# Error building Pymodbus **URL:** \ **Category:** Legato Linux distribution (Yocto project)\ **Created:** [July 29, 2021, 7:34am UTC](https://forum.legato.io/t/error-building-pymodbus/5913 "2021-07-29T07:34:56Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Pankaj](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/pankaj/32/1317_2.png) [@Pankaj](https://forum.legato.io/u/Pankaj)\ **Post date:** [July 29, 2021, 7:34am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/1 "2021-07-29T07:34:56Z")
Facing error building pymodbus: Initialising tasks: 100% |#######################################| Time: 0:00:00 NOTE: Executing SetScene Tasks NOTE: Executing RunQueue Tasks ERROR: pymodbus-2.5+gitAUTOINC+731b080df0-r0 do\_compile: python setup.py build execution failed. ERROR: pymodbus-2.5+gitAUTOINC+731b080df0-r0 do\_compile: Function failed: do\_compile (log file is located at /home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/build\_bin/tmp/work/armv7a-neon-poky-linux-gnueabi/pymodbus/2.5+gitAUTOINC+731b080df0-r0/temp/log.do\_compile.15160) ERROR: Logfile of failure stored in: /home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/build\_bin/tmp/work/armv7a-neon-poky-linux-gnueabi/pymodbus/2.5+gitAUTOINC+731b080df0-r0/temp/log.do\_compile.15160 Log data follows: | DEBUG: Executing shell function do\_compile | Traceback (most recent call last): | File “setup.py”, line 28, in | from pymodbus.utilities import IS\_PYTHON3 | File “/home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/build\_bin/tmp/work/armv7a-neon-poky-linux-gnueabi/pymodbus/2.5+gitAUTOINC+731b080df0-r0/git/pymodbus/utilities.py”, line 8, in | from pymodbus.compat import int2byte, byte2int, IS\_PYTHON3 | File “/home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/build\_bin/tmp/work/armv7a-neon-poky-linux-gnueabi/pymodbus/2.5+gitAUTOINC+731b080df0-r0/git/pymodbus/compat.py”, line 15, in | import six | ImportError: No module named six | ERROR: python setup.py build execution failed. | WARNING: /home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/build\_bin/tmp/work/armv7a-neon-poky-linux-gnueabi/pymodbus/2.5+gitAUTOINC+731b080df0-r0/temp/run.do\_compile.15160:1 exit 1 from ‘exit 1’ | ERROR: Function failed: do\_compile (log file is located at /home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/build\_bin/tmp/work/armv7a-neon-poky-linux-gnueabi/pymodbus/2.5+gitAUTOINC+731b080df0-r0/temp/log.do\_compile.15160) ERROR: Task (/home/pankaj/Documents/wp76xx-linuxsrc-rel13.1/yocto/meta-openembedded/meta-python/recipes-devtools/python/pymodbus\_2.5.2.bb:do\_compile) failed with exit code ‘1’ NOTE: Tasks Summary: Attempted 655 tasks of which 654 didn’t need to be rerun and 1 failed. Python six is already installed in the image though local.conf IMAGE\_INSTALL\_append\_pn-mdm9x28-image-minimal = " python-six python-paho-mqtt" pymodbus recipe is created using the recipetool in Bitbake command: recipetool -d create -o yocto/meta-openembedded/meta-python/recipes-devtools/python/pymodbus\_2.5.2.bb [GitHub - riptideio/pymodbus: A full modbus protocol written in python](https://github.com/riptideio/pymodbus.git) Attached is the recipe which is giving error . looking for any modifications required to build the recipe [pymodbus\_2.5.2.bb](https://forum.legato.io/uploads/short-url/pYCMBJbSgZAxozx6Qv6bLFgrGg.bb) (4.1 KB) ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [July 29, 2021, 7:40am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/2 "2021-07-29T07:40:00Z")
how about adding the following recipe in ./meta-swi/meta-swi-mdm9x28/recipes-core/images/mdm9x28-image.inc IMAGE\_INSTALL\_append =" pymodbus" ---
