Install nngraph

Reference link

• Reference link 1: https://github.com/torch/nngraph/issues/52
• Reference link 2: https://github.com/torch/paths/blob/master/rocks/paths-scm-1.rockspec
• Reference link 3: https://github.com/torch/rocks/blob/master/torch-scm-1.rockspec
• Reference link 4: https://github.com/torch/rocks/blob/master/cwrap-scm-1.rockspec

Various required documents

1.  torch7-master.zip
2.  paths-master.zip
3.  nngraph-master.zip
4.  graph-master.zip
5.  cwrap-master.zip

problem

       stay Ubuntu18.04 Up operation lua The code encountered a lack of nngraph The problem of , Various google Can't find , Only Reference link 1 Kind of Clue . The solution given in the link is as follows

sudo luarocks --from=https://raw.githubusercontent.com/torch/rocks/master/ install nngraph

       This solution is in 2015 Proposed at the end of the year , Now, due to safety reasons, the following problems are reported . But this error tip gives us a little clue to solve the problem .

Solution

1. The one in the middle of the error prompt github The address cannot be downloaded . We are github On the search paths, eureka Reference link 2 The address of , Will the whole torch/paths Download the project (paths-master.zip file ) . And then use unzip paths-master.zip unpack .
2. Get into paths-master Catalog , Use

sudo luarocks make rocks/paths-scm-1.rockspec

Command to compile and install . The final result is as follows

3. Go ahead with the order

sudo luarocks --from=https://raw.githubusercontent.com/torch/rocks/master/ install nngraph

The following errors are still found

This time we will torch-scm-1.rockspec( Reference link 3) and cwrap-scm-1.rockspec( Reference link 4) With the installation .

4. link 3 And link 4 It shows a lot of rocks Two of them , There is no source code . Therefore, it cannot be installed through source code compilation , Check the content carefully , We found its source code address ( because link 3 Installation of depends on link 4, So let's install link 4 Medium cwrap-scm-1.rockspec).
   

5. You can pull... From the command line url Field , You can also enter... In the browser homepage Field to download .

6. When the download is complete （ See Various required documents Medium cwrap-master.zip file ）. Unzip and enter cwrap-master Folder , Enter the command

sudo luarocks make rocks/cwrap-scm-1.rockspec

As follows , installation is complete

7. The same operation gets Reference link 3 Medium torch-scm-1.rockspec Source code （ See Various required documents Medium torch7-master.zip file ）. Unzip and enter torch7-master Folder , Carry out orders

sudo luarocks make rocks/torch-scm-1.rockspec

It's a time-consuming process , Wait patiently for the command to run . The final results are as follows

8. Go ahead with the order

sudo luarocks --from=https://raw.githubusercontent.com/torch/rocks/master/ install nngraph

See what's missing .

9. Sure enough, there are still missing files , We install... From bottom to top
   

10. take grap-scm-1.rockspec Address input browser , We can see its source code address .
    

11. You can also get the source code in two ways （ See Various required documents Medium graph-master.zip file ）. download 、 decompression 、 Get into graph-master Directory and execute the command .

sudo luarocks make rocks/graph-scm-1.rockspec

12. installation is complete
    

13. Find... In the same way nngraph The download address for is https://github.com/torch/nngraph or git://github.com/torch/nngraph.

14. Will download good files （ Or see Various required documents Medium nngraph-master.zip file ） Unzip into nngraph-master Catalog , Use mkdir rocks Create folder , And new rocks/nngraph-scm-1.rockspec file , The content is

package = "nngraph"
version = "scm-1"

source = {
    
   url = "git://github.com/torch/nngraph",
   tag = "master"
}

description = {
    
   summary = "This package provides graphical computation for nn library in Torch7.",
   homepage = "https://github.com/torch/nngraph",
   license = "UNKNOWN"
}

dependencies = {
    
   "torch >= 7.0",
   "graph",
   "nn"
}

build = {
    
   type = "command",
   build_command = [[
cmake -E make_directory build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$(LUA_BINDIR)/.." -DCMAKE_INSTALL_PREFIX="$(PREFIX)" && $(MAKE)
   ]],
   install_command = "cd build && $(MAKE) install"
}

15. stay nngraph-master Execute under directory

sudo luarocks make rocks/nngraph-scm-1.rockspec

install , The installation results are as follows

test

1. Use lua Interactive environment running require 'nngraph' when , The following errors will be reported .
   
2. Use lua5.1 Interactive environment running require 'nngraph' when , The following errors will be reported .
   
   These are two completely different mistakes , Next, study how to solve .