# Error building Cbc

**URL:** <https://discourse.julialang.org/t/error-building-cbc/15635>\
**Category:** New to Julia\
**Created:** [September 28, 2018, 6:47pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635 "2018-09-28T18:47:22Z")\
**Posts on this page:** 15\
**Page:** 1

<div class="post-metadata">

**Author:** ![cvpeyisi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cvpeyisi/32/5545_2.png) [@cvpeyisi](https://discourse.julialang.org/u/cvpeyisi)\
**Post date:** [September 28, 2018, 6:47pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/1 "2018-09-28T18:47:22Z")

</div>

Was hoping I could get help with this issue regarding Cbc. I may have been wrong by assuming the package comes together with the Julia installation. I got this error while trying to solve an MILP. Not sure how else to try and remedy it.

```julia
julia> Pkg.build("Cbc")
WARNING: Base.Pkg is deprecated, run `using Pkg` instead
 in module Main
  Building LibCURL ─→ `C:\Users\Chiebuka\.julia\packages\LibCURL\OoXMv\deps\build.log`
  Building WinRPM ──→ `C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\deps\build.log`
  Building Homebrew → `C:\Users\Chiebuka\.julia\packages\Homebrew\l8kUw\deps\build.log`
  Building Cbc ─────→ `C:\Users\Chiebuka\.julia\packages\Cbc\s0xmI\deps\build.log`
┌ Error: Error building `Cbc`:
│
│ ERROR: The system cannot find the file specified.
│ C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\cache\2\mingw64-libstdc%2B%2B6-8.2.0-2.1.noarch.cpio
│
│
│
│ System ERROR:
│ The system cannot find the file specified.
│ [ Info: Updating WinRPM package list
│ [ Info: Downloading https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.xml
│ [ Info: Downloading https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.xml
│ ┌ Info: Packages to install:
│ └ join(names(todo), ", ") = "libstdc++6, Cbc"
│ ┌ Info: Downloading:
│ └ name = "libstdc++6"
│ ┌ Info: Extracting:
│ └ name = "libstdc++6"
│ ERROR: LoadError: MethodError: no method matching pipeline_error(::Int64)
│ Closest candidates are:
│ pipeline_error(!Matched::Base.ProcessChain) at process.jl:718
│ pipeline_error(!Matched::Base.Process) at process.jl:711
│ Stacktrace:
│ [1] macro expansion at .\logging.jl:309 [inlined] (repeats 2 times)
│ [2] do_install(::WinRPM.Package) at C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:465
│ [3] do_install at C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:456 [inlined]
│ [4] macro expansion at .\logging.jl:320 [inlined]
│ [5] #install#19(::Bool, ::Function, ::WinRPM.Package) at C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:385
│ [6] #install at .\none:0 [inlined]
│ [7] #install#17 at C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:372 [inlined]
│ [8] #install at .\none:0 [inlined] (repeats 2 times)
│ [9] (::getfield(WinRPM, Symbol("##34#35")){WinRPM.RPM})() at C:\Users\Chiebuka\.julia\packages\WinRPM\Y9QdZ\src\winrpm_bindeps.jl:42
│ [10] run(::getfield(WinRPM, Symbol("##34#35")){WinRPM.RPM}) at C:\Users\Chiebuka\.julia\packages\BinDeps\ZEval\src\BinDeps.jl:478
│ [11] macro expansion at .\logging.jl:308 [inlined]
│ [12] run(::BinDeps.SynchronousStepCollection) at C:\Users\Chiebuka\.julia\packages\BinDeps\ZEval\src\BinDeps.jl:518
│ [13] satisfy!(::BinDeps.LibraryDependency, ::Array{DataType,1}) at C:\Users\Chiebuka\.julia\packages\BinDeps\ZEval\src\dependencies.jl:944
│ [14] satisfy!(::BinDeps.LibraryDependency) at C:\Users\Chiebuka\.julia\packages\BinDeps\ZEval\src\dependencies.jl:922
│ [15] top-level scope at C:\Users\Chiebuka\.julia\packages\BinDeps\ZEval\src\dependencies.jl:977
│ [16] include at .\boot.jl:317 [inlined]
│ [17] include_relative(::Module, ::String) at .\loading.jl:1038
│ [18] include(::Module, ::String) at .\sysimg.jl:29
│ [19] include(::String) at .\client.jl:398
│ [20] top-level scope at none:0
│ in expression starting at C:\Users\Chiebuka\.julia\packages\Cbc\s0xmI\deps\build.jl:64
│
│ 7-Zip [64] 16.04 : Copyright (c) 1999-2016 Igor Pavlov : 2016-10-04
│
│ Scanning the drive for archives:
└ @ Pkg.Operations C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v0.7\Pkg\src\Operations.jl:1068

julia>