**Author:** ![Pankaj](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/pankaj/32/1317_2.png) [@Pankaj](https://forum.legato.io/u/Pankaj)\ **Post date:** [July 29, 2021, 11:00am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/3 "2021-07-29T11:00:44Z")
@jyijyi Will try the suggestion but I think it should not make a difference as "IMAGE\_INSTALL\_append\_pn- **mdm9x28-image-minimal** mentions the correct target to add the recipe. ---
**Author:** ![Pankaj](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/pankaj/32/1317_2.png) [@Pankaj](https://forum.legato.io/u/Pankaj)\ **Post date:** [July 29, 2021, 11:11am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/4 "2021-07-29T11:11:49Z")
In case if python six is not installed I believe Rdepends should take care of providing a error but it doesn’t. Below is the RDEPENDS from the recipe: RDEPENDS\_${PN} += “python-2to3 python-contextlib python-core python-crypt python-distutils python-io python-json python-lang python-logging python-math python-netserver python-setuptools python-shell python-six python-threading python-unittest” ![image](https://us1.discourse-cdn.com/flex019/uploads/legato1/original/2X/a/ac299966f95376cf858fcce4e8d14b81cf6715e0.png) So ideally I should have got a build error with no provider for Python-six , but rather I see error reported on import statement in compat.py I believe may have to add some tasks intially before compiling pymodbus ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [July 29, 2021, 2:52pm UTC](https://forum.legato.io/t/error-building-pymodbus/5913/5 "2021-07-29T14:52:08Z")
I found that I cannot add IMAGE\_INSTALL\_append =" python-pymodbus" it seems it is not officially supported. ---
**Author:** ![billzhou](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@billzhou](https://forum.legato.io/u/billzhou)\ **Post date:** [July 30, 2021, 2:10am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/6 "2021-07-30T02:10:58Z")
Hi Pankaj, If you are trying to make a Modbus master, maybe have a quick read of this wiki link, [https://bitbucket.org/m2mconnectivity/pyrtedoc/wiki/Modbus%20master](https://bitbucket.org/m2mconnectivity/pyrtedoc/wiki/Modbus%20master) If it helps, here is the home of wiki which tries to include Python3 and popular modules(such as pyserial, requests) without rebuilding Linux image for Legato modules/FX30s, [m2mconnectivity / PyRTEdoc / wiki / Home — Bitbucket](https://bitbucket.org/m2mconnectivity/pyrtedoc/wiki/Home) ---
**Author:** ![Pankaj](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/pankaj/32/1317_2.png) [@Pankaj](https://forum.legato.io/u/Pankaj)\ **Post date:** [July 30, 2021, 2:54am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/7 "2021-07-30T02:54:28Z")
@billzhou Yes looking for Modbus master this one looks to be helpful the implementation seems to be based on Minimal Modbus which supports only RTU any suggestions for modbus TCP. ---
**Author:** ![billzhou](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@billzhou](https://forum.legato.io/u/billzhou)\ **Post date:** [July 30, 2021, 9:06am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/8 "2021-07-30T09:06:18Z")
Hi Pankaj, Here pls find the guide on how to install Python modules without rebuilding image and it uses PyModbus as example, [m2mconnectivity / PyRTEdoc / wiki / Install a Python module — Bitbucket](https://bitbucket.org/m2mconnectivity/pyrtedoc/wiki/Install%20a%20Python%20module) Hope it helps. ---
**Author:** ![Pankaj](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/pankaj/32/1317_2.png) [@Pankaj](https://forum.legato.io/u/Pankaj)\ **Post date:** [August 4, 2021, 5:29am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/9 "2021-08-04T05:29:11Z")
@billzhou Can you let me know where do we get the pyrte application? Thanks Pankaj Sant ---
**Author:** ![billzhou](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@billzhou](https://forum.legato.io/u/billzhou)\ **Post date:** [August 4, 2021, 6:41am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/10 "2021-08-04T06:41:48Z")
Hi Pankaj, The download page of PyRTE looks not ready. If you’d need it now, please message me your email, with your FX30/WP model and firmware version, I’d be happy to arrange you the installers. ---
