[yocto] Install Torch7

[Fabien Lahoudere]

On Thu, 2017-05-18 at 13:34 +0000, Abayiz wrote:
> Dear Fabien and Jussi, 
> 
> Thank you very much for your time and concern. 
> After your suggestion I tried to find out all those packages installed by "bash install-deps".
> However I found that these deps are required to build JIT version of Lua, as mentioned on the
> official Torch website. 

good

> So instead I used Lua 5.2 instead of JIT, which does not require to run "bash install-deps" first.
> And this time after I generated Torch recipe using devtool and tried to build it, the compilation
> proceeded to nearly 96%, then thows an error saying:
> 
> Could NOT find Wget (missing:  WGET_EXECUTABLE)
> | -- Could NOT find MD5 (missing:  MD5_EXECUTABLE)
> | -- curl found instead of wget :/home/abayiz/trunk/poky/build-hello/tmp/work/i586-poky-
> linux/torch/2.1devel+git999-r0/recipe-sysroot-native/usr/bin/curl
> | CMake Error at exe/luajit-rocks/luarocks/CMakeLists.txt:77 (MESSAGE):
> |   MD5 checker not found
> 
> However in the 'devtool' generated recipe file, I found this line:
> 
> # NOTE: unable to map the following CMake package dependencies: CUDA CUDNN BLAS ARM Torch SSE MD5
> MAGMA LAPACK Readline
> Seems like wget is already set as built-time dependency but the system doesn't see it, as well as
> MD5. Do you have any suggestion for that?

maybe wget is needed for host and not target. As they expect "EXECUTABLE", I think it is more a
RDEPENDS needed. Maybe your soft is not cross compilable as is nad should be patches.
You need to understand why tools are necessary and fix accordingly.

> Thank you again. 
> Best.
> 
> 
> On Thursday, May 18, 2017 4:17 PM, Fabien Lahoudere <fabien.lahoudere at collabora.co.uk> wrote:
> 
> 
> On Thu, 2017-05-18 at 12:02 +0000, Abayiz wrote:
> > Dear Fabien, 
> > 
> > Thank you very much for your reply. 
> > No, I didn't try 'devtool edit-recipe torch' to add dependencies. Actually I didn't know how to
> > add them. Is there any way to directly call that .sh file there??
> > Could you give me a minimal example to illustrate it? 
> 
> Usually we add build dependencies with DEPENDS = "..." and runtime dependencies with RDEPENDS =
> "..."
> 
> So you need to check dependencies installed by "bash install-deps".
> Can you list them? Maybe recipes exists in which case you have to add them to the variable
> described
> above.
> 
> 
> 
> > 
> > Thank you. 
> > 
> > 
> > 
> > On Thursday, May 18, 2017 10:17 AM, Fabien Lahoudere <fabien.lahoudere at collabora.co.uk> wrote:
> > 
> > 
> > On Wed, 2017-05-17 at 08:37 +0000, Abayiz wrote:
> > > Dear all, 
> > > 
> > > I'm quite new to Yocto, I've successfully built qemu and ran helloworld example on it. Now I'm
> > > trying to install Torch 7 (https://github.com/torch/torch7) library. What I did is: 
> > > 
> > > devtool add torch https://github.com/torch/torch7.git
> > > devtool build torch
> > > 
> > > But the build exits with error, in the attachment I share the log file with you. 
> > > My host machine runs Ubuntu 16.04 LTS, and Torch7 is successfully running on it. The
> > installation
> > > of Torch first requires to run the 'bash install-deps' command on Ubuntu. My rough estimation
> is
> > > that Yocto seems like cannot build those dependencies automatically. 
> > > 
> > > Could someone give any help on it? Installing Torch7 is very important to my project now,
> thank
> > > you in advance. 
> > > 
> > 
> > Do you try "devtool edit-recipe torch" to add dependencies to the recipe and configure "cache
> > variables" approprietly?
> > 
> > 
> > > Best, 
> > > Abayiz
> > 
> > > 
> > -- 
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> > 
> > 
> 
>