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README: LLVM 21 -> 22

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Alex Rønne Petersen
2026-04-26 07:10:46 +02:00
parent a83aad152b
commit 0e8e987deb
1 changed files with 41 additions and 41 deletions
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@@ -47,7 +47,7 @@ Ensure you have the required dependencies:
* CMake >= 3.15 * CMake >= 3.15
* System C/C++ Toolchain * System C/C++ Toolchain
* LLVM, Clang, LLD development libraries, version 21.x, compiled with the * LLVM, Clang, LLD development libraries, version 22.x, compiled with the
same system C/C++ toolchain. same system C/C++ toolchain.
- If the system package manager lacks these libraries, or has them misconfigured, - If the system package manager lacks these libraries, or has them misconfigured,
see below for how to build them from source. see below for how to build them from source.
@@ -257,15 +257,15 @@ that you have **no** trailing slash (`/` or `\`) at the end of the
Install [CMake](https://cmake.org/), version 3.20.0 or newer. Install [CMake](https://cmake.org/), version 3.20.0 or newer.
[Download LLVM, Clang, and LLD sources](https://releases.llvm.org/download.html#21.0.0) [Download LLVM, Clang, and LLD sources](https://releases.llvm.org/download.html#22.0.0)
The downloads from llvm lead to the github release pages, where the source's The downloads from llvm lead to the github release pages, where the source's
will be listed as : `llvm-21.X.X.src.tar.xz`, `clang-21.X.X.src.tar.xz`, will be listed as : `llvm-22.X.X.src.tar.xz`, `clang-22.X.X.src.tar.xz`,
`lld-21.X.X.src.tar.xz`. Unzip each to their own directory. Ensure no `lld-22.X.X.src.tar.xz`. Unzip each to their own directory. Ensure no
directories have spaces in them. For example: directories have spaces in them. For example:
* `C:\Users\Andy\llvm-21.0.0.src` * `C:\Users\Andy\llvm-22.0.0.src`
* `C:\Users\Andy\clang-21.0.0.src` * `C:\Users\Andy\clang-22.0.0.src`
* `C:\Users\Andy\lld-21.0.0.src` * `C:\Users\Andy\lld-22.0.0.src`
Install [Build Tools for Visual Studio Install [Build Tools for Visual Studio
2019](https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019). 2019](https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019).
@@ -298,9 +298,9 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
##### Release Mode ##### Release Mode
```bat ```bat
mkdir C:\Users\Andy\llvm-21.0.0.src\build-release mkdir C:\Users\Andy\llvm-22.0.0.src\build-release
cd C:\Users\Andy\llvm-21.0.0.src\build-release cd C:\Users\Andy\llvm-22.0.0.src\build-release
"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt - "c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -
DLLVM_ENABLE_ZLIB=OFF -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_RELEASE=MT DLLVM_ENABLE_ZLIB=OFF -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_RELEASE=MT
msbuild /m -p:Configuration=Release INSTALL.vcxproj msbuild /m -p:Configuration=Release INSTALL.vcxproj
``` ```
@@ -308,10 +308,10 @@ msbuild /m -p:Configuration=Release INSTALL.vcxproj
##### Debug Mode ##### Debug Mode
```bat ```bat
mkdir C:\Users\Andy\llvm-21.0.0.src\build-debug mkdir C:\Users\Andy\llvm-22.0.0.src\build-debug
cd C:\Users\Andy\llvm-21.0.0.src\build-debug cd C:\Users\Andy\llvm-22.0.0.src\build-debug
"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug - "c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -
DLLVM_ENABLE_ZLIB=OFF -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_DEBUG=MTd DLLVM_ENABLE_ZLIB=OFF -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_DEBUG=MTd
msbuild /m INSTALL.vcxproj msbuild /m INSTALL.vcxproj
``` ```
@@ -322,18 +322,18 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
##### Release Mode ##### Release Mode
```bat ```bat
mkdir C:\Users\Andy\lld-21.0.0.src\build-release mkdir C:\Users\Andy\lld-22.0.0.src\build-release
cd C:\Users\Andy\lld-21.0.0.src\build-release cd C:\Users\Andy\lld-22.0.0.src\build-release
"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-14.0.6-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT "c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-14.0.6-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
msbuild /m -p:Configuration=Release INSTALL.vcxproj msbuild /m -p:Configuration=Release INSTALL.vcxproj
``` ```
##### Debug Mode ##### Debug Mode
```bat ```bat
mkdir C:\Users\Andy\lld-21.0.0.src\build-debug mkdir C:\Users\Andy\lld-22.0.0.src\build-debug
cd C:\Users\Andy\lld-21.0.0.src\build-debug cd C:\Users\Andy\lld-22.0.0.src\build-debug
"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd "c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
msbuild /m INSTALL.vcxproj msbuild /m INSTALL.vcxproj
``` ```
@@ -344,18 +344,18 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
##### Release Mode ##### Release Mode
```bat ```bat
mkdir C:\Users\Andy\clang-21.0.0.src\build-release mkdir C:\Users\Andy\clang-22.0.0.src\build-release
cd C:\Users\Andy\clang-21.0.0.src\build-release cd C:\Users\Andy\clang-22.0.0.src\build-release
"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT "c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
msbuild /m -p:Configuration=Release INSTALL.vcxproj msbuild /m -p:Configuration=Release INSTALL.vcxproj
``` ```
##### Debug Mode ##### Debug Mode
```bat ```bat
mkdir C:\Users\Andy\clang-21.0.0.src\build-debug mkdir C:\Users\Andy\clang-22.0.0.src\build-debug
cd C:\Users\Andy\clang-21.0.0.src\build-debug cd C:\Users\Andy\clang-22.0.0.src\build-debug
"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd "c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
msbuild /m INSTALL.vcxproj msbuild /m INSTALL.vcxproj
``` ```
@@ -371,14 +371,14 @@ This is the generally recommended approach.
