[SOLVED] Help with ebuild for luarocks torch-opencv

[archenroot]

Hi guys, could someone help me with lua rock file conversion into ebuild file?

here is the build snippet from luarocks file:

[kikko]

Hi archenroot
I'll try to give you some hints... I'm not so expert in ebuild writing (expecially with cmake involved...), but I hope this can help you:

• src_configure part
  

  Code:

  build = {    type = "command",    build_command = [[

  ignore this
  ------------------------
  

  Code:

  cmake -E make_directory build;

  This is equivalent to

  Code:

  mkdir build

  
  ------------------------
  

  Code:

  cd build; cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$(LUA_BINDIR)/.." -DCMAKE_INSTALL_PREFIX="$(PREFIX)";

  This seems to descend into the build directory and launch cmake on the upper folder
  You can try to do the same in the src_configure phase of your ebuild, maybe you can use the cmake utils eclass
  ------------------------
  
• src_compile part
  

  Code:

  $(MAKE) -j5

  This will launch make -j5 from the build directory? I think emake can do the same (from src_compile)
  ------------------------
  

  Code:

  ]],    install_command = "cd build && $(MAKE) install -j5" }

  Again, this will make install -j5 from build dir? You can try to set emake install in src_install

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[fedeliallalinea]

You can try to modify one of these ebuilds.
You need also add one of archenroot or TAJJADA overlay for have torch7-9999 that it's dependency of torch-opencv.
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[archenroot]

Thanks for hints guys!

Actually I archenroot overlay is mine , there is still lots of work here
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[fedeliallalinea]

[archenroot]

Ok, I will look into docs and will post the finished ebuild for you guys, if you can check.

This ebuild will also help me for all the utilities inside FBLuaLIB and THPP for multipath networking support in neural networks.

Thanks for suggestions.

Ladislav
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Emperor wants to control outer space Yoda wants to explore inner space that's the fundamental difference between good and bad sides of the Force

[archenroot]

Hi guys,

if you will have minute, could you please check some finalized ebuilds. There is pure LUA only and LUA + C based LUA modules from Torch stack:
https://github.com/archenroot/gentoo-overlay/blob/master/dev-lua/torch-class/torch-class-9999.ebuild
https://github.com/archenroot/gentoo-overlay/blob/master/dev-lua/torch-cwrap/torch-cwrap-9999.ebuild
https://github.com/archenroot/gentoo-overlay/blob/master/dev-lua/torch-paths/torch-paths-9999.ebuild

Thanks for comments here.

2 things I still need more to understand:

I am not sure about lua vs luajit - even when I switch USE flag to luajit, following command still returns the same directory:


Code:

-DLUADIR=$($(tc-getPKG_CONFIG) --variable INSTALL_LMOD $(usex luajit 'luajit' 'lua'))


I am not sure if this is bug or expected behavior

The mapping between variables retreived via pkg-config (INSTALL_LMOD, etc...) to LUA variables. But in this case it will be better to talk directly to Torch guys about their coding standards..

Again thanks for any hints and comments.

Ladislav
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Emperor wants to control outer space Yoda wants to explore inner space that's the fundamental difference between good and bad sides of the Force

[kikko]

Hi archenroot,
I've already begun to look at the ebuilds, but first of all... why use the "COMMON_DEPEND" variable?
Since those ebuilds run using Lua, I think "lua|luajit" can fit into the RDEPEND variable directly (more info here)

Second: what are you trying to get using this:

[archenroot]

Thank you for your suggestions first of all!

1. Well, I studied Dev guide and also existing LUA ebuilds in Gentoo stable tree, where I found usage of COMMON_DEPEND in most cases used as:

[archenroot]

I also had an idea about creating some Gentoo wrapper for Luarocks. As soon as there are all these Lua applications/frameworks available in *.rock format, such wrapper could just execute it in Gentoo way, but not sure if that is good idea to investigate...
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Emperor wants to control outer space Yoda wants to explore inner space that's the fundamental difference between good and bad sides of the Force

[archenroot]

Just posting here the completed build working:
https://github.com/archenroot/gentoo-overlay/blob/master/sci-libs/torch-opencv/torch-opencv-9999.ebuild
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Emperor wants to control outer space Yoda wants to explore inner space that's the fundamental difference between good and bad sides of the Force