# What are all the components that make Julia?

**URL:** <https://discourse.julialang.org/t/what-are-all-the-components-that-make-julia/19252>\
**Category:** Internals & Design\
**Created:** [January 3, 2019, 9:58pm UTC](https://discourse.julialang.org/t/what-are-all-the-components-that-make-julia/19252 "2019-01-03T21:58:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![affans](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/affans/32/11911_2.png) [@affans](https://discourse.julialang.org/u/affans)\
**Post date:** [January 3, 2019, 9:58pm UTC](https://discourse.julialang.org/t/what-are-all-the-components-that-make-julia/19252/1 "2019-01-03T21:58:25Z")

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What are all the components that make Julia from the bottom? What I mean to ask is at the bottom what compilers (and their versions), shared system libraries, LLVM, OpenBLAS (MKL?), Arpack, Base, Stdlib, and so on that Julia depends on?

I recently came across a bug that prevents me from using our half a million dollar cluster because we built Julia from source. See [https://github.com/JuliaLinearAlgebra/Arpack.jl/issues/5](https://github.com/JuliaLinearAlgebra/Arpack.jl/issues/5)

I will collect all the replies here and make a PR to officially put it in the documentation. (Unless I missed it and it’s already there)…

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**Author:** ![nalimilan](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nalimilan/32/147_2.png) [@nalimilan](https://discourse.julialang.org/u/nalimilan)\
**Post date:** [January 3, 2019, 10:09pm UTC](https://discourse.julialang.org/t/what-are-all-the-components-that-make-julia/19252/2 "2019-01-03T22:09:10Z")

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It’s there already… in a file conveniently called [README](https://github.com/JuliaLang/julia/blob/master/README.md#required-build-tools-and-external-libraries).

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**Author:** ![affans](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/affans/32/11911_2.png) [@affans](https://discourse.julialang.org/u/affans)\
**Post date:** [January 3, 2019, 10:12pm UTC](https://discourse.julialang.org/t/what-are-all-the-components-that-make-julia/19252/3 "2019-01-03T22:12:30Z")

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Ah thanks. That’s exactly what I was looking for.