Conan a C/C++ Package Manager
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Conan is a C/C++ package manager that allows defining and consuming packages from source code or pre-compiled binaries. It supports dependency management, configuration, and testing of C/C++ projects. The document provides an example of using Conan to retrieve and link to the Poco networking library in a C++ project, and describes how to create, test, and publish Conan packages from source code.
![Example
Using Poco Network
# conanfile.txt
[requires]
Poco/1.7.5@lasote/stable
[generators]
cmake](https://image.slidesharecdn.com/conanpackagemanager-171005233042/85/Conan-a-C-C-Package-Manager-11-320.jpg)
![conanfile.py
class ExampleConan(ConanFile):
name = "conan-example"
version = "0.1.0"
settings = "os", "arch", "compiler", "build_type"
generators = "cmake"
exports = "*"
requires = "Poco/1.7.5@lasote/stable"
def build(self):
cmake = CMake(self.settings)
self.run('cmake %s %s' % (self.conanfile_directory,
cmake.command_line))
self.run("cmake --build . %s" % cmake.build_config)
def package(self):
self.copy("*.a", dst='lib', src='lib')
self.copy("*.hpp", dst='include', src='src')
def package_info(self):
self.cpp_info.libs = ["example"]
Package
How to create
from source](https://image.slidesharecdn.com/conanpackagemanager-171005233042/85/Conan-a-C-C-Package-Manager-16-320.jpg)
Conan a C/C++ Package Manager
- 1. Conan a C/C++ package manager @uilian
- 3. Just a code ... // main.cpp #include <iostream> #include "Poco/Net/NetworkInterface.h" static void print_interfaces() { using Poco::Net::NetworkInterface; const auto interfaces = NetworkInterface::map(false, false); for (const auto& it : interfaces) { std::cout << it.second.name() << ‘n’; } } int main() { print_interfaces(); }
- 6. Conan Features ● Free Software and Open Source; ● MIT License; ● GIT style, decentralized - distributed; ● Handle sources and binaries; ● Generates VS, CMake, qmake, ...
- 7. foobar@khomp ~ $ sudo pip install conan foobar@khomp ~ $ conan user It seems to be the first time you run conan Auto detecting your dev setup to initialize conan.conf Found gcc 6.2 Default conan.conf settings os=Linux arch=x86_64 compiler=gcc compiler.version=6.2 build_type=Release *** You can change them in ~/.conan/conan.conf *** *** Or override with -s compiler='other' -s ...s*** Install Using pip
- 9. // main.cpp #include <iostream> #include "Poco/Net/NetworkInterface.h" static void print_interfaces() { using Poco::Net::NetworkInterface; const auto interfaces = NetworkInterface::map(false, false); for (const auto& it : interfaces) { std::cout << it.second.name() << ‘n’; } } int main() { print_interfaces(); } Example Using Poco Network
- 10. Example Using Poco Network # CMakeLists.txt project(network-interfaces CXX) cmake_minimum_required(VERSION 2.8) include(${CMAKE_BINARY_DIR}/conanbuildinfo. cmake) conan_basic_setup() add_executable(${PROJECT_NAME} main.cpp) target_link_libraries(${PROJECT_NAME} ${CONAN_LIBS})
- 11. Example Using Poco Network # conanfile.txt [requires] Poco/1.7.5@lasote/stable [generators] cmake
- 12. foobar@khomp ~ $ mkdir build && cd build foobar@khomp ~/build $ conan install .. foobar@khomp ~/build $ cmake .. && cmake --build . foobar@khomp ~/build $ bin/network-interfaces lo enp1s0 enp2s0 docker0 Example Using Poco Network
- 13. Question
- 15. Package How to create from source Conan Example gitlab.khomp.corp/uilian/conan-example Asciinema https://asciinema.org/a/102922
- 16. conanfile.py class ExampleConan(ConanFile): name = "conan-example" version = "0.1.0" settings = "os", "arch", "compiler", "build_type" generators = "cmake" exports = "*" requires = "Poco/1.7.5@lasote/stable" def build(self): cmake = CMake(self.settings) self.run('cmake %s %s' % (self.conanfile_directory, cmake.command_line)) self.run("cmake --build . %s" % cmake.build_config) def package(self): self.copy("*.a", dst='lib', src='lib') self.copy("*.hpp", dst='include', src='src') def package_info(self): self.cpp_info.libs = ["example"] Package How to create from source
- 18. Package How to test Project structure
- 19. Package How to test class TestExampleConan(ConanFile): name = "TestExampleConan" version = "0.1.0" settings = "os", "compiler", "build_type", "arch" requires = "conan-example/0.1.0@uilian/testing", "gtest/1.8.0@lasote/stable" generators = "cmake" def build(self): cmake = CMake(self.settings) self.run('cmake %s %s' % (self.conanfile_directory, cmake.command_line)) self.run("cmake --build . %s" % cmake.build_config) def imports(self): self.copy(pattern="*.a", dst="lib", src="lib") self.copy(pattern="*.hpp", dst="include", src="include") def test(self): self.run("cmake --build . --target test")
- 20. foobar@khomp ~ $ conan test ● Build project ● Export sources ● Cache package ● Build test ● Import project package from cache ● Execute all tests Example Using Poco Network
- 22. Package Tools Generate multiples packages Scenario: Khomp GCC-4.8 GCC-5.4 GCC-6.2 conan-example/ 0.1.0@uilian/testing
- 23. Package How to test # build.py from conan.packager import ConanMultiPackager if __name__ == "__main__": builder = ConanMultiPackager(username="myuser") builder.add_common_builds() builder.run()