[R-package] [gpu] CMake-based build on Unix-like fails when providing custom OpenCL library

[jameslamb]

Description and Reproducible Example

Running the following on not-Windows...

Rscript build_r.R \
    --use-gpu \
    --opencl-library=/usr/local/cuda/lib64/libOpenCL.so \
    --opencl-include-dir=/usr/local/cuda/include

Results in the following error

Error in source("install.libs.R", local = local.env) :
install.libs.R:143:77: unexpected string constant
142: # NOTE: build_r.R replaces the line below
143: command_line_args <- c('-DOpenCL_LIBRARY='/usr/local/cuda/lib64/libOpenCL.so''

That should be fixed.

Additional Comments

Created from #5950, see #5950 (comment) for more context.

This was caused by #5607, which tried to fix a similar problem (#5135) for the same process on Windows.

Such issues could be avoided in the future if this installation path was tested in CI: #3780.

[saashaspace]

Hey, is this issue still open or fixed because I couldn't find the code on line 142/143. Is it on line 109?

[jameslamb]

It is still open and unsolved. You can use the reproducible example in the issue description to reproduce the problem on a Unix-like operating system.

[michaelsch7]

Hi, I am experiencing the same exact error running:

Rscript build_r.R \ --use-gpu \ --opencl-library=/usr/lib/x86_64-linux-gnu/libOpenCL.so \ --boost-librarydir=/usr/lib/x86_64-linux-gnu

on Ubuntu 22.04 with an AMD Radeon Pro GPU

Additionally, when I install just using:

Rscript build_r.R --use-gpu

The installation is successful, but the program freezes right before creating the gpu programs, so I figured I needed to pass the other flags when installing as mentioned above. Thanks!