Build on Linux and UE 4.20 #648

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1. danRobot commented on Jan 17, 2019

   

   danRobot

   on Jan 17, 2019

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   U use UE 4 an python 3.6 and I have exactly the same problem.

   'x86_64-linux-gnu/python3.6m/pyconfig.h' file not found # include <x86_64-linux-gnu/python3.6m/pyconfig.h>
2. mrpropellers commented on Jan 18, 2019

   

   mrpropellers

   on Jan 18, 2019

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   You may need to install the corresponding python3.x-dev package from apt-get.
   sudo apt-get install python3-5-dev or sudo apt-get install python3.5m-dev should install the missing headers for python3.5, same for 3.6 but with python3.6 and python3.6m. I don't remember whether you need the 'm' or not.
3. danRobot commented on Jan 18, 2019

   

   danRobot

   on Jan 18, 2019

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   I forgot to mention that the package in my case is installed and the file pyconfig.h exist, i think that is a code generation like cmake bad config, but i can't link the file
4. BrunoXL commented on Jan 18, 2019

   

   BrunoXL

   on Jan 18, 2019

   Last edited by BrunoXL

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   @mrpropellers install python 3.5-dev doesn't work. Python3.5m-dev package does not exist.

   To me it's the same @danRobot. I do have pyconfig.h installed
   I'm wondering might it be related to clang version?
5. mrpropellers commented on Jan 18, 2019

   

   mrpropellers

   on Jan 18, 2019

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   If the headers exist but they aren't being found on compile then it's likely '/usr/include' isn't in your include path for some reason. You might be able to get away with just adding the line
   PublicIncludePaths.Add("/usr/include");
   to the UnrealEnginePython.Build.cs file in Plugins/UnrealEnginePython/Source/UnrealEnginePython inside the else if (Target.Platform == UnrealTargetPlatform.Linux) conditional (around line ~250). This would be kind of a hack, but worth trying.
6. danRobot commented on Jan 18, 2019

   

   danRobot

   on Jan 18, 2019

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   Thanks for the advice, it works for including pyconfig.h, but it produces a new error:

   /usr/include/locale.h:135:11: fatal error: 'bits/types/locale_t.h' file not found

   I tried to fix it, i install the necessary packages, so got another error:

   __locale_t.h:28:8: error: redefinition of '__locale_struct'

   and noticed that UE has their own libraries definitions. and got in conflict with the rest of files in /usr/include directory, there is a way to include only the file in question? just like PublicIncludePaths.Add("/usr/include/x86_64-linux-gnu/python3.6m/pyconfig.h");(its doesn't work)
7. rozgo commented on Jan 19, 2019

   

   rozgo

   on Jan 19, 2019

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   A quick hack to unblock yourself:
   Symbolic link (in my case /usr/include/x86_64-linux-gnu/python3.6m) into ModuleDirectory (Plugins/UnrealEnginePython/Source/UnrealEnginePython/Include/x86_64-linux-gnu). You will end up with something like this:

   $ ls -lR
   .:
   x86_64-linux-gnu
   ./x86_64-linux-gnu:
   python3.6m -> /usr/include/x86_64-linux-gnu/python3.6m
   

   Then add this path, so pyconfig.h can be found.

   PublicIncludePaths.Add(Path.Combine(ModuleDirectory, "Include"));

   This should avoid adding /usr/include which will conflict with several internal UE4 includes.

   👍React with 👍4Reacted by Bruno Xavier , Mathieu Bernard, friolero and Jaecheol, Sim
8. danRobot commented on Jan 21, 2019

   

   danRobot

   on Jan 21, 2019

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   Thanks, it works for me
9. BrunoXL commented on Jan 22, 2019

   

   BrunoXL

   on Jan 22, 2019

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   @rozgo This worked for me
   Closing the issue...
10. BrunoXL

    closed this as completedon Jan 22, 2019