CMake Error at /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:108 (message):
Could NOT find PythonLibsUnix (missing: PYTHON_LIBRARY PYTHON_LIBPATH
I am using Ubuntu 14.04, with the system python installs (3.4.3 and 2.7.6). I am expected to specify manually these environment variables (if they are that)? Or it’s something else? If the former, what are the standard paths for these?
Maybe you are missing the python development libraries
apt-get install python-dev
If it isn’t finding the python files then you will need to tell it where they are.
If you have checked out the current master then it would be looking for python 3.5 as this has recently been setup to be the default for the next release, you can still set it to 3.4 for now as I don’t think any 3.5 specific code changes have happened yet. If you downloaded a release tarball then it should be looking for 3.4 (unless you have an older source copy)
This will solve your issue
sudo apt-get build-dep blender
similar compile time dependency problems for other applications can be solved by doing this
By cherry picking from the list of packages above cmd wants to install, you probably need just these :
sudo apt-get install libpython3-dev libpython3.4-dev
although allowing the
build-dep cmd to run will jack up otherwise disabled features you may want in blender
For compilation, you have to point to Python3:
cmake -DPYTHON_LIBRARY=/usr/bin/python3.4m -DPYTHON_INCLUDE_DIR=/usr/include/python3.4m ..
claims that the following syntax will "re-define [all PYTHON_* variables] based on your Python prefix"
cmake ./ ../blender -U PYTHON* -D PYTHON_ROOT_DIR=/opt/my_python
and i think this should be the equivalent of passing these settings into blender 3.0’s makefile
BUILD_CMAKE_ARGS=-U PYTHON* -D PYTHON_ROOT_DIR=$PWD/my-path-to/Python-3.9.9/ make
but i still get
CMake Error at /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message):
Could NOT find PythonLibsUnix (missing: PYTHON_LIBRARY PYTHON_INCLUDE_DIR
so idk, maybe this is an obsolete doc
My distro ( Devuan ) doesn’t yet offer python3.10. I compiled and installed it in a custom directory so as not to affect existing python installations.
Find the python version you need and download it from
Expand it in a working directory ( ok to delete later ):
tar -xf Python-3.10.8.tgz
now configure python to build with custom paths ( here I’m using ~/blenderpython )
export set BLENDERPYTHONDIR=/home/`whoami`/blenderpython
./configure --enable-optimizations --prefix=$BLENDERPYTHONDIR
make -j 4
Add required packages:
./pip3 install numpy;
./pip3 install requests;
./pip3 install zstandard;
./pip3 install cython;
./pip3 -vvv list # to see installed and where.
# i.e. all installed in ~/blenderpython/lib/python3.10/site-packages
Now go to your blender source.. in home dir?
and try building again specifying your new python
BUILD_CMAKE_ARGS=-DPYTHON_EXECUTABLE=$BLENDERPYTHONDIR/bin/python3.10 -DPYTHON_LIBRARY=$BLENDERPYTHONDIR/lib/libpython3.10.a -DPYTHON_INCLUDE_DIR=$BLENDERPYTHONDIR/include/python3.10/ make full
note there are two backslashed spaces in the command above.
note PYTHON_EXECUTABLE and PYTHON_LIBRARY point to files. PYTHON_INCLUDE_DIR points to… a dir.