[yocto] Install Torch7

[Abayiz]

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. 
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
DEPENDS = "wget jpeg ncurses libpng"

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?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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