```

---

<div class="post-metadata">

**Author:** ![dpsanders](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dpsanders/32/3573_2.png) [@dpsanders](https://discourse.julialang.org/u/dpsanders)\
**Post date:** [September 28, 2018, 8:36pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/2 "2018-09-28T20:36:08Z")

</div>

Almost nothing “comes with” Julia, but it is all easily installable, e.g.

```julia
using Pkg # load the package manager

Pkg.add("Cbc") # install the Cbc package

using Cbc # load the Cbc package

# stuff that actually uses the package here

```

From the REPL (command-line) version of Julia, instead just type

```julia
] add Cbc

```

The `]` will put you in a special package manager mode. (Leave it with backspace.)

---

<div class="post-metadata">

**Author:** ![cvpeyisi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cvpeyisi/32/5545_2.png) [@cvpeyisi](https://discourse.julialang.org/u/cvpeyisi)\
**Post date:** [September 28, 2018, 9:12pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/3 "2018-09-28T21:12:22Z")

</div>

Thanks for replying to me. I did try the Pkg.add option to install the Cbc package.

But then when I tried to run my .jl file, I had these errors:

```julia
[Info: Precompiling Cbc [9961bab8-2fa3-5c5a-9d89-47fab24efd76]
ERROR: LoadError: Cbc not properly installed. Please run Pkg.build("Cbc")
Stacktrace:
 [1] error(::String) at .\error.jl:33
 [2] top-level scope at C:\Users\Chiebuka\.julia\packages\Cbc\s0xmI\src\Cbc.jl:8
 [3] include at .\boot.jl:317 [inlined]
 [4] include_relative(::Module, ::String) at .\loading.jl:1038
 [5] include(::Module, ::String) at .\sysimg.jl:29
 [6] top-level scope at none:2
 [7] eval at .\boot.jl:319 [inlined]
 [8] eval(::Expr) at .\client.jl:399
 [9] top-level scope at .\none:3
in expression starting at C:\Users\Chiebuka\.julia\packages\Cbc\s0xmI\src\Cbc.jl:5
ERROR: LoadError: Failed to precompile Cbc [9961bab8-2fa3-5c5a-9d89-47fab24efd76] to C:\Users\Chiebuka\.julia\compiled\v0.7\Cbc\ARPfV.ji.
Stacktrace:
 [1] error(::String) at .\error.jl:33
 [2] macro expansion at .\logging.jl:313 [inlined]
 [3] compilecache(::Base.PkgId, ::String) at .\loading.jl:1185
 [4] macro expansion at .\logging.jl:311 [inlined]
 [5] _require(::Base.PkgId) at .\loading.jl:941
 [6] require(::Base.PkgId) at .\loading.jl:852
 [7] macro expansion at .\logging.jl:311 [inlined]
 [8] require(::Module, ::Symbol) at .\loading.jl:834
 [9] include_string(::Module, ::String, ::String) at .\loading.jl:1002
 [10] (::getfield(Atom, Symbol("##128#133")){String,String,Module})() at C:\Users\Chiebuka\.julia\packages\Atom\Fha1N\src\eval.jl:120
 [11] withpath(::getfield(Atom, Symbol("##128#133")){String,String,Module}, ::String) at C:\Users\Chiebuka\.julia\packages\CodeTools\hB4Hy\src\utils.jl:30
 [12] withpath at C:\Users\Chiebuka\.julia\packages\Atom\Fha1N\src\eval.jl:46 [inlined]
 [13] #127 at C:\Users\Chiebuka\.julia\packages\Atom\Fha1N\src\eval.jl:117 [inlined]
 [14] hideprompt(::getfield(Atom, Symbol("##127#132")){String,String,Module}) at C:\Users\Chiebuka\.julia\packages\Atom\Fha1N\src\repl.jl:84
 [15] macro expansion at C:\Users\Chiebuka\.julia\packages\Atom\Fha1N\src\eval.jl:116 [inlined]
 [16] (::getfield(Atom, Symbol("##126#131")){Dict{String,Any}})() at .\task.jl:85
in expression starting at H:\Work\Engineering Soft\Julia + ATOM\JuMP Examples\Philip Thomas\sudoku.jl:7

