# Installing Ipopt
**URL:** https://discourse.julialang.org/t/installing-ipopt/35608
**Category:** Optimization (Mathematical)
**Tags:** package
**Created:** [March 5, 2020, 8:43pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608 "2020-03-05T20:43:23Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@varun\_yaramasu](https://discourse.julialang.org/u/varun_yaramasu)
#### Post date: [March 5, 2020, 8:43pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/1 "2020-03-05T20:43:23Z")
```julia
julia> Pkg.build("Ipopt")
Building CodecZlib ─→ `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\CodecZlib\5t9zO\deps\build.log`
Building MbedTLS ───→ `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\MbedTLS\a1JFn\deps\build.log`
Building CodecBzip2 → `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\CodecBzip2\T5yr7\deps\build.log`
Building Ipopt ─────→ `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.log`
┌ Error: Error building `Ipopt`:
│ ERROR: LoadError: LibraryProduct(nothing, ["libipopt"], :libipopt, "Prefix(C:\\Users\\yaramasv\\.juliapro\\JuliaPro_v1.3.1-1\\packages\\Ipopt\\ruIXY\\deps\\usr)") is not satisfied, cannot generate deps.jl!
│ Stacktrace:
│ [1] error(::String) at .\error.jl:33
│ [2] #write_deps_file#175(::Bool, ::Bool, ::typeof(write_deps_file), ::String, ::Array{Product,1}) at C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\BinaryProvider\src\Products.jl:419
│ [3] (::BinaryProvider.var"#kw##write_deps_file")(::NamedTuple{(:verbose,),Tuple{Bool}}, ::typeof(write_deps_file), ::String, ::Array{Product,1}) at .\tuple.jl:0
│ [4] top-level scope at C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.jl:89
│ [5] include at .\boot.jl:328 [inlined]
│ [6] include_relative(::Module, ::String) at .\loading.jl:1105
│ [7] include(::Module, ::String) at .\Base.jl:31
│ [8] include(::String) at .\client.jl:424
│ [9] top-level scope at none:5
│ in expression starting at C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.jl:89
│ caused by [exception 1]
│ IOError: symlink: operation not permitted (EPERM)
│ Stacktrace:
│ [1] uv_error at .\libuv.jl:97 [inlined]
│ [2] symlink(::String, ::String) at .\file.jl:851
│ [3] probe_symlink_creation(::String) at C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\BinaryProvider\src\PlatformEngines.jl:125
│ [4] #unpack#111(::Bool, ::typeof(unpack), ::String, ::String) at C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\BinaryProvider\src\PlatformEngines.jl:764
│ [5] #unpack at .\tuple.jl:0 [inlined]
│ [6] #install#147(::Prefix, ::String, ::Bool, ::Bool, ::Bool, ::typeof(install), ::String, ::String) at C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\BinaryProvider\src\Prefix.jl:347
│ [7] (::BinaryProvider.var"#kw##install")(::NamedTuple{(:prefix, :force, :verbose),Tuple{Prefix,Bool,Bool}}, ::typeof(install), ::String, ::String) at .\tuple.jl:0
│ [8] top-level scope at C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.jl:84
│ [9] include at .\boot.jl:328 [inlined]
│ [10] include_relative(::Module, ::String) at .\loading.jl:1105
│ [11] include(::Module, ::String) at .\Base.jl:31
│ [12] include(::String) at .\client.jl:424
│ [13] top-level scope at none:5
└ @ Pkg.Operations C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:898
```
I really don’t know what’s happening here? Please help me.
Thank you.
---
### Author:  [@mauro3](https://discourse.julialang.org/u/mauro3)
#### Post date: [March 5, 2020, 8:56pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/2 "2020-03-05T20:56:06Z")
Maybe this helps: [Symlinks in Windows 10! - Windows Developer Blog](https://blogs.windows.com/windowsdeveloper/2016/12/02/symlinks-windows-10/), apparently you have to activate developer mode [Enable your device for development - Windows apps | Microsoft Docs](https://docs.microsoft.com/en-us/windows/uwp/get-started/enable-your-device-for-development?redirectedfrom=MSDN).
---
### Author:  [@varun\_yaramasu](https://discourse.julialang.org/u/varun_yaramasu)
#### Post date: [March 5, 2020, 9:20pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/3 "2020-03-05T21:20:26Z")
Thank you [mauro3](https://discourse.julialang.org/u/mauro3) for your reply, using the link you have provided I was able to solve the second part of error, but first part remained same and it’s giving me the same error.
