Compile w/Py3 & Qt5 for Dummies

[triplus]

I still use Pivy package provided from here:

https://forum.freecadweb.org/viewtopic. ... 60#p178315

P.S. Thanks @looo.

[wandererfan]

I finally built master with Py3 and Qt5...

You shouldn't need the first 3 steps, but I didn't succeed without them.

• upgrade OS to ubuntu 18/Mint 19
• add PPA "deb http://ppa.launchpad.net/freecad-mainta ... ily/ubuntu bionic main" to your package manager sources.
• install FreeCAD Python3 from PPA
• you can try installing Qt5.11.x from www.qt.io/download and Pyside2/Shiboken from wiki.qt.io/Qt_for_Python, but I had no luck using these.

Make a build dir, then in cmakeGui:

• source = your FreeCAD source dir
• target = your FreeCAD build dir
• run cmake "configure" - expect lots of errors. don't worry.
• tick BuildQt5
• untick all unneeded modules
• -- BuildWeb causes compile errors
• -- I used a bare minimum of Workbenches - no Path, no Fem, no Ship, etc
• select OCC version (official)
• run cmake "generate" - more errors. don't worry.
• update Qt5 dir variables (eg "/usr/lib/x86_64-linux-gnu/qt5.11/5.11.1/gcc_64/lib/cmake/Qt5Concurrent"
• update Qt5WebkitWidgets and Qt5Webkit variables to system Qt5 (eg "/usr/lib/x86_64-linux-gnu/cmake/Qt5WebKitWidgets")
• update PythonBaseName (eg ".cpython-36m-x86_64-linux-gnu")
• update PythonConfigSuffix (eg ".cpython-36m-x86_64-linux-gnu")
• update Boost_Python36_Library* (eg "/usr/lib/x86_64-linux-gnu/libboost_python3-py36.so")
• update Boost_Python3_Library* (eg "/usr/lib/x86_64-linux-gnu/libboost_python3.so")
• set build type (release or debug)
• run "generate" - if there are errors here, check for typos (py35 instead of py36, etc)
• switch to build directory
• run "make - jX" where X is the number of cores to use
• wait
• run "./FreeCAD -l"
  
  FreeCAD will start.
  
  OS: Linux Mint 19
  Word size of OS: 64-bit
  Word size of FreeCAD: 64-bit
  Version: 0.18.15253 (Git)
  Build type: debug
  Branch: master
  Hash: 73df4e6fc0ed90a30e5958232dbc737d8a47e492
  Python version: 3.6.7
  Qt version: 5.11.1
  Coin version: 4.0.0a
  OCC version: 7.2.0
  Locale: English/Canada (en_CA)

[wmayer]

update PythonBaseName (eg ".cpython-36m-x86_64-linux-gnu")

It looks like this variable was used in the past with the old shiboken/PySide version. But with Qt5 + shiboken2 + PySide2 it seems to be not used any more.

update PythonConfigSuffix

With git commit 1dded002ca CMake is supposed to automatically set this value. Have a look at the CMake output.

[Kunda1]

@wandererfan why not OCC 7.3.0?

[wandererfan]

@wandererfan why not OCC 7.3.0?

I have both installed - locally compiled 7.2 and 7.3 from the FC PPA. cMake found 7.2 and that was good enough for determining if I could build Py3/Qt5.

I don't seem to have an OpenCASCADEConfig.cmake file for 7.3, just the libraries for FreeCAD-Python3.

[wandererfan]

update PythonBaseName (eg ".cpython-36m-x86_64-linux-gnu")

It looks like this variable was used in the past with the old shiboken/PySide version. But with Qt5 + shiboken2 + PySide2 it seems to be not used any more.

update PythonConfigSuffix

With git commit 1dded002ca CMake is supposed to automatically set this value. Have a look at the CMake output.

If I blank out PythonBaseName and PythonConfigSuffix and run generate, I get this in the output:

Code: Select all

-- Found OCE/OpenCASCADE version: 7.2.0
-- OCE/OpenCASCADE include directory: /usr/local/include/opencascade
-- OCE/OpenCASCADE shared libraries directory: /usr/local/lib
Checking for module 'Coin'
  No package 'Coin' found
Shiboken2Config: Using default python: -python2.7.x86_64-linux-gnu <<<<<<<<<<<<
libshiboken built for Release
PYTHON_CONFIG_SUFFIX: .cpython-36m-x86_64-linux-gnu
libshiboken built for Release
-- matplotlib-2.1.1 has been found.

but the result is using py3.6.

OS: Linux Mint 19
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.15286 +3 (Git)
Build type: debug
Branch: DraftPy3
Hash: f19250b60d77c9812c811e19b6a66f7d23b3a8b5
Python version: 3.6.7
Qt version: 5.11.1
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/Canada (en_CA)

[wmayer]

Shiboken2Config: Using default python: -python2.7.x86_64-linux-gnu <<<<<<<<<<<<

This is expected because for the first run the variable is empty and Shiboken2Config.cmake sets a default value.
But starting from this CMake determines the matching value for PYTHON_CONFIG_SUFFIX.

See the output below:

PYTHON_CONFIG_SUFFIX: .cpython-36m-x86_64-linux-gnu
libshiboken built for Release

It would be good if there was a way to suppress the output of Shiboken2Config.cmake to avoid the confusion.

[sgrogan]

I don't seem to have an OpenCASCADEConfig.cmake file for 7.3, just the libraries for FreeCAD-Python3.

You need to install the occt-dev packages from the PPA.

[wandererfan]

You need to install the occt-dev packages from the PPA.

Had most of them. Was missing occt-misc.

There are 2 occt-misc packages when I look at the ppa. Is one supposed to be occt-misc-dev?

[kkremitzki]

You need to install the occt-dev packages from the PPA.

Had most of them. Was missing occt-misc.

There are 2 occt-misc packages when I look at the ppa. Is one supposed to be occt-misc-dev?

Where do you see the second one?