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cmake: python: use system pybind11 if installed #5092

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Jul 8, 2020
Merged

cmake: python: use system pybind11 if installed #5092

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16 changes: 10 additions & 6 deletions python_bindings/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -7,16 +7,20 @@ find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
# Adding PyBind11 to the build is the recommended way of integrating with CMake.
# See: https://pybind11.readthedocs.io/en/stable/compiling.html

# Keep the version in sync with requirements.txt and the Ubuntu 20.04 LTS package (python3-pybind11)
include(FetchContent)
FetchContent_Declare(pybind11 GIT_REPOSITORY https://github.com/pybind/pybind11.git GIT_TAG v2.4.3)

# Configure pybind11 to use the same interpreter version as was detected above.
message(STATUS "Directing pybind11 to Python3 executable ${Python3_EXECUTABLE}")
set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})

# Import PyBind11
FetchContent_MakeAvailable(pybind11)
# Keep the version in sync with requirements.txt and the Ubuntu 20.04 LTS package (python3-pybind11)
set(PYBIND11_VER 2.4.3)
find_package(pybind11 ${PYBIND11_VER} QUIET)
if (NOT pybind11_FOUND)
include(FetchContent)
FetchContent_Declare(pybind11
GIT_REPOSITORY https://github.com/pybind/pybind11.git
GIT_TAG v${PYBIND11_VER})
FetchContent_MakeAvailable(pybind11)
endif ()

##
# Add our sources to this sub-tree.
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