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3939 :: Nim not obeying switches in nim.cfg or config.nims

• jyapayne (orginal) [2018-06-18T13:49:51+02:00] view original

  I've hit another small roadblock on my quest to port the Nintendo Switch NX library to Nim. I've finally got everything compiling to an elf file properly if I use:

  
  nim c --os:nintendoswitch --cpu:armv8a57 libnx.nim
  Run

  Bam, everything runs fine, it uses the correct compiler (aarch64-none-elf-gcc), and everything compiles up nicely.

  However, if I take those switches and either put them in a nim.cfg or a config.nims file like so:

  
  --os="nintendoswitch"
  --cpu="armv8a57"
  Run

  or

  switch("os", "nintendoswitch")
  switch("cpu", "armv8a57")
  Run

  Then the compilation fails because it uses gcc as the compiler. Is this the same behavior if compiling to another OS? Am I doing something wrong with the nim config files?

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• chemist69 (orginal) [2018-06-18T14:54:10+02:00] view original

  I think, the configuration file has to have the same name as the nim file:

  Either libnx.nim.cfg or linbx.nims.

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• DeletedUser (orginal) [2018-06-18T18:59:42+02:00] view original

  The reason for this is that nim.cfg overwrites the default Nim configuration which is what Nim gets the compiler to use from, and <package>.nim.cfg adds on to it for that package

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• jyapayne (orginal) [2018-06-19T03:19:36+02:00] view original

  Thank you for the suggestion guys! However, even after renaming the config files (tried both libnx.nim.cfg and libnx.nims), it still doesn't work. Any suggestions?

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• Arrrrrrrrr (orginal) [2018-06-19T09:31:18+02:00] view original

  What's your directory hierarchy?

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• Araq (orginal) [2018-06-19T10:08:02+02:00] view original

  The default configuration is read before your local configuration so when you set the os in the local configuration the default configuration doesn't change the C compiler anymore. We could read the default config as the last step but then a line like cc = gcc in the default config would overwrite your default C compiler. Defaults then could not be set in the default config file...

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• Arrrrrrrrr (orginal) [2018-06-19T20:48:03+02:00] view original

  Once you finish you should write a blog post detailing how was the process to make it work.

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• jyapayne (orginal) [2018-06-20T07:29:51+02:00] view original

  @Arrrrrrrrr Directory structure is:

  
  libnx.nims
  libnx.nim
  src/...
  Run

  You mean a blog post on how I got the compiler to support the Nintendo Switch?

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• jyapayne (orginal) [2018-06-20T07:30:11+02:00] view original

  @Araq, I see, so it's one of those catch 22's. That's fine I'll find another way. Specifying --os:nintendoswitch isn't that big of a deal anyway.

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