan Password, or API key if you are using Bintray.

  • CONAN_PASSWORD_XXX: Specify a password for a remote name:

    • CONAN_PASSWORD_MYREPO=mypassword
  • CONAN_REMOTES: List of URLs separated by "," for the additional remotes (read). You can specify the SSL verify flag and the remote name using the "@" separator. e.j:

    • CONAN_REMOTES=url1@True@remote_name, url2@False@remote_name2

    The remote name is useful in case you want to specify custom credentials for different remotes. See CONAN_LOGIN_USERNAME_XXX and CONAN_PASSWORD_XXX

  • CONAN_UPLOAD: URL of the repository where we want to use to upload the packages. The value can containing the URL, the SSL validation flag and remote name (last two optionals) separated by "@". e.j:

    • CONAN_UPLOAD=https://api.bintray.com/conan/conan-community/conan
    • CONAN_UPLOAD=https://api.bintray.com/conan/conan-community/conan@True
    • CONAN_UPLOAD=https://api.bintray.com/conan/conan-community/conan@True@other_repo_name

    If a remote name is not specified, upload_repo will be used as a remote name. If the SSL validation configuration is not specified, it will use True by default.

  • CONAN_UPLOAD_RETRY: If defined, in case of fail retries to upload again the specified times

  • CONAN_UPLOAD_ONLY_WHEN_STABLE: If defined, will try to upload the packages only when the current channel is the stable one.

  • CONAN_SKIP_CHECK_CREDENTIALS: Conan will skip checking the user credentials before building the packages. And if no user/remote is specified, will try to upload with the already stored credentiales in the local cache. Default [False]

  • CONAN_DOCKER_ENTRY_SCRIPT: Command to be executed before to build when running Docker.

  • CONAN_GCC_VERSIONS: Gcc versions, comma separated, e.g. "4.6,4.8,5,6"

  • CONAN_CLANG_VERSIONS: Clang versions, comma separated, e.g. "3.8,3.9,4.0"

  • CONAN_APPLE_CLANG_VERSIONS: Apple clang versions, comma separated, e.g. "6.1,8.0"

  • CONAN_ARCHS: Architectures to build for, comma separated, e.g. "x86,x86_64"

  • CONAN_BUILD_TYPES: Build types to build for, comma separated, e.g. "Release,Debug"

  • CONAN_VISUAL_VERSIONS: Visual versions, comma separated, e.g. "12,14"

  • CONAN_VISUAL_RUNTIMES: Visual runtimes, comma separated, e.g. "MT,MD"

  • CONAN_USE_DOCKER: If defined will use docker

  • CONAN_CURRENT_PAGE: Current page of packages to create

  • CONAN_TOTAL_PAGES: Total number of pages

  • CONAN_DOCKER_IMAGE: If defined and docker is being used, it will use this dockerimage instead of the default images, e.g. "lasote/conangcc63"

  • CONAN_DOCKER_IMAGE_SKIP_UPDATE: If defined, it will skip the initialization update of "conan package tools" and "conan" in the docker image. By default is False.

  • CONAN_DOCKER_IMAGE_SKIP_PULL: If defined, it will skip the "docker pull" command, enabling a local image to be used, and without being overwritten.

  • CONAN_ALWAYS_UPDATE_CONAN_DOCKER: If defined, "conan package tools" and "conan" will be installed and upgraded in the docker image in every build execution and the container won't be commited with the modifications.

  • CONAN_DOCKER_32_IMAGES: If defined, and the current build is arch="x86" the docker image name will be appended with "-i386". e.j: "lasote/conangcc63-i386"

  • CONAN_STABLE_BRANCH_PATTERN: Regular expression, if current git branch matches this pattern, the packages will be uploaded to CONAN_STABLE_CHANNEL channel. Default "master". E.j: "release/*"

  • CONAN_STABLE_CHANNEL: Stable channel name, default "stable"

  • CONAN_CHANNEL: Channel where your packages will be uploaded if the previous parameter doesn't match

  • CONAN_PIP_PACKAGE: Specify a conan package to install (by default, installs the latest) e.j conan==0.0.1rc7

  • MINGW_CONFIGURATIONS: Specify a list of MinGW builds. See MinGW builds section.

  • CONAN_BASH_PATH: Path to a bash executable. Used only in windows to help the tools.run_in_windows_bash() function to locate our Cygwin/MSYS2 bash. Set it with the bash executable path if it’s not in the PATH or you want to use a different one.

  • CONAN_PIP_USE_SUDO Use "sudo" when invoking pip, by default it will use sudo when not using Windows. "False" to deactivate.

  • CONAN_DOCKER_USE_SUDO Use "sudo" when invoking docker, by default it will use sudo when not using Windows. "False" to deactivate.

  • CONAN_ALLOW_GCC_MINORS Declare this variable if you want to allow gcc >=5 versions with the minor (5.1, 6.3 etc).

  • CONAN_EXCLUDE_VCVARS_PRECOMMAND For Visual Studio builds, it exclude the vcvars call to set the environment.

  • CONAN_BUILD_REQUIRES You can specify additional build requires for the generated profile with an environment variable following the same profile syntax and separated by "," i.e CONAN_BUILD_REQUIRES: mingw-installer/7.1@conan/stable, pattern: other/1.0@conan/stable

  • CONAN_BUILD_POLICY: Default None.

    • "never": No build from sources, only download packages.
    • "missing": Build only missing packages.
    • "outdated": Build only missing or if the available package is not built with the current recipe. Useful to upload new configurations, e.j packages for a new compiler without rebuild all packages.
  • CONAN_BASE_PROFILE: Apply options, settings, etc. to this profile instead of default.

  • CPT_TEST_FOLDER: Custom test_package path, e.j .conan/test_package

Full example

You can see the full zlib example here