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Co-authored-by: Drew Risinger <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| # This code is part of Qiskit. | ||
| # | ||
| # (C) Copyright IBM 2020 | ||
| # | ||
| # This code is licensed under the Apache License, Version 2.0. You may | ||
| # obtain a copy of this license in the LICENSE.txt file in the root directory | ||
| # of this source tree or at http://www.apache.org/licenses/LICENSE-2.0. | ||
| # | ||
| # Any modifications or derivative works of this code must retain this | ||
| # copyright notice, and modified files need to carry a notice indicating | ||
| # that they have been altered from the originals. | ||
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| macro(setup_dependencies) | ||
| # Defines AER_DEPENDENCY_PKG alias which refers to either conan-provided or system libraries. | ||
| if(DISABLE_CONAN) | ||
| _use_system_libraries() | ||
| else() | ||
| include(conan_utils) | ||
| setup_conan() | ||
| endif() | ||
| endmacro() | ||
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| macro(_use_system_libraries) | ||
| # Use system libraries | ||
| _import_aer_system_dependency(nlohmann_json 3.1.1) | ||
| _import_aer_system_dependency(spdlog 1.5.0) | ||
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| if(SKBUILD) | ||
| _import_aer_system_dependency(muparserx 4.0.8) | ||
| endif() | ||
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| if(AER_THRUST_BACKEND AND NOT AER_THRUST_BACKEND STREQUAL "CUDA") | ||
| string(TOLOWER ${AER_THRUST_BACKEND} THRUST_BACKEND) | ||
| _import_aer_system_dependency(Thrust 1.9.5) | ||
| endif() | ||
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| if(BUILD_TESTS) | ||
| _import_aer_system_dependency(Catch2 2.12.1) | ||
| endif() | ||
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| if(APPLE) | ||
| # Fix linking. See https://stackoverflow.com/questions/54068035 | ||
| link_directories(/usr/local/lib) #brew | ||
| link_directories(/opt/local/lib) #ports | ||
| endif() | ||
| endmacro() | ||
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| macro(_import_aer_system_dependency package version) | ||
| # Arguments: | ||
| # package: name of package to search for using find_package() | ||
| # version: version of package to search for | ||
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| find_package(${package} ${version} EXACT QUIET) | ||
| if(NOT ${package}_FOUND) | ||
| message(STATUS "${package} ${version} NOT found! Looking for any other version available.") | ||
| find_package(${package} REQUIRED) | ||
| message(STATUS "${package} version found: ${${package}_VERSION}. WARNING: This version may not work!!!") | ||
| endif() | ||
| string(TOLOWER ${package} PACKAGE_LOWER) # Conan use lowercase for every lib | ||
| add_library(AER_DEPENDENCY_PKG::${PACKAGE_LOWER} INTERFACE IMPORTED) | ||
| target_link_libraries(AER_DEPENDENCY_PKG::${PACKAGE_LOWER} PUBLIC INTERFACE ${package}) | ||
| message(STATUS "Using system-provided ${PACKAGE_LOWER} library") | ||
| endmacro() |
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releasenotes/notes/cmake-optional-conan-bc99a895fc4345e1.yaml
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| --- | ||
| features: | ||
| - | | ||
| Add the CMake flag ``DISABLE_CONAN`` (default=``OFF``)s. When installing from source, | ||
| setting this to ``ON`` allows bypassing the Conan package manager to find libraries | ||
| that are already installed on your system. This is also available as an environment | ||
| variable ``DISABLE_CONAN``, which takes precedence over the CMake flag. | ||
| This is not the official procedure to build AER. Thus, the user is responsible | ||
| of providing all needed libraries and corresponding files to make them findable to CMake. |
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