So to hunt down the problem we have to find out why setting up the GL context fails. Therefore, next step is to set the environment variable COIN_GL_NO_CURRENT_CONTEXT_CHECK
Code: Select all
export COIN_GL_NO_CURRENT_CONTEXT_CHECK=1
Code: Select all
export COIN_GL_NO_CURRENT_CONTEXT_CHECK=1
Done:
Code: Select all
.....
SAL_USE_VCLPLUGIN=gtk3
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
MAIL=/var/mail/pi
COIN_GL_NO_CURRENT_CONTEXT_CHECK=1
OLDPWD=/home/pi/freecad-build
TEXTDOMAIN=Linux-PAM
_=/usr/bin/env
Code: Select all
pi@raspberrypi:~/freecad-build/bin $ gdb ./FreeCAD
GNU gdb (Raspbian 8.2.1-2) 8.2.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./FreeCAD...done.
(gdb) run
Starting program: /home/pi/freecad-build/bin/FreeCAD
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
FreeCAD 0.19, Libs: 0.19R18385 (Git)
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2019
##### #### ### ####
# # # # # #
# ## #### #### # # # # #
#### # # # # # # # ##### # #
# # #### #### # # # # #
# # # # # # # # # ## ## ##
# # #### #### ### # # #### ## ## ##
[New Thread 0xad82f210 (LWP 1963)]
using qt5ct plugin
[New Thread 0xa775d210 (LWP 1964)]
D-Bus global menu: no
[New Thread 0xa09bd210 (LWP 1966)]
[New Thread 0x9fdff210 (LWP 1967)]
[New Thread 0x9f3ff210 (LWP 1968)]
D-Bus system tray: no
[New Thread 0x9d1ff210 (LWP 1969)]
connect failed: No such file or directory
Coin warning in cc_glglue_instance(): Error when setting up the GL context. This can happen if there is no current context, or if the context has been set up incorrectly.
Thread 1 "FreeCAD" received signal SIGSEGV, Segmentation fault.
0xaf43fe74 in XDefaultScreenOfDisplay () from /usr/lib/arm-linux-gnueabihf/libX11.so.6
(gdb) bt full
#0 0xaf43fe74 in XDefaultScreenOfDisplay () at /usr/lib/arm-linux-gnueabihf/libX11.so.6
#1 0xb3565ad0 in () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#2 0xb3566454 in glxglue_init () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#3 0xb355f0e0 in cc_glglue_instance () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#4 0xb3410120 in SoGLRenderActionP::isDirectRendering(SoState const*) const () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#5 0xb3412358 in SoGLRenderActionP::render(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#6 0xb34125a0 in SoGLRenderAction::beginTraversal(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#7 0xb340c2fc in SoAction::apply(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#8 0xb5fb1b38 in Gui::SoBoxSelectionRenderAction::apply(SoNode*) (this=0x9b7b68, node=0xe90f28) at /home/pi/freecad-source/src/Gui/SoFCSelectionAction.cpp:1180
__PRETTY_FUNCTION__ = "virtual void Gui::SoBoxSelectionRenderAction::apply(SoNode*)"
#9 0xb60a529c in Gui::View3DInventorViewer::renderScene() (this=0xfaab28) at /home/pi/freecad-source/src/Gui/View3DInventorViewer.cpp:2245
vp = {winsize = {vec = {1650, 638}}, vporigin = {vec = {0, 0}}, vpsize = {vec = {1, 1}}, vporigin_s = {vec = {0, 0}}, vpsize_s = {vec = {1650, 638}}, pixperinch = 72}
origin = {vec = {0, 0}}
size = {vec = {1650, 638}}
col =
{cspec = QColor::Rgb, ct = {argb = {alpha = 65535, red = 60138, green = 58853, blue = 56540, pad = 0}, ahsv = {alpha = 65535, hue = 60138, saturation = 58853, value = 56540, pad = 0}, acmyk = {alpha = 65535, cyan = 60138, magenta = 58853, yellow = 56540, black = 0}, ahsl = {alpha = 65535, hue = 60138, saturation = 58853, lightness = 56540, pad = 0}, array = {65535, 60138, 58853, 56540, 0}}}
glra = 0x9b7b68
state = 0xfa8de0
#10 0xb60a4bb8 in Gui::View3DInventorViewer::actualRedraw() (this=0xfaab28) at /home/pi/freecad-source/src/Gui/View3DInventorViewer.cpp:2128
#11 0xb604775c in SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*) (this=0xfaab28, event=0xbeffcfa0) at /home/pi/freecad-source/src/Gui/Quarter/QuarterWidget.cpp:922
w = 0x10280b0
__PRETTY_FUNCTION__ = "virtual void SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*)"
#12 0xb6050d24 in SIM::Coin3D::Quarter::SoQTQuarterAdaptor::paintEvent(QPaintEvent*) (this=0xfaab28, event=0xbeffcfa0) at /home/pi/freecad-source/src/Gui/Quarter/SoQTQuarterAdaptor.cpp:723
start = 1570212998.821115
#13 0xb287d590 in QWidget::event(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#14 0xb29261bc in QFrame::event(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#15 0xb2b83118 in QGraphicsView::viewportEvent(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#16 0xb604792c in SIM::Coin3D::Quarter::QuarterWidget::viewportEvent(QEvent*) (this=0xfaab28, event=0xbeffcfa0) at /home/pi/freecad-source/src/Gui/Quarter/QuarterWidget.cpp:996
#17 0xb208a090 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5
#18 0xb283ada0 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#19 0xb28432a8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#20 0x010280b0 in ()
(gdb) quit
A debugging session is active.
