# Error building \`PackageCompiler\`:

**URL:** <https://discourse.julialang.org/t/error-building-packagecompiler/35019>\
**Category:** General Usage\
**Created:** [February 22, 2020, 3:48pm UTC](https://discourse.julialang.org/t/error-building-packagecompiler/35019 "2020-02-22T15:48:56Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Iulian.Cioarca](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iulian.cioarca/32/30166_2.png) [@Iulian.Cioarca](https://discourse.julialang.org/u/Iulian.Cioarca)\
**Post date:** [February 22, 2020, 3:48pm UTC](https://discourse.julialang.org/t/error-building-packagecompiler/35019/1 "2020-02-22T15:48:56Z")

</div>

I recently upgraded my setup and reinstalled Julia. Package compiler will not build because it’s looking for `7z.exe` in the Julia `bin` folder instead of `libexec` (on Windows).

```julia
(v1.3) pkg> add PackageCompiler
 Resolving package versions...
 Installed WinRPM ────────── v0.4.2
 Installed HTTPClient ────── v0.2.1
 Installed Libz ──────────── v1.0.1
 Installed LibCURL ───────── v0.5.2
 Installed PackageCompiler ─ v0.6.4
 Installed LibExpat ──────── v0.6.1
 Installed BufferedStreams ─ v1.0.0
  Updating `C:\Julia-1.3.1\.julia\environments\v1.3\Project.toml`
  [9b87118b] + PackageCompiler v0.6.4
  Updating `C:\Julia-1.3.1\.julia\environments\v1.3\Manifest.toml`
  [e1450e63] + BufferedStreams v1.0.0
  [0862f596] + HTTPClient v0.2.1
  [b27032c2] + LibCURL v0.5.2
  [522f3ed2] + LibExpat v0.6.1
  [2ec943e9] + Libz v1.0.1
  [9b87118b] + PackageCompiler v0.6.4
  [c17dfb99] + WinRPM v0.4.2
  Building LibCURL ────────→ `C:\Julia-1.3.1\.julia\packages\LibCURL\lWJxD\deps\build.log`
  Building WinRPM ─────────→ `C:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\deps\build.log`
  Building PackageCompiler → `C:\Julia-1.3.1\.julia\packages\PackageCompiler\CJQcs\deps\build.log`
┌ Error: Error building `PackageCompiler`: 
│ [ Info: Installing GCC
│ [ Info: Multiple package candidates found for mingw64-unistd-pthread-devel, picking newest.
│ ┌ Info: Packages to install:
│ └ join(names(todo), ", ") = "libgcc_s_seh1, cpp, binutils, libgmp10, headers, zlib1, libwinpthread1, winpthreads-devel, runtime, libmpfr4, libmpc3, gcc"
│ ┌ Info: Downloading:
│ └ name = "libgcc_s_seh1"
│ ┌ Info: Extracting:
│ └ name = "libgcc_s_seh1"
│ ERROR: LoadError: IOError: could not spawn `'C:\Julia-1.3.1\bin\7z.exe' x -y 'C:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\cache\2\noarch%2Fmingw64-libgcc_s_seh1-8.2.0-2.8.noarch.rpm' '-oC:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\cache\2'`: no such file or directory (ENOENT)
│ Stacktrace:
│ [1] _spawn_primitive(::String, ::Cmd, ::Array{Any,1}) at .\process.jl:99
│ [2] setup_stdios(::Base.var"#554#555"{Cmd}, ::Array{Any,1}) at .\process.jl:112
│ [3] _spawn at .\process.jl:111 [inlined]
│ [4] #open#563(::Bool, ::Bool, ::typeof(open), ::Cmd, ::Base.DevNull) at .\process.jl:370
│ [5] open at .\process.jl:361 [inlined]
│ [6] open(::Cmd, ::String, ::Base.DevNull) at .\process.jl:341
│ [7] open at .\process.jl:338 [inlined]
│ [8] do_install(::WinRPM.Package) at C:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:482
│ [9] do_install at C:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:456 [inlined]
│ [10] #install#19(::Bool, ::typeof(WinRPM.install), ::WinRPM.Package) at C:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:403
│ [11] #install at .\tuple.jl:0 [inlined]
│ [12] #install#17 at C:\Julia-1.3.1\.julia\packages\WinRPM\Y9QdZ\src\WinRPM.jl:372 [inlined]
│ [13] #install at .\none:0 [inlined] (repeats 2 times)
│ [14] build() at C:\Julia-1.3.1\.julia\packages\PackageCompiler\CJQcs\deps\build.jl:43
│ [15] top-level scope at C:\Julia-1.3.1\.julia\packages\PackageCompiler\CJQcs\deps\build.jl:63
│ [16] include at .\boot.jl:328 [inlined]
│ [17] include_relative(::Module, ::String) at .\loading.jl:1105
│ [18] include(::Module, ::String) at .\Base.jl:31
│ [19] include(::String) at .\client.jl:424
│ [20] top-level scope at none:5
│ in expression starting at C:\Julia-1.3.1\.julia\packages\PackageCompiler\CJQcs\deps\build.jl:63
└ @ Pkg.Operations D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\backwards_compatible_isolation.jl:649

```

Did anyone else encounter this error?

---

<div class="post-metadata">

**Author:** ![fredrikekre](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/fredrikekre/32/1688_2.png) [@fredrikekre](https://discourse.julialang.org/u/fredrikekre)\
**Post date:** [February 22, 2020, 4:39pm UTC](https://discourse.julialang.org/t/error-building-packagecompiler/35019/2 "2020-02-22T16:39:11Z")

</div>

That is a very old version of PackageCompiler, there is a new version on the way ([Release v1 · Issue #337 · JuliaLang/PackageCompiler.jl · GitHub](https://github.com/JuliaLang/PackageCompiler.jl/issues/337)). In the meantime, try the master branch:

```julia
$ pkg add PackageCompiler#master

```

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<div class="post-metadata">

**Author:** ![Iulian.Cioarca](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iulian.cioarca/32/30166_2.png) [@Iulian.Cioarca](https://discourse.julialang.org/u/Iulian.Cioarca)\
**Post date:** [February 22, 2020, 7:15pm UTC](https://discourse.julialang.org/t/error-building-packagecompiler/35019/3 "2020-02-22T19:15:31Z")

</div>

Thank you!