could not load library "libstdc++"

[rmpdelima]

I am running Mac OS 10.13.6 and JuliaPro 1.2.
I tried to install CPLEX v0.5.1 but I get this error when building:

ERROR: LoadError: could not load library "libstdc++"
dlopen(libstdc++.dylib, 9): image not found

I am lost and need some help.

This is the output of adding the CPLEX package

(v1.2) pkg> add CPLEX#Master
  Updating git-repo `https://github.com/JuliaOpt/CPLEX.jl.git`
 Resolving package versions...
  Updating `~/.juliapro/JuliaPro_v1.2.0-1/environments/v1.2/Project.toml`
  [a076750e] + CPLEX v0.5.1 #Master (https://github.com/JuliaOpt/CPLEX.jl.git)
  Updating `~/.juliapro/JuliaPro_v1.2.0-1/environments/v1.2/Manifest.toml`
  [a076750e] + CPLEX v0.5.1 #Master (https://github.com/JuliaOpt/CPLEX.jl.git)
  [f8899e07] + LinQuadOptInterface v0.6.0
  [b8f27783] + MathOptInterface v0.8.4
  [fdba3010] + MathProgBase v0.7.7

Here is the output status

(v1.2) pkg> status
    Status `~/.juliapro/JuliaPro_v1.2.0-1/environments/v1.2/Project.toml`
  [c52e3926] Atom v0.11.2
  [a076750e] CPLEX v0.5.1 #Master (https://github.com/JuliaOpt/CPLEX.jl.git)
  [60bf3e95] GLPK v0.10.0
  [2e9cd046] Gurobi v0.6.0
  [7073ff75] IJulia v1.20.0
  [4076af6c] JuMP v0.19.2
  [e5e0dc1b] Juno v0.7.2

[rmpdelima]

Meanwhile, I did the same steps to install CPLEX in Julia 1.2.0 (not in the JuliaPro installation above), and it worked fine.