[GitHub] wittyalias opened a new issue #14004: unable to load mxnet library in R

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wittyalias opened a new issue #14004: unable to load mxnet library in R
URL: https://github.com/apache/incubator-mxnet/issues/14004
 
 
   Possibly related to the issues in [#13952](https://github.com/apache/incubator-mxnet/pull/13952). 
   
   I've followed the [instructions ](https://mxnet.incubator.apache.org/versions/master/install/index.html?platform=MacOS&language=R&processor=CPU) to install CPU version of MXNet for R on MacOS (10.14.2). 
   I successfully install openblas (0.3.5) and opencv (4.0.1) via brew using
   ```
   brew install opencv
   brew install openblas
   ```
   Also, added the symbolic links as suggested (this is a different openblas version that I have installed):
   ```
   ln -sf /usr/local/opt/openblas/lib/libopenblas.dylib /usr/local/opt/openblas/lib/libopenblasp-r0.3.1.dylib
   ```
   And then installed the package within R with:
   ```
   cran <- getOption("repos")
   cran["dmlc"] <- "https://apache-mxnet.s3-accelerate.dualstack.amazonaws.com/R/CRAN/"
   options(repos = cran)
   install.packages("mxnet")
   ```
   
   ## Description
   When I try to load the mxnet library I get an error message below
   
   ```
   >library(mxnet)
   Error: package or namespace load failed for ‘mxnet’:
    .onLoad failed in loadNamespace() for 'mxnet', details:
     call: dyn.load(file, DLLpath = DLLpath, ...)
     error: unable to load shared object '/Library/Frameworks/R.framework/Versions/3.5/Resources/library/mxnet/libs/libmxnet.so':
     dlopen(/Library/Frameworks/R.framework/Versions/3.5/Resources/library/mxnet/libs/libmxnet.so, 10): Library not loaded: /usr/local/opt/openblas/lib/libopenblasp-r0.3.1.dylib
     Referenced from: /Library/Frameworks/R.framework/Versions/3.5/Resources/library/mxnet/libs/libmxnet.so
     Reason: image not found
   ```
   
   ## Environment info (Required)
   I'm using R in RStudio 1.1.463
   ```
   R version 3.5.2 (2018-12-20)
   Platform: x86_64-apple-darwin15.6.0 (64-bit)
   Running under: macOS Mojave 10.14.2
   
   Matrix products: default
   BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
   LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib
   
   locale:
   [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
   
   attached base packages:
   [1] stats     graphics  grDevices utils     datasets  methods  
   [7] base     
   ```
   
   ## What have you tried to solve it?
   
   1. My guess is that its looking for different versions of openblas and opencv than I have installed, so I tried to install a previous versions of them via brew, but I can't figure out how to do it for openblas and 3.4 opencv installs to a folder 'opencv@3' - so the library won't be able to find it anyway. 
   
   I did not change the symbolic link because before I had the openblas 0.3.1 error, I had a very similar looking error that said it couldn't find opencv 3.4.
   
   I was thinking of cloning the repository and seeing if I could change what openblas and opencv versions mxnet looks for, but that seems like a lot of work for something that you may already be looking into. 
   
   

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