Inferior 1 [process 1947] will be killed.
Quit anyway? (y or n) y
Code: Select all
Coin warning in cc_glglue_instance(): Error when setting up the GL context. This can happen if there is no current context, or if the context has been set up incorrectly.
Program received signal SIGSEGV, Segmentation fault.
#0 /lib/arm-linux-gnueabihf/libc.so.6(__default_sa_restorer+0) [0xb1a0e120]
QMutex: destroying locked mutex
pi@raspberrypi:~/freecad-build/bin $
Mmm. Honey.
Code: Select all
export COIN_GL_NO_CURRENT_CONTEXT_CHECK=1
./FreeCAD
Code: Select all
COIN_GL_NO_CURRENT_CONTEXT_CHECK=1 ./FreeCAD
Code: Select all
(gdb) set env COIN_GL_NO_CURRENT_CONTEXT_CHECK 1
(gdb) run
To be honest right now I'm eating some chocolate paste
Yes that's what I did, from bash.vocx wrote: ↑Fri Oct 04, 2019 7:00 pmCode: Select all
export COIN_GL_NO_CURRENT_CONTEXT_CHECK=1 ./FreeCAD
Code: Select all
pi@raspberrypi:~/freecad-build/bin $ gdb ./FreeCAD
GNU gdb (Raspbian 8.2.1-2) 8.2.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./FreeCAD...done.
(gdb) set env COIN_GL_NO_CURRENT_CONTEXT_CHECK=1
(gdb) run
Starting program: /home/pi/freecad-build/bin/FreeCAD
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
FreeCAD 0.19, Libs: 0.19R18385 (Git)
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2019
##### #### ### ####
# # # # # #
# ## #### #### # # # # #
#### # # # # # # # ##### # #
# # #### #### # # # # #
# # # # # # # # # ## ## ##
# # #### #### ### # # #### ## ## ##
[New Thread 0xad82f210 (LWP 3687)]
using qt5ct plugin
[New Thread 0xa775d210 (LWP 3688)]
D-Bus global menu: no
[New Thread 0xa09bd210 (LWP 3689)]
[New Thread 0x9fdff210 (LWP 3690)]
[New Thread 0x9f3ff210 (LWP 3691)]
D-Bus system tray: no
[New Thread 0x9d1ff210 (LWP 3692)]
connect failed: No such file or directory
Coin warning in cc_glglue_instance(): Error when setting up the GL context. This can happen if there is no current context, or if the context has been set up incorrectly.
Thread 1 "FreeCAD" received signal SIGSEGV, Segmentation fault.