```

So I went ahead with the Pkg.build option and that’s when I got the error I posted initially.

---

<div class="post-metadata">

**Author:** ![dpsanders](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dpsanders/32/3573_2.png) [@dpsanders](https://discourse.julialang.org/u/dpsanders)\
**Post date:** [September 29, 2018, 12:52am UTC](https://discourse.julialang.org/t/error-building-cbc/15635/4 "2018-09-29T00:52:32Z")

</div>

It looks like this package hasn’t yet been updated for Julia 0.7 / 1.0?

---

<div class="post-metadata">

**Author:** ![cvpeyisi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cvpeyisi/32/5545_2.png) [@cvpeyisi](https://discourse.julialang.org/u/cvpeyisi)\
**Post date:** [September 29, 2018, 12:25pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/5 "2018-09-29T12:25:01Z")

</div>

What do you think might be a preferred solution? Should I revert to Julia 0.6? You think I may not have these problems with that version, or wait till its been updated for Julia 0.7/1.0?

---

<div class="post-metadata">

**Author:** ![dpsanders](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dpsanders/32/3573_2.png) [@dpsanders](https://discourse.julialang.org/u/dpsanders)\
**Post date:** [September 29, 2018, 6:45pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/6 "2018-09-29T18:45:19Z")

</div>

You can try with 0.6 (which you can install alongside 0.7, without affecting the 0. 7 installation).

Are there other solvers you can try?

---

<div class="post-metadata">

**Author:** ![cvpeyisi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cvpeyisi/32/5545_2.png) [@cvpeyisi](https://discourse.julialang.org/u/cvpeyisi)\
**Post date:** [September 29, 2018, 7:13pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/7 "2018-09-29T19:13:11Z")

</div>

Ok cool. I’d install 0.6. Perhaps Gurobi would suffice for now. Thanks a lot for the help.

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [September 29, 2018, 10:36pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/8 "2018-09-29T22:36:36Z")

</div>

Try removing Cbc and re-adding it. It should work on v1.0.

However, make sure to read:

> [@JuMP and Julia 0.7/1.0](https://discourse.julialang.org/t/jump-and-julia-0-7-1-0/12964):
>
> Updated Oct 1: tl;dr: Thanks mostly to the persistence of @ExpandingMan, JuMP 0.18.3 was released today supporting Julia 0.6, 0.7, and 1.0. Upgrade away! If you are using JuMP 0.18 on Julia 0.6, we do recommend upgrading now to Julia 0.7 and JuMP 0.18.3. Use Julia 0.7 to assist with updating existing code. If the code runs without deprecation warnings on Julia 0.7, it should run on Julia 1.0 (with some exceptions). Note however that not all solvers have been updated for Julia 1.0/0.7 yet. (We …

