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Replace LLVM19 with 20 in README #231

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vtjnash merged 1 commit into from
Nov 25, 2025
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Replace LLVM19 with 20 in README #231

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10 changes: 5 additions & 5 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ This LLVM C backend has been resurrected by Julia Computing with various improve
Installation instructions
=========================

This version of the LLVM C backend works with LLVM 19, for older versions please check the [tags](https://github.com/JuliaHubOSS/llvm-cbe/tags).
This version of the LLVM C backend works with LLVM 20, for older versions please check the [tags](https://github.com/JuliaHubOSS/llvm-cbe/tags).

Step 1: Installing LLVM
=======================
Expand All @@ -26,10 +26,10 @@ On CentOS, install the llvm-devel package:

On Debian and derivatives, install the llvm-dev package via:
```sh
~$ apt install llvm-19-dev clang-19 ninja-build
~$ apt install llvm-20-dev clang-20 ninja-build
```

Note: this project uses LLVM 19, so make sure that the package manager is installing it and not some other version. At the time of writing, [`Ubuntu 24.04 LTS` installs version 18](https://launchpad.net/ubuntu/noble/+package/llvm-dev).
Note: this project uses LLVM 20, so make sure that the package manager is installing it and not some other version. At the time of writing, [`Ubuntu 24.04 LTS` installs version 18](https://launchpad.net/ubuntu/noble/+package/llvm-dev).

Or compile LLVM yourself:
-----------------------------
Expand All @@ -39,7 +39,7 @@ The first step is to compile LLVM on your machine
(this assumes an in-tree build, but out-of-tree will also work):

```sh
~$ git clone --single-branch --branch llvmorg-19.1.1 --depth 1 https://github.com/llvm/llvm-project.git
~$ git clone --single-branch --branch llvmorg-20.1.8 --depth 1 https://github.com/llvm/llvm-project.git
~$ cd llvm-project
llvm-project$ mkdir llvm/build
llvm-project$ cd llvm/build
Expand Down Expand Up @@ -77,7 +77,7 @@ If llvm-cbe compiles, you should be able to run it with the following commands.
llvm-cbe$ cd test/selectionsort
selectionsort$ ls
main.c
selectionsort$ clang-19 -S -emit-llvm -g main.c
selectionsort$ clang-20 -S -emit-llvm -g main.c
selectionsort$ ls
main.c main.ll
selectionsort$ ../../build/tools/llvm-cbe/llvm-cbe main.ll
Expand Down
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