vabe1
September 7, 2021, 8:41pm
1
Hi,
I’ve been trying to build the Python PluginExample on Ubuntu 18.04.
Now I’m at a point where I don’t know what to do next since I get the “segmentation fault ” error and nothing more. (see the log below )
Could you help me out?
System info:
Ubuntu 18.04.5 LTS
Thank you in advance for you help,
Log:
2021-09-03 09:59:27.434885 ; Session ; Debug ; Session log loaded as ‘/home/testusr/.tap/SessionLogs/tap 2021-09-03 09-59-26.txt’. [8.98 ms]
3 Likes
Welcome to the OpenTAP Forum @vabe1 ! Great to have you engaged…especially wrt Python! Expect some of the community to engage shortly!
@vabe1 the major focus of our 2.3 release for the Python Plugin is around providing better support on Linux. You can follow that work here:
In the meantime, here are a few scripts that will get everything set up properly. The first one handles the Python configuration (it uses Python 3.7, but you can edit for any version):
#!/bin/bash -x
sudo apt-get update; sudo apt-get install -y libc6-dev libunwind8 unzip git curl lsb
# Installing python3.7
sudo apt install python3.7 python3.7-dev python3-pip -y
python3.7 -m pip install pip
# sudo ln -s /usr/bin/python3.7 /usr/bin/python
PYTHON_VER=$(python3.7 --version | grep -oP "(\d.*)" )
PYTHON_VER_MAJOR_MIN=$(python3.7 --version | grep -oP "(\d\.\d)")
echo -e "${GREEN}Found Python ${PYTHON_VER_MAJOR_MIN} [${PYTHON_VER}]${NC}"
# Installing OpenTAP Python SDK Plugin
$OPENTAP_PATH/tap package install Python
if [ $? -ne 0 ]; then
echo -e "${RED}Unable to install OpenTAP Python SDK!${NC}"
exit 2
fi
# Setup Python SDK for OpenTAP
PYTHON_DYNLIB="/usr/lib/python${PYTHON_VER_MAJOR_MIN}/config-${PYTHON_VER_MAJOR_MIN}m-x86_64-linux-gnu/libpython${PYTHON_VER_MAJOR_MIN}.so"
PYTHON_PLUGIN="/usr/local/lib/pythonplugin"
PYTHON_PLUGIN_LIB="/usr/local/lib/pythonplugin/libpython${PYTHON_VER_MAJOR_MIN}.so"
[ -f ${PYTHON_PLUGIN_LIB} ] && sudo rm ${PYTHON_PLUGIN_LIB}
[ ! -d ${PYTHON_PLUGIN} ] && sudo mkdir -p ${PYTHON_PLUGIN}
sudo ln -s $PYTHON_DYNLIB ${PYTHON_PLUGIN_LIB}
$OPENTAP_PATH/tap python set-path ${PYTHON_PLUGIN} ${PYTHON_VER_MAJOR_MIN}
The second is to work around a bug that targets Windows instead of Linux .tap python build PluginExample.
You can run it using: sudo ./build_package.sh PluginExample:
#!/bin/bash -x
PACKAGE=$1
sudo tap python build $PACKAGE
sudo tap python build $PACKAGE -b
sudo sed -iE 's;File Path=".*Packages/Python;File Path="Packages/Python;' Packages/Python/$PACKAGE/package.xml
sudo sed -iE 's;OS=\".*\" ;;' Packages/Python/$PACKAGE/package.xml
sudo sed -iE 's;<Package ;<Package OS="Linux" ;' Packages/Python/$PACKAGE/package.xml
sudo tap package create Packages/Python/$PACKAGE/package.xml
opentap_python_setup.sh (1.1 KB)build_package.sh (417 Bytes)
1 Like
@vabe1 -
Seg Fault usually means one of the native / C packages are missing (lsb is commonly missed) :
sudo apt-get update; sudo apt-get install -y libc6-dev libunwind8 unzip git curl lsb
Could also be the python*-dev package (thats where some of the interop happens) :
sudo apt install python3.7-dev -y
If you think of other ways to improve the install scripts, let us know!
3 Likes
vabe1
September 10, 2021, 8:39pm
5
Thank you Alan and Brennen.
“lsb” was missing, but I still get the segmentation fault.
Today I fixed the dotnet-skd snap permissions following this post:Cannot run dotnet command after installing 5.0 preview using snap · Issue #4446 · dotnet/core · GitHub
I also uninstalled and reinstalled the Python package.
Do I need to download any other packages (SDK, etc.) ?
Should I reinstall OpenTap altogether since the snap permissions might have corrupt anything?
@vabe1 are you on Ubuntu 20.04? At this point we only support 18.04, and that segmentation fault seems to be a dotnet issue that appears specifically on 20.04 that we are working to solve.
EDIT: Nevermind. I see above you say 18.04. My recommendation is that now that yo have the dotnet issue resolved, to delete/rename your .tap directory and rerun the install script.