---

<div class="post-metadata">

**Author:** ![orhan\_abar](https://avatars.discourse-cdn.com/v4/letter/o/e5b9ba/32.png) [@orhan\_abar](https://discourse.julialang.org/u/orhan_abar)\
**Post date:** [October 16, 2018, 4:01pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/9 "2018-10-16T16:01:35Z")

</div>

I am getting the same error with Windows 10 and Julia 1.0.1  
I can build Cbc with Mac OSX without any problem but on Windows, it keeps giving an error.

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [October 16, 2018, 4:17pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/10 "2018-10-16T16:17:40Z")

</div>

Can you provide more information? Please provide a copy of the text of the error, not a screenshot.

---

<div class="post-metadata">

**Author:** ![orhan\_abar](https://avatars.discourse-cdn.com/v4/letter/o/e5b9ba/32.png) [@orhan\_abar](https://discourse.julialang.org/u/orhan_abar)\
**Post date:** [October 16, 2018, 4:26pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/11 "2018-10-16T16:26:09Z")

</div>

Here is the error:

Error: Error building `Cbc` :  
│  
│ ERROR: The system cannot find the file specified.  
│ C:\Users\<user\>.julia\packages\WinRPM\Y9QdZ\cache\2\mingw64-libstdc%2B%2B6-8.2.0-2.1.noarch.cpio  
│  
│  
│  
│ System ERROR:  
│ The system cannot find the file specified.  
│ [ Info: Updating WinRPM package list  
│ [Info: Downloading [https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE\_Leap\_42.2/repodata/repomd.xml](https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win32/openSUSE_Leap_42.2/repodata/repomd.xml)  
│ [Info: Downloading [https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win64/openSUSE\_Leap\_42.2/repodata/repomd.xml](https://cache.julialang.org/http://download.opensuse.org/repositories/windows:/mingw:/win64/openSUSE_Leap_42.2/repodata/repomd.xml)  
│ ┌ Info: Packages to install:  
│ └ join(names(todo), “, “) = “libstdc++6, Cbc”  
│ ┌ Info: Downloading:  
│ └ name = “libstdc++6”  
│ ┌ Info: Extracting:  
│ └ name = “libstdc++6”  
│ ERROR: LoadError: MethodError: no method matching pipeline\_error(::Int64)  
│ Closest candidates are:  
│ pipeline\_error(!Matched::Base.ProcessChain) at process.jl:711  
│ pipeline\_error(!Matched::Base.Process) at process.jl:704  
│ Stacktrace:  
│ [1] macro expansion at .\logging.jl:309 [inlined] (repeats 2 times)  
│ [2] do\_install(::WinRPM.Package) at C:\Users\<user\>.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:465  
│ [3] do\_install at C:\Users\<user\>.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:456 [inlined]  
│ [4] macro expansion at .\logging.jl:320 [inlined]  
│ [5] #install#19(::Bool, ::Function, ::WinRPM.Package) at C:\Users\<user\>.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:385  
│ [6] #install at .\none:0 [inlined]  
│ [7] #install#17 at C:\Users\<user\>.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:372 [inlined]  
│ [8] #install at .\none:0 [inlined] (repeats 2 times)  
│ [9] (::getfield(WinRPM, Symbol(”#[#34](https://github.com/JuliaOpt/Cbc.jl/issues/34)#35”)){WinRPM.RPM})() at C:\Users\<user\>.julia\packages\WinRPM\Y9QdZ\src\winrpm\_bindeps.jl:42  
│ [10] run(::getfield(WinRPM, Symbol(“#[#34](https://github.com/JuliaOpt/Cbc.jl/issues/34)#35”)){WinRPM.RPM}) at C:\Users\<user\>.julia\packages\BinDeps\ZEval\src\BinDeps.jl:478  
│ [11] macro expansion at .\logging.jl:308 [inlined]  
│ [12] run(::BinDeps.SynchronousStepCollection) at C:\Users\<user\>.julia\packages\BinDeps\ZEval\src\BinDeps.jl:518  
│ [13] satisfy!(::BinDeps.LibraryDependency, ::Array{DataType,1}) at C:\Users\<user\>.julia\packages\BinDeps\ZEval\src\dependencies.jl:944  
│ [14] satisfy!(::BinDeps.LibraryDependency) at C:\Users\<user\>.julia\packages\BinDeps\ZEval\src\dependencies.jl:922  
│ [15] top-level scope at C:\Users\<user\>.julia\packages\BinDeps\ZEval\src\dependencies.jl:977  
│ [16] include at .\boot.jl:317 [inlined]  
│ [17] include\_relative(::Module, ::String) at .\loading.jl:1041  
│ [18] include(::Module, ::String) at .\sysimg.jl:29  
│ [19] include(::String) at .\client.jl:388  
│ [20] top-level scope at none:0  
│ in expression starting at C:\Users\<user\>.julia\packages\Cbc\s0xmI\deps\build.jl:64  
│  
│ 7-Zip [64] 16.04 : Copyright (c) 1999-2016 Igor Pavlov : 2016-10-04  
│  
│ Scanning the drive for archives:  
└ @ Pkg.Operations C:\cygwin\home\Administrator\buildbot\worker\package\_win64\build\usr\share\julia\stdlib\v1.0\Pkg\src\Operations.jl:1069

