# Gurobi on Julia 1.4

**URL:** https://discourse.julialang.org/t/gurobi-on-julia-1-4/42131
**Category:** Optimization (Mathematical)
**Created:** [June 26, 2020, 9:19pm UTC](https://discourse.julialang.org/t/gurobi-on-julia-1-4/42131 "2020-06-26T21:19:11Z")
**Posts on this page:** 1
**Showing post:** 8

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### Author: ![SingingKim](https://avatars.discourse-cdn.com/v4/letter/s/5fc32e/32.png) [@SingingKim](https://discourse.julialang.org/u/SingingKim)
#### Post date: [June 27, 2020, 12:04am UTC](https://discourse.julialang.org/t/gurobi-on-julia-1-4/42131/8 "2020-06-27T00:04:06Z")

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Oscar, let me ask you one more similar question.

Ipopt with HSL gives me the following error:

```julia
using JuMP, Ipopt
m = Model(Ipopt.Optimizer)
set_optimizer_attribute(m, "linear_solver", "ma86")
@variable(m, x <= 5)
JuMP.optimize!(m)

```

```julia
Exception of type: OPTION_INVALID in file "IpAlgBuilder.cpp" at line 349:
 Exception message: Selected linear solver HSL_MA86 not available.
Tried to obtain HSL_MA86 from shared library "libhsl.dylib", but the following error occured:
dlopen(libhsl.dylib, 2): image not found

```

However, it also works fine with Julia 1.3.  
(Your renaming solution (libcoinhsl.dylib-\>libhsl.dylib) fixed my previous issue with Julia 1.3.).

Do you have any idea how to fix this for Julia 1.4?

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