CMake Error at python

[Victor Lavrent'ev]

Have a nice day, everyone.

I installed a new python (3.11) and now I can't build Alembic (Python 3.10 old version installed in parallel). Is it possible to fix CMakeLists.txt in order to build the library on the old version of Python (3.10)?

-- Found Python3: /usr/local/bin/python3.11 (found version "3.11.0") found components: Interpreter Development Development.Module Development.Embed
-- Found Python 3.11.0
-- Found package Imath using: Imath::PyImath_Python3_11
-- Could NOT find Boost (missing: python311) (found suitable version "1.76.0", minimum required is "1.53.0")
-- Could NOT find Boost (missing: python3.11) (found suitable version "1.76.0", minimum required is "1.53.0")
-- Found Boost: /usr/include (found suitable version "1.76.0", minimum required is "1.53.0")  missing components: python311
-- BOOST INCLUDE DIRS: /usr/include
-- BOOST LIBRARIES:
CMake Error at python/PyAlembic/Tests/CMakeLists.txt:49 (GET_TARGET_PROPERTY):
  get_target_property() called with non-existent target
  "Imath::PyImath_Python3_11".

[Nikita Glukhov]

Hello Victor.

You need to build the Boost library with the Python 3.11 binding:

https://www.boost.org/doc/libs/1_81_0/tools/build/doc/html/index.html#bbv2.reference.tools.libraries.python

Nikita.

чт, 22 дек. 2022 г. в 15:58, Victor Lavrent'ev <victor.l...@gmail.com>:

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[Victor Lavrent'ev]

Read the question carefully. And go after the ship.

чт, 22 груд. 2022 р. о 15:15 Nikita Glukhov <nikita....@gmail.com> пише:

To view this discussion on the web visit https://groups.google.com/d/msgid/alembic-discussion/CAHpVSNtvoFaueMr%3DJh0p3NdV_2DC-A_DQkSrLTQa%3D8rpkjXd3w%40mail.gmail.com.

[Victor Lavrent'ev]

I tried to change the Python version using the methods described in link.

https://stackoverflow.com/questions/15291500/i-have-2-versions-of-python-installed-but-cmake-is-using-older-version-how-do
It did not help, 

cmake -DUSE_PYALEMBIC=ON -DPYTHON_LIBRARY=/lib64/libpython3.10.so.1.0 -DPYTHON_INCLUDE_DIR=/usr/include/python3.10 -DPYTHON_EXECUTABLE=/bin/python3.10 /dev/lib/alembic

-- Found package Imath
CMake Warning at CMakeLists.txt:242 (FIND_PACKAGE):
  By not providing "FindPython3.10.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "Python3.10", but CMake did not find one.

  Could not find a package configuration file provided by "Python3.10" with
  any of the following names:

    Python3.10Config.cmake
    python3.10-config.cmake

  Add the installation prefix of "Python3.10" to CMAKE_PREFIX_PATH or set
  "Python3.10_DIR" to a directory containing one of the above files.  If
  "Python3.10" provides a separate development package or SDK, be sure it has
  been installed.


CMake Warning at CMakeLists.txt:249 (MESSAGE):
  Python not found! Skipping PyAlembic

четвер, 22 грудня 2022 р. о 14:57:59 UTC+2 Victor Lavrent'ev пише:

[Joan Charmant]

Changing the FIND_PACKAGE command in the main CMakeLists.txt to force the version of Python worked for me:

FIND_PACKAGE(Python3 3.10 EXACT COMPONENTS Interpreter Development)

Cheers,

Joan.