---

<div class="post-metadata">

**Author:** ![Julien\_Gooris](https://avatars.discourse-cdn.com/v4/letter/j/71e660/32.png) [@Julien\_Gooris](https://discourse.julialang.org/u/Julien_Gooris)\
**Post date:** [October 19, 2018, 1:43pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/12 "2018-10-19T13:43:31Z")

</div>

I face the same issue (with WIN 10). Same error message. I tried to reinstall WinRPM, which seems to be part of the problem, but without success.

---

<div class="post-metadata">

**Author:** ![odow](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/odow/32/28685_2.png) [@odow](https://discourse.julialang.org/u/odow)\
**Post date:** [October 19, 2018, 2:14pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/13 "2018-10-19T14:14:22Z")

</div>

See [build fails on Windows on 0.7/1.0 · Issue #56 · jump-dev/Cbc.jl · GitHub](https://github.com/JuliaOpt/Cbc.jl/issues/56)

---

<div class="post-metadata">

**Author:** ![orhan\_abar](https://avatars.discourse-cdn.com/v4/letter/o/e5b9ba/32.png) [@orhan\_abar](https://discourse.julialang.org/u/orhan_abar)\
**Post date:** [October 21, 2018, 8:21pm UTC](https://discourse.julialang.org/t/error-building-cbc/15635/14 "2018-10-21T20:21:27Z")

</div>

I found a solution for that. The error is about finding a file in WinRPM package so when you change the file name

```julia
"mingw64-libstdc++6-8.2.0-2.1.noarch.cpio" to
"mingw64-libstdc%2B%2B6-8.2.0-2.3.noarch.cpio" in
C:\Users&lt;user&gt;.julia\packages\WinRPM\Y9QdZ\cache\2

```

folder it builds fine.  
But we still need a generic solution.

---

<div class="post-metadata">

**Author:** ![Julien\_Gooris](https://avatars.discourse-cdn.com/v4/letter/j/71e660/32.png) [@Julien\_Gooris](https://discourse.julialang.org/u/Julien_Gooris)\
**Post date:** [October 22, 2018, 8:15am UTC](https://discourse.julialang.org/t/error-building-cbc/15635/15 "2018-10-22T08:15:12Z")

</div>

Your solution works like a charm ! Many thanks.  
I can go back to MILP problems using JuMP now 🙂