```julia
julia> Pkg.build("Ipopt")
Building CodecZlib ─→ `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\CodecZlib\5t9zO\deps\build.log`
Building MbedTLS ───→ `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\MbedTLS\a1JFn\deps\build.log`
Building CodecBzip2 → `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\CodecBzip2\T5yr7\deps\build.log`
Building Ipopt ─────→ `C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.log`
┌ Error: Error building `Ipopt`:
│ ERROR: LoadError: LibraryProduct(nothing, ["libipopt"], :libipopt, "Prefix(C:\\Users\\yaramasv\\.juliapro\\JuliaPro_v1.3.1-1\\packages\\Ipopt\\ruIXY\\deps\\usr)") is not satisfied, cannot generate deps.jl!
│ Stacktrace:
│ [1] error(::String) at .\error.jl:33
│ [2] #write_deps_file#175(::Bool, ::Bool, ::typeof(write_deps_file), ::String, ::Array{Product,1}) at C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\BinaryProvider\src\Products.jl:419
│ [3] (::BinaryProvider.var"#kw##write_deps_file")(::NamedTuple{(:verbose,),Tuple{Bool}}, ::typeof(write_deps_file), ::String, ::Array{Product,1}) at .\tuple.jl:0
│ [4] top-level scope at C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.jl:89
│ [5] include at .\boot.jl:328 [inlined]
│ [6] include_relative(::Module, ::String) at .\loading.jl:1105
│ [7] include(::Module, ::String) at .\Base.jl:31
│ [8] include(::String) at .\client.jl:424
│ [9] top-level scope at none:5
│ in expression starting at C:\Users\yaramasv\.juliapro\JuliaPro_v1.3.1-1\packages\Ipopt\ruIXY\deps\build.jl:89
└ @ Pkg.Operations C:\Users\julia\AppData\Local\Julia-1.3.1\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:898
```
Do you think is there any other changes i need to do?. And I did not understand this part in error at all `cannot generate deps.jl!`
---
### Author:  [@mauro3](https://discourse.julialang.org/u/mauro3)
#### Post date: [March 5, 2020, 9:32pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/4 "2020-03-05T21:32:20Z")
I don’t really know. Two things I would try. Check that this path exists:
> [@varun\_yaramasu](#):
>
> C:\Users\yaramasv\.juliapro\JuliaPro\_v1.3.1-1\packages\Ipopt\ruIXY\deps\usr
If not, does it help if you create it? If that doesn’t help, have you tried to completely remove Ipopt and start from scratch? Other than that, I don’t know and someone else needs to help. If you don’t get help here within about 24h, then maybe make an issue with Ipopt.jl.
---
### Author:  [@varun\_yaramasu](https://discourse.julialang.org/u/varun_yaramasu)
#### Post date: [March 5, 2020, 9:42pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/5 "2020-03-05T21:42:36Z")
Thanks for you time [mauro3](https://discourse.julialang.org/u/mauro3).
I have checked, the path exists.
I have also tried to remove Ipopt completely and started from scratch it didn’t help.
---
### Author:  [@odow](https://discourse.julialang.org/u/odow)
#### Post date: [March 6, 2020, 3:46pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/6 "2020-03-06T15:46:53Z")
Can you install other packages?
What happens if you run `Pkg.add("GLPK")`?
What happens if you download normal Julia, i.e., not Julia pro?
---
### Author:  [@varun\_yaramasu](https://discourse.julialang.org/u/varun_yaramasu)
#### Post date: [March 13, 2020, 5:34pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/7 "2020-03-13T17:34:06Z")
I have uninstalled both julia pro and julia of my current versions and downloaded the versions and it is working perfectly , I really don’t know what happened over there.
But, anyways thanks for answering my question.
---
### Author:  [@Harsha](https://discourse.julialang.org/u/Harsha)
#### Post date: [March 27, 2020, 3:50pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/8 "2020-03-27T15:50:16Z")
This issue is specific to JuliaPro v1.3.1-1 , this has been fixed in the newer versions of JuliaPro, if you don’t want to upgrade to the newer version, then you can execute following commands in your JuliaPro REPL to fix this issue
```julia
using BinaryProvider
Core.eval(BinaryProvider, :(default_platkey = platform_key_abi(string(Sys.MACHINE, compiler_abi_str(detect_compiler_abi())))))
include(joinpath(DEPOT_PATH[1],"packages","Ipopt","ruIXY","deps","build.jl"))
using Ipopt
```
---
### Author:  [@varun\_yaramasu](https://discourse.julialang.org/u/varun_yaramasu)
#### Post date: [March 27, 2020, 4:46pm UTC](https://discourse.julialang.org/t/installing-ipopt/35608/9 "2020-03-27T16:46:58Z")
Thanks for getting back to me.