Unable to install CPLEX on Ubuntu Distrobox

[karlfroldan]

I am trying to install CPLEX on my ubuntu distrobox installation (I am running Fedora on host so I needed distrobox to run cplex).

I have the academic license of CPLEX and able to run the IDE and use it with Python.

I set

julia> ENV["CPLEX_STUDIO_BINARIES"] = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/"
julia> using Pkg; Pkg.add("CPLEX")

But I get the error:

julia> Pkg.add("CPLEX")
   Resolving package versions...
  No Changes to `~/.julia/environments/v1.11/Project.toml`
  No Changes to `~/.julia/environments/v1.11/Manifest.toml`
Precompiling project...
  ✗ CPLEX
  0 dependencies successfully precompiled in 1 seconds. 54 already precompiled.
  1 dependency errored.
  For a report of the errors see `julia> err`. To retry use `pkg> precompile`

julia> err
PkgPrecompileError: The following 1 direct dependency failed to precompile:

CPLEX 

Failed to precompile CPLEX [a076750e-1247-5638-91d2-ce28b192dca0] to "/home/USER/.julia/compiled/v1.11/CPLEX/jl_Add2DY".
ERROR: LoadError: CPLEX not properly installed. Please run Pkg.build("CPLEX")
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:35
 [2] top-level scope
   @ ~/.julia/packages/CPLEX/5jmjD/src/CPLEX.jl:12
 [3] include
   @ ./Base.jl:557 [inlined]
 [4] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt128}}, source::Nothing)
   @ Base ./loading.jl:2881
 [5] top-level scope
   @ stdin:6
in expression starting at /home/USER/.julia/packages/CPLEX/5jmjD/src/CPLEX.jl:6
in expression starting at stdin:

Environment:

OS: Fedora Host, Ubuntu 24.04 Distrobox
Julia version: julia version 1.11.5
CPLEX Version: 22.1.1 Academic License

[blegat]

You can see what is happening in Pkg.build("CPLEX") here: https://github.com/jump-dev/CPLEX.jl/blob/master/deps/build.jl
To debug this situation, run that file manually (like a normal julia file) and check that this line is indeed trying the right file name (e.g. by adding @show joinpath(d, name)

CPLEX.jl/deps/build.jl

Line 98 in fae06d2

if isdir(d) && isfile(joinpath(d, name))

[karlfroldan]

It does run successfully and is able to find the correct one. There are no errors when running the file manually.

joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
joinpath(d, name) = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex22120.so"
[ Info: Using CPLEX found in location `/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/libcplex2211.so`

I tested with Pkg.develop(path="."); Pkg.build("CPLEX") and it built correctly without errors. But when using Pkg.add("CPLEX") outside of the local directory, it throws that error.

A workaround is to simply install CPLEX.jl manually by cloning, I guess.

[odow]

This can happen if you first Pkg.add without the ENV set. The cached version can get confused without an explicit Pkg.build (Which is what the error tells you to do "LoadError: CPLEX not properly installed. Please run Pkg.build("CPLEX")")

It should be fine if you do:

ENV["CPLEX_STUDIO_BINARIES"] = "/home/USER/.local/opt/ibm/ILOG/CPLEX_Studio2211/cplex/bin/x86-64_linux/"
import Pkg
Pkg.add("CPLEX")
Pkg.build("CPLEX")

There's no need to manually clone or to modify the source.

[karlfroldan]

Thanks. The error on Pkg.add("CPLEX") was a bit misleading to me. Building despite the error installed it properly.

julia> Pkg.add("CPLEX");
   Resolving package versions...
  No Changes to `~/.julia/environments/v1.11/Project.toml`
  No Changes to `~/.julia/environments/v1.11/Manifest.toml`
Precompiling project...
  ✗ CPLEX
  0 dependencies successfully precompiled in 1 seconds. 54 already precompiled.
  1 dependency errored.
  For a report of the errors see `julia> err`. To retry use `pkg> precompile`

Thanks for this.