0xaf43fe74 in XDefaultScreenOfDisplay () from /usr/lib/arm-linux-gnueabihf/libX11.so.6
(gdb) bt full
#0 0xaf43fe74 in XDefaultScreenOfDisplay () at /usr/lib/arm-linux-gnueabihf/libX11.so.6
#1 0xb3565ad0 in () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#2 0xb3566454 in glxglue_init () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#3 0xb355f0e0 in cc_glglue_instance () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#4 0xb3410120 in SoGLRenderActionP::isDirectRendering(SoState const*) const () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#5 0xb3412358 in SoGLRenderActionP::render(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#6 0xb34125a0 in SoGLRenderAction::beginTraversal(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#7 0xb340c2fc in SoAction::apply(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#8 0xb5fb1b38 in Gui::SoBoxSelectionRenderAction::apply(SoNode*) (this=0xa99e08, node=0xf2bae8) at /home/pi/freecad-source/src/Gui/SoFCSelectionAction.cpp:1180
__PRETTY_FUNCTION__ = "virtual void Gui::SoBoxSelectionRenderAction::apply(SoNode*)"
#9 0xb60a529c in Gui::View3DInventorViewer::renderScene() (this=0xfaacf0) at /home/pi/freecad-source/src/Gui/View3DInventorViewer.cpp:2245
vp = {winsize = {vec = {1650, 638}}, vporigin = {vec = {0, 0}}, vpsize = {vec = {1, 1}}, vporigin_s = {vec = {0, 0}}, vpsize_s = {vec = {1650, 638}}, pixperinch = 72}
origin = {vec = {0, 0}}
size = {vec = {1650, 638}}
col =
{cspec = QColor::Rgb, ct = {argb = {alpha = 65535, red = 60138, green = 58853, blue = 56540, pad = 0}, ahsv = {alpha = 65535, hue = 60138, saturation = 58853, value = 56540, pad = 0}, acmyk = {alpha = 65535, cyan = 60138, magenta = 58853, yellow = 56540, black = 0}, ahsl = {alpha = 65535, hue = 60138, saturation = 58853, lightness = 56540, pad = 0}, array = {65535, 60138, 58853, 56540, 0}}}
glra = 0xa99e08
state = 0x1305e18
#10 0xb60a4bb8 in Gui::View3DInventorViewer::actualRedraw() (this=0xfaacf0) at /home/pi/freecad-source/src/Gui/View3DInventorViewer.cpp:2128
#11 0xb604775c in SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*) (this=0xfaacf0, event=0xbeffcfa0) at /home/pi/freecad-source/src/Gui/Quarter/QuarterWidget.cpp:922
w = 0x8c8c10
__PRETTY_FUNCTION__ = "virtual void SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*)"
#12 0xb6050d24 in SIM::Coin3D::Quarter::SoQTQuarterAdaptor::paintEvent(QPaintEvent*) (this=0xfaacf0, event=0xbeffcfa0) at /home/pi/freecad-source/src/Gui/Quarter/SoQTQuarterAdaptor.cpp:723
start = 1570217811.1295891
#13 0xb287d590 in QWidget::event(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#14 0xb29261bc in QFrame::event(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#15 0xb2b83118 in QGraphicsView::viewportEvent(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#16 0xb604792c in SIM::Coin3D::Quarter::QuarterWidget::viewportEvent(QEvent*) (this=0xfaacf0, event=0xbeffcfa0) at /home/pi/freecad-source/src/Gui/Quarter/QuarterWidget.cpp:996
#17 0xb208a090 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5
#18 0xb283ada0 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#19 0xb28432a8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#20 0x008c8c10 in ()
(gdb) quit
A debugging session is active.
Inferior 1 [process 3670] will be killed.
Quit anyway? (y or n) y
pi@raspberrypi:~/freecad-build/bin $
Code: Select all
glra = 0xa99e08
state = 0x1305e18
You can revert your changes again as it appears that these settings are Windows-specific.One comment again: when I had updated the source code with "pull git", I've got an error message about 'Application.cpp' file, because of the modification QT_VERSION_CHECK( 5, 12, 0) -> 5, 11, 0. So, I've modified the file again with QT 5, 12, 0 only during the update.
Code: Select all
export QT_QPA_PLATFORM=xcb
Done:wmayer wrote: ↑Sat Oct 05, 2019 12:14 pm Can you try to set the env. variableCode: Select all
export QT_QPA_PLATFORM=xcb
Code: Select all
pi@raspberrypi:~ $ env
.......
XDG_GREETER_DATA_DIR=/var/lib/lightdm/data/pi
HOME=/home/pi
LANG=en_US.UTF-8
XDG_CURRENT_DESKTOP=LXDE
VTE_VERSION=5402
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
QT_QPA_PLATFORM=xcb
XDG_SESSION_CLASS=user
TERM=xterm-256color
USER=pi
.....
Code: Select all
pi@raspberrypi:~/freecad-build/bin $ gdb ./FreeCAD
GNU gdb (Raspbian 8.2.1-2) 8.2.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./FreeCAD...done.
(gdb) run
Starting program: /home/pi/freecad-build/bin/FreeCAD
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
FreeCAD 0.19, Libs: 0.19R18385 (Git)
© Juergen Riegel, Werner Mayer, Yorik van Havre 2001-2019
##### #### ### ####
# # # # # #
# ## #### #### # # # # #
#### # # # # # # # ##### # #
# # #### #### # # # # #
# # # # # # # # # ## ## ##
# # #### #### ### # # #### ## ## ##
[New Thread 0xad82f210 (LWP 2632)]
using qt5ct plugin
[New Thread 0xa775d210 (LWP 2634)]
D-Bus global menu: no
[New Thread 0xa09bd210 (LWP 2636)]
[New Thread 0x9fdff210 (LWP 2637)]
[New Thread 0x9f3ff210 (LWP 2638)]
D-Bus system tray: no
[New Thread 0x9d1ff210 (LWP 2639)]
connect failed: No such file or directory
[Detaching after fork from child process 2653]
[Detaching after fork from child process 2654]
Coin warning in cc_glglue_instance(): Error when setting up the GL context. This can happen if there is no current context, or if the context has been set up incorrectly.