```sh ```sh
cd ~/Downloads cd ~/Downloads
git clone --depth 1 --branch release/21.x https://github.com/llvm/llvm-project llvm-project-21 git clone --depth 1 --branch release/22.x https://github.com/llvm/llvm-project llvm-project-22
cd llvm-project-21 cd llvm-project-22
git checkout release/21.x git checkout release/22.x
mkdir build-release mkdir build-release
cd build-release cd build-release
cmake ../llvm \ cmake ../llvm \
-DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-assert \ -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-assert \
-DCMAKE_BUILD_TYPE=Release \ -DCMAKE_BUILD_TYPE=Release \
-DLLVM_ENABLE_PROJECTS="lld;clang" \ -DLLVM_ENABLE_PROJECTS="lld;clang" \
-DLLVM_ENABLE_LIBXML2=OFF \ -DLLVM_ENABLE_LIBXML2=OFF \
@@ -398,16 +398,16 @@ others are in Release mode.
```sh ```sh
cd ~/Downloads cd ~/Downloads
git clone --depth 1 --branch release/21.x https://github.com/llvm/llvm-project llvm-project-21 git clone --depth 1 --branch release/22.x https://github.com/llvm/llvm-project llvm-project-22
cd llvm-project-21 cd llvm-project-22
git checkout release/21.x git checkout release/22.x
# LLVM # LLVM
mkdir llvm/build-debug mkdir llvm/build-debug
cd llvm/build-debug cd llvm/build-debug
cmake .. \ cmake .. \
-DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-debug \ -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug \ -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
-DCMAKE_BUILD_TYPE=Debug \ -DCMAKE_BUILD_TYPE=Debug \
-DLLVM_ENABLE_LIBXML2=OFF \ -DLLVM_ENABLE_LIBXML2=OFF \
-DLLVM_ENABLE_TERMINFO=OFF \ -DLLVM_ENABLE_TERMINFO=OFF \
@@ -421,8 +421,8 @@ cd ../..
mkdir lld/build-debug mkdir lld/build-debug
cd lld/build-debug cd lld/build-debug
cmake .. \ cmake .. \
-DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-debug \ -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug \ -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
-DCMAKE_BUILD_TYPE=Release \ -DCMAKE_BUILD_TYPE=Release \
-DLLVM_PARALLEL_LINK_JOBS=1 \ -DLLVM_PARALLEL_LINK_JOBS=1 \
-DCMAKE_CXX_STANDARD=17 \ -DCMAKE_CXX_STANDARD=17 \
@@ -434,8 +434,8 @@ cd ../..
mkdir clang/build-debug mkdir clang/build-debug
cd clang/build-debug cd clang/build-debug
cmake .. \ cmake .. \
-DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-debug \ -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug \ -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
-DCMAKE_BUILD_TYPE=Release \ -DCMAKE_BUILD_TYPE=Release \
-DLLVM_PARALLEL_LINK_JOBS=1 \ -DLLVM_PARALLEL_LINK_JOBS=1 \
-DLLVM_INCLUDE_TESTS=OFF \ -DLLVM_INCLUDE_TESTS=OFF \
@@ -445,8 +445,8 @@ cd ../..
``` ```
Then add to your Zig CMake line that you got from the README.md: Then add to your Zig CMake line that you got from the README.md:
`-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug` or `-DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug` or
`-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-assert` depending on whether you want `-DCMAKE_PREFIX_PATH=$HOME/local/llvm22-assert` depending on whether you want
Debug or Release LLVM. Debug or Release LLVM.