**Author:** ![Pankaj](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/pankaj/32/1317_2.png) [@Pankaj](https://forum.legato.io/u/Pankaj)\ **Post date:** [August 4, 2021, 7:14am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/11 "2021-08-04T07:14:09Z")
@billzhou , you can email me the installers for wp76 rel13.1 firmware on [pankajrsant@gmail.com](mailto:pankajrsant@gmail.com) ---
**Author:** ![billzhou](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@billzhou](https://forum.legato.io/u/billzhou)\ **Post date:** [April 12, 2022, 12:37am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/12 "2022-04-12T00:37:50Z")
The free download page for PyRTE is here if any one needs it, > **[M2M FX30 PyRTE Python solution](https://www.m2mconnectivity.com.au/products-2/m2m-fx30-pyrte-python-solution/)** > > M2M Connectivity has made Sierra Wireless’ iconic FX30 Programmable IoT Gateway available with a new Python Runtime Environment (PyRTE) – developed in Australia Currently it supports FX30 Cat M1 and WP7702. Firmware Release 14. ---
**Author:** ![yuser](https://avatars.discourse-cdn.com/v4/letter/y/ed8c4c/32.png) [@yuser](https://forum.legato.io/u/yuser)\ **Post date:** [June 24, 2022, 12:08pm UTC](https://forum.legato.io/t/error-building-pymodbus/5913/13 "2022-06-24T12:08:42Z")
Hi, I have some similar issue, as I am trying to add Pymodbus to my image as a library I get the following error as building: ```auto ERROR: python3-pymodbus-2.5.3-r0 do_compile: 'python3 setup.py build ' execution failed. ERROR: python3-pymodbus-2.5.3-r0 do_compile: Execution of '/home/usr/reterminal-yocto/build/tmp/work/aarch64-poky-linux/python3-pymodbus/2.5.3-r0/temp/run.do_compile.949277' failed with exit code 1 ERROR: Logfile of failure stored in: /home/usr/reterminal-yocto/build/tmp/work/aarch64-poky-linux/python3-pymodbus/2.5.3-r0/temp/log.do_compile.949277 Log data follows: | DEBUG: Executing shell function do_compile | Traceback (most recent call last): | File "setup.py", line 28, in | from pymodbus.utilities import IS_PYTHON3 | File "/home/usr/reterminal-yocto/build/tmp/work/aarch64-poky-linux/python3-pymodbus/2.5.3-r0/pymodbus-2.5.3/pymodbus/utilities.py", line 8, in | from pymodbus.compat import int2byte, byte2int, IS_PYTHON3 | File "/home/usr/reterminal-yocto/build/tmp/work/aarch64-poky-linux/python3-pymodbus/2.5.3-r0/pymodbus-2.5.3/pymodbus/compat.py", line 15, in | import six | ModuleNotFoundError: No module named 'six' | ERROR: 'python3 setup.py build ' execution failed. | WARNING: exit code 1 from a shell command. | ERROR: Execution of '/home/usr/reterminal-yocto/build/tmp/work/aarch64-poky-linux/python3-pymodbus/2.5.3-r0/temp/run.do_compile.949277' failed with exit code 1 ERROR: Task (/home/jprobst/TUTO_PROPRES/reterminal-yocto/layers/meta-coperametrix-cm4_gui/recipes-modbustcp/modbustcp/python3-pymodbus_2.5.3.bb:do_compile) failed with exit code '1' ``` Here is my python3-Pymodbus\_version.bb file: ```auto SUMMARY = "A fully featured modbus protocol stack in python" HOMEPAGE = "https://github.com/riptideio/pymodbus/" AUTHOR = "Galen Collins " LICENSE = "BSD-3-Clause" LIC_FILES_CHKSUM = "file://LICENSE;md5=2c2223d66c7e674b40527b5a4c35bd76" SRC_URI = "https://files.pythonhosted.org/packages/fe/a9/f98aadfcb8d0a34326be68a06a72cc60e04139e8f4fd17633972f8af3b4c/pymodbus-2.5.3.tar.gz" SRC_URI[md5sum] = "28e8ac7f84adace83319d3733e00dee8" SRC_URI[sha256sum] = "5ef68c1a109bdb467c830ef003ef2db6494349a5248e4af946fe21c9eefe7e74" S = "${WORKDIR}/pymodbus-2.5.3" RDEPENDS_${PN} += "python3-six python3-pyserial" inherit setuptools3 ``` I searched for a long time and have no clue where this error could come from as even when I manually Image\_install\_append six, it still says that I cannot be found. I am not really used to building yocto images yet so I would be really grateful if you could help me understand what I missmade ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [June 25, 2022, 1:29am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/14 "2022-06-25T01:29:44Z")
