Conan package manager
Contents
Conan package manager¶
Conan is a package manager and repository for C and C++, well integrated into CMake.
Table of Contents¶
Example use¶
(this section adapted from a conan tutorial)
For a given dependency, we can search different remote repositories for the correct package and package version. E.g., for poco we search
conan search poco --remote=conan-center
The --remote flag can be shortened to -r, and to search all repositories, we use -r=all.
Individual search results can be analyses a little further in terms of their metadata using
conan inspect [item]
Once we’ve found a package we are happy with, we create a conanfile.txt in the root directory of the project. We format the file as
[requires]
packages/version
[generators]
cmake
in this example, we explicitly use cmake.
Next we want to install the dependencies. Note: conan will use old gcc compilers for backwards compatability < 5.1. We can change this using
conan profile new default --detect # Generates default profile detecting GCC and sets old ABI
conan profile update settings.compiler.libcxx=libstdc++11 default # Sets libcxx to C++11 ABI
To install
mkdir build && cd build
conan install ..
Conan install the requirements and the transitive dependencies for it seamlessly.
We can now define a CMakeLists.txt, and include the lines
include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
conan_basic_setup()
# add executable
target_link_libraries(md5 ${CONAN_LIBS})
and finally build
cmake .. -G "Unix Makefiles"
cmake --build .