Thread 1 "FreeCAD" received signal SIGSEGV, Segmentation fault.
0xaf43fe74 in XDefaultScreenOfDisplay () from /usr/lib/arm-linux-gnueabihf/libX11.so.6
(gdb) bt full
#0 0xaf43fe74 in XDefaultScreenOfDisplay () at /usr/lib/arm-linux-gnueabihf/libX11.so.6
#1 0xb3565ad0 in () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#2 0xb3566454 in glxglue_init () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#3 0xb355f0e0 in cc_glglue_instance () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#4 0xb3410120 in SoGLRenderActionP::isDirectRendering(SoState const*) const () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#5 0xb3412358 in SoGLRenderActionP::render(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#6 0xb34125a0 in SoGLRenderAction::beginTraversal(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#7 0xb340c2fc in SoAction::apply(SoNode*) () at /usr/lib/arm-linux-gnueabihf/libCoin.so.80c
#8 0xb5fb1b38 in Gui::SoBoxSelectionRenderAction::apply(SoNode*) (this=0x941488, node=0x1025d88) at /home/pi/freecad-source/src/Gui/SoFCSelectionAction.cpp:1180
__PRETTY_FUNCTION__ = "virtual void Gui::SoBoxSelectionRenderAction::apply(SoNode*)"
#9 0xb60a529c in Gui::View3DInventorViewer::renderScene() (this=0x12cd900) at /home/pi/freecad-source/src/Gui/View3DInventorViewer.cpp:2245
vp = {winsize = {vec = {1650, 638}}, vporigin = {vec = {0, 0}}, vpsize = {vec = {1, 1}}, vporigin_s = {vec = {0, 0}}, vpsize_s = {vec = {1650, 638}}, pixperinch = 72}
origin = {vec = {0, 0}}
size = {vec = {1650, 638}}
col =
{cspec = QColor::Rgb, ct = {argb = {alpha = 65535, red = 60138, green = 58853, blue = 56540, pad = 0}, ahsv = {alpha = 65535, hue = 60138, saturation = 58853, value = 56540, pad = 0}, acmyk = {alpha = 65535, cyan = 60138, magenta = 58853, yellow = 56540, black = 0}, ahsl = {alpha = 65535, hue = 60138, saturation = 58853, lightness = 56540, pad = 0}, array = {65535, 60138, 58853, 56540, 0}}}
glra = 0x941488
state = 0x1349a58
#10 0xb60a4bb8 in Gui::View3DInventorViewer::actualRedraw() (this=0x12cd900) at /home/pi/freecad-source/src/Gui/View3DInventorViewer.cpp:2128
#11 0xb604775c in SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*) (this=0x12cd900, event=0xbeffcf00) at /home/pi/freecad-source/src/Gui/Quarter/QuarterWidget.cpp:922
w = 0x1148af8
__PRETTY_FUNCTION__ = "virtual void SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*)"
#12 0xb6050d24 in SIM::Coin3D::Quarter::SoQTQuarterAdaptor::paintEvent(QPaintEvent*) (this=0x12cd900, event=0xbeffcf00) at /home/pi/freecad-source/src/Gui/Quarter/SoQTQuarterAdaptor.cpp:723
start = 1570393357.2788661
#13 0xb287d590 in QWidget::event(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#14 0xb29261bc in QFrame::event(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#15 0xb2b83118 in QGraphicsView::viewportEvent(QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#16 0xb604792c in SIM::Coin3D::Quarter::QuarterWidget::viewportEvent(QEvent*) (this=0x12cd900, event=0xbeffcf00) at /home/pi/freecad-source/src/Gui/Quarter/QuarterWidget.cpp:996
#17 0xb208a090 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5
#18 0xb283ada0 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#19 0xb28432a8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5
#20 0x01148af8 in ()
(gdb) quit
A debugging session is active.
Inferior 1 [process 2617] will be killed.
Quit anyway? (y or n) y
pi@raspberrypi:~/freecad-build/bin $
Ok, thanks for your help anyway, much appreciated.
Yes, this should be possible. The current master branch still supports Py2 and Qt4.- try to compile Freecad 0.19 with Py2/Qt4?