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| 01:21.55 | *** topic/#oe is OpenEmbedded Developer Lounge | Web: http://openembedded.org | Repositories: http://git.openembedded.org/ | Primary Repo Mirrors: https://github.com/openembedded | This is not a distro or machine support channel |
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| 07:16.29 | viky | how to add python-dev headers in yocto |
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| 10:19.49 | wakko | let's say a recipe inherit a class for, then declares DEPENDS = "...", can the class foo appends to DEPENDS even if it's inherited before the declaration ? |
| 10:19.57 | wakko | s/for/foo/ |
| 10:21.05 | viky | while installing python-dev i am getting the below error:https://pastebin.com/raw/m1urRTjA |
| 10:22.06 | LetoThe2nd | wakko: nope. evaluation order is top to bottom in the recipe, AFAIK. |
| 10:23.49 | wakko | so DEPENDS_append/prepend is no help here ? |
| 10:24.06 | LetoThe2nd | wakko: not inside the class |
| 10:24.14 | wakko | got it thanks ! |
| 10:25.14 | wakko | too bad a recipe can break a class if it rewrites the DEPENDS and override a python-thingamiga-native |
| 10:26.03 | wakko | many class adds DEPENDS on python native modules |
| 10:26.12 | LetoThe2nd | viky: have you actually read the error msg and the link it contains? this is at most indirectly OE related (plus the fact that you should try to package the thing instead of installing in-target) |
| 10:26.29 | LetoThe2nd | viky: and please, do not crosspost. |
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| 10:45.48 | wakko | i think i misunderstood something, in a class i added DEPENDS += "python-lxml-native", even so the python code from the class cannot "from lxml import etree" do i have to install this module on the host ? |
| 10:47.17 | LetoThe2nd | wakko: the -native suffix means that it depends on it during compile time, on the build host. if you want it in target at compile time, remove the suffix. if you want it in target at runtime, add it to RDEPENDS. |
| 10:48.40 | wakko | it depends on it during populate_packages_prepend, so i think the -native suffix is necessary |
| 10:49.06 | LetoThe2nd | wakko: no, thats not exactly true. |
| 10:49.09 | wakko | even so the python code in the class fails at importing it |
| 10:49.18 | LetoThe2nd | wakko: i guess it actually is wrong. |
| 10:49.44 | wakko | populate_packages_prepend is not executed on the build host ? |
| 10:50.17 | LetoThe2nd | wakko: think architectures. if you build for arm, on x86. then -native means it is something that runs on x86, on your host. without -native, it is for arm. |
| 10:50.29 | wakko | sure |
| 10:51.27 | LetoThe2nd | populate_packages_prepend is of course executed on the host. but is it something that actually *works* on the host? or is it rather some packageing tool, that stitches up your target payload? |
| 10:52.02 | wakko | it splits my ipk into many ipk based on an xml file |
| 10:52.20 | LetoThe2nd | wakko: and it actually is python code that runs on your host? |
| 10:52.25 | wakko | yes |
| 10:52.28 | wakko | it's a bitbake class |
| 10:53.23 | wakko | you really lost me here :) |
| 10:53.44 | wakko | it's python code in a .bbclass |
| 10:54.07 | LetoThe2nd | ah. ok, here we're pretty much leaving my knowledgebase. but i *THINK* it might be that bitbake tasks are in not running in the host sysroot or such. i guess your problem has something to do with that then. |
| 10:54.40 | LetoThe2nd | yeah sorry for the confusion. |
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| 10:55.23 | wakko | this would explain the problem, remains the question, is it normal ? and should i install this module on the build host ? it will work but it's less elegant (self-contained) to me |
| 10:55.35 | LetoThe2nd | wakko: yeah you |
| 10:56.07 | wakko | yeah me ? |
| 10:56.09 | wakko | :) |
| 10:56.20 | LetoThe2nd | you're right, this should not be necessary. you're probably just doing some little thing in an unexpected way, but unfortunately this is not something i can help you with. |
| 10:56.35 | wakko | no problem |
| 10:56.45 | wakko | thanks for the help |
| 10:57.14 | LetoThe2nd | you can try and poke at it through the recipes devshell i think. plus, maybe write a concise mail to the oe-devel list, maybe including an example snippet. |
| 10:57.50 | wakko | i'll do |
| 10:57.55 | LetoThe2nd | good luck then. |
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| 14:00.10 | kergoth | wakko: python code in a bitbake function can't import python modules from the host sysroot. either run an external python script after inheriting the appropriate classes, or manually manipulate sys.path to add it |
| 14:01.55 | wakko | or add it to SANITY_REQUIRED_UTILITIES ? :) |
| 14:03.19 | wakko | manipulating PYTHON_PATH sounds like a good option but still no one knows if host python version is the same than native version... |
| 14:04.22 | kergoth | yeah, that's a definite concern |
| 14:04.29 | kergoth | i'd just make it an external script and run it. |
| 14:04.35 | kergoth | could still keep it in the layer if you like |
| 14:04.59 | wakko | ok |
| 14:05.18 | kergoth | shrugs |
| 14:05.50 | kergoth | i've done similar things before, calling out to external utility scripts for various reasons, clarity, reuse outside of bitbake, python version issues, .. |
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| 14:06.34 | wakko | i just need to parse an xml at the end, so writing a little script that outputs something easily understandable in pure python looks fine to me |
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| 23:01.06 | romua1d | Chromium needs a gcc which know stdc++14 on the host (gn compilation). |
| 23:01.14 | romua1d | But the host where I want to build chromium has a old version of gcc and I have not rigths to upgrade the Linux distribution. |
| 23:01.37 | romua1d | Is there a way to include a recent version of gcc inside the SDK and to use it during the build. |
| 23:02.27 | bluelightning | romua1d: not really... I would suggest using a container if that's possible on your infrastructure |
| 23:04.14 | romua1d | ok, thanks for the fast response |
| 23:06.23 | romua1d | But I'm very desapointed because for me the SDK should be (the most) independant from the host. |
| 23:08.40 | bluelightning | we do rely on the host for host-side compilation; we only handle cross-compilation in the SDK |
| 23:10.38 | romua1d | ok, I understand from this point of view |
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