Hi @billzhou , can you share your bb file ---
**Author:** ![billzhou](https://avatars.discourse-cdn.com/v4/letter/b/ea666f/32.png) [@billzhou](https://forum.legato.io/u/billzhou)\ **Post date:** [June 25, 2022, 2:31am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/15 "2022-06-25T02:31:13Z")
@jyijyi I don’t have a bb file for PyModbus but I can try to give a fix. @yuser Can you please try to add below line in you bb and give it a go? DEPENDS += “python3-six-native” ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [June 25, 2022, 3:53am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/16 "2022-06-25T03:53:42Z")
I just found that we need to add ```auto inherit python3native DEPENDS += "python3-six-native" ``` Here is my bb file and I can make the yocto image: [python3-pymodbus\_2.5.3.bb](https://forum.legato.io/uploads/short-url/4Vxqt8x33Zo2FUZQbOYq4tgFmTh.bb) (700 Bytes) ---
**Author:** ![yuser](https://avatars.discourse-cdn.com/v4/letter/y/ed8c4c/32.png) [@yuser](https://forum.legato.io/u/yuser)\ **Post date:** [June 25, 2022, 12:28pm UTC](https://forum.legato.io/t/error-building-pymodbus/5913/17 "2022-06-25T12:28:47Z")
Hi @billzhou @jyijyi I added your lines ```auto inherit python3native DEPENDS += "python3-six-native" ``` And it also worked fine for me thanks! Do you perhaps have an idea as to why we need to add theses? ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [June 25, 2022, 12:36pm UTC](https://forum.legato.io/t/error-building-pymodbus/5913/18 "2022-06-25T12:36:04Z")
you can see these two webpages: > [https://www.yoctoproject.org/pipermail/yocto/2018-March/040193.html](https://www.yoctoproject.org/pipermail/yocto/2018-March/040193.html) ---
**Author:** ![elmanju07](https://avatars.discourse-cdn.com/v4/letter/e/b5e925/32.png) [@elmanju07](https://forum.legato.io/u/elmanju07)\ **Post date:** [June 9, 2025, 9:07am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/19 "2025-06-09T09:07:58Z")
hi @jyijyi Can i know how to add the MQtt package and build the Yocto image IMAGE\_INSTALL\_append =" MQTT-clientservices" like this and build the Image and flash the .cwe file to the device Thanks and Regards Manju ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\ **Post date:** [June 9, 2025, 9:27am UTC](https://forum.legato.io/t/error-building-pymodbus/5913/20 "2025-06-09T09:27:18Z")
how about using mosquitto? > **[mqttClient Service Connect error?](https://mangoh.discourse.group/t/mqttclient-service-connect-error/9093/87)** > > I tried, but unfortunately this is not the solution either. However, I noticed another thing. I have Mosquitto server installed on windows of another PC and from my Ubuntu I can ping (seeing the connection attempt on the other side): But if I... > **[OpenEmbedded Layer Index - mosquitto](https://layers.openembedded.org/layerindex/recipe/56181/)** Or you can use python: > [@FX30s LTE \[WP7702\] Addition of python recipes](https://forum.legato.io/t/fx30s-lte-wp7702-addition-of-python-recipes/4896/2): > > 1.download the yocto source and go to ./meta-swi/meta-swi-mdm9x28/recipes-core/images/mdm9x28-image.inc 2.add the following line: IMAGE\_INSTALL\_append = " python python-paho-mqtt" 3.go to ./meta-swi/meta-swi-mdm9x28/conf/machine/swi-mdm9x28.conf change UBI\_ROOTFS\_SIZE ?= “48MiB” For the python recipes, you can see [https://layers.openembedded.org/layerindex/branch/morty/layer/meta-python/](https://layers.openembedded.org/layerindex/branch/morty/layer/meta-python/) [Next page](https://forum.legato.io/t/error-building-pymodbus/5913.md?page=2)