authorgravatar for alex@alexrp.comAlex Rønne Petersen <alex@alexrp.com> 2026-08-03 14:57:45+02:00
committergravatar for alex@alexrp.comAlex Rønne Petersen <alex@alexrp.com> 2026-10-07 00:30:50+02:00
log3a2f2614e1af0713b98a8b26c6848f705649f4b4
tree30265f6a919293e55d214e846b88d1db734b6284
parent6c78e9250de36f2e21e710940e6f8d0e8516556f
signature Signed by SSH key SHA256:7B/LJ7bpR1eX8aCXSr4mtd5M45VMPKcx9zY8e95b5QM

README: update to LLVM 23

1 files changed, 41 insertions(+), 41 deletions(-)

README.md+41-41
......@@ -47,7 +47,7 @@ Ensure you have the required dependencies:
4747
4848 * CMake >= 3.15
4949 * System C/C++ Toolchain
50 * LLVM, Clang, LLD development libraries, version 22.x, compiled with the
50 * LLVM, Clang, LLD development libraries, version 23.x, compiled with the
5151 same system C/C++ toolchain.
5252 - If the system package manager lacks these libraries, or has them misconfigured,
5353 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
257257
258258Install [CMake](https://cmake.org/), version 3.20.0 or newer.
259259
260[Download LLVM, Clang, and LLD sources](https://releases.llvm.org/download.html#22.0.0)
260[Download LLVM, Clang, and LLD sources](https://releases.llvm.org/download.html#23.0.0)
261261The downloads from llvm lead to the github release pages, where the source's
262will be listed as : `llvm-22.X.X.src.tar.xz`, `clang-22.X.X.src.tar.xz`,
263`lld-22.X.X.src.tar.xz`. Unzip each to their own directory. Ensure no
262will be listed as : `llvm-23.X.X.src.tar.xz`, `clang-23.X.X.src.tar.xz`,
263`lld-23.X.X.src.tar.xz`. Unzip each to their own directory. Ensure no
264264directories have spaces in them. For example:
265265
266 * `C:\Users\Andy\llvm-22.0.0.src`
267 * `C:\Users\Andy\clang-22.0.0.src`
268 * `C:\Users\Andy\lld-22.0.0.src`
266 * `C:\Users\Andy\llvm-23.0.0.src`
267 * `C:\Users\Andy\clang-23.0.0.src`
268 * `C:\Users\Andy\lld-23.0.0.src`
269269
270270Install [Build Tools for Visual Studio
2712712019](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
298298##### Release Mode
299299
300300```bat
301mkdir C:\Users\Andy\llvm-22.0.0.src\build-release
302cd C:\Users\Andy\llvm-22.0.0.src\build-release
303"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 -
301mkdir C:\Users\Andy\llvm-23.0.0.src\build-release
302cd C:\Users\Andy\llvm-23.0.0.src\build-release
303"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-23.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-23.0.0-x86_64-windows-msvc-release-mt -
304304DLLVM_ENABLE_ZLIB=OFF -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_RELEASE=MT
305305msbuild /m -p:Configuration=Release INSTALL.vcxproj
306306```
......@@ -308,10 +308,10 @@ msbuild /m -p:Configuration=Release INSTALL.vcxproj
308308##### Debug Mode
309309
310310```bat
311mkdir C:\Users\Andy\llvm-22.0.0.src\build-debug
312cd C:\Users\Andy\llvm-22.0.0.src\build-debug
313"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 -
314DLLVM_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
311mkdir C:\Users\Andy\llvm-23.0.0.src\build-debug
312cd C:\Users\Andy\llvm-23.0.0.src\build-debug
313"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-23.0.0-x86_64-windows-msvc-debug -
314DLLVM_ENABLE_ZLIB=OFF -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-23.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_DEBUG=MTd
315315msbuild /m INSTALL.vcxproj
316316```
317317
......@@ -322,18 +322,18 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
322322##### Release Mode
323323
324324```bat
325mkdir C:\Users\Andy\lld-22.0.0.src\build-release
326cd C:\Users\Andy\lld-22.0.0.src\build-release
327"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
325mkdir C:\Users\Andy\lld-23.0.0.src\build-release
326cd C:\Users\Andy\lld-23.0.0.src\build-release
327"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-23.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
328328msbuild /m -p:Configuration=Release INSTALL.vcxproj
329329```
330330
331331##### Debug Mode
332332
333333```bat
334mkdir C:\Users\Andy\lld-22.0.0.src\build-debug
335cd C:\Users\Andy\lld-22.0.0.src\build-debug
336"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
334mkdir C:\Users\Andy\lld-23.0.0.src\build-debug
335cd C:\Users\Andy\lld-23.0.0.src\build-debug
336"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-23.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-23.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
337337msbuild /m INSTALL.vcxproj
338338```
339339
......@@ -344,18 +344,18 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
344344##### Release Mode
345345
346346```bat
347mkdir C:\Users\Andy\clang-22.0.0.src\build-release
348cd C:\Users\Andy\clang-22.0.0.src\build-release
349"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
347mkdir C:\Users\Andy\clang-23.0.0.src\build-release
348cd C:\Users\Andy\clang-23.0.0.src\build-release
349"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-23.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-23.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
350350msbuild /m -p:Configuration=Release INSTALL.vcxproj
351351```
352352
353353##### Debug Mode
354354
355355```bat
356mkdir C:\Users\Andy\clang-22.0.0.src\build-debug
357cd C:\Users\Andy\clang-22.0.0.src\build-debug
358"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
356mkdir C:\Users\Andy\clang-23.0.0.src\build-debug
357cd C:\Users\Andy\clang-23.0.0.src\build-debug
358"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-23.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-23.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
359359msbuild /m INSTALL.vcxproj
360360```
361361
......@@ -371,14 +371,14 @@ This is the generally recommended approach.
371371
372372```sh
373373cd ~/Downloads
374git clone --depth 1 --branch release/22.x https://github.com/llvm/llvm-project llvm-project-22
375cd llvm-project-22
376git checkout release/22.x
374git clone --depth 1 --branch release/23.x https://github.com/llvm/llvm-project llvm-project-23
375cd llvm-project-23
376git checkout release/23.x
377377
378378mkdir build-release
379379cd build-release
380380cmake ../llvm \
381 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-assert \
381 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm23-assert \
382382 -DCMAKE_BUILD_TYPE=Release \
383383 -DLLVM_ENABLE_PROJECTS="lld;clang" \
384384 -DLLVM_ENABLE_LIBXML2=OFF \
......@@ -399,16 +399,16 @@ others are in Release mode.
399399
400400```sh
401401cd ~/Downloads
402git clone --depth 1 --branch release/22.x https://github.com/llvm/llvm-project llvm-project-22
403cd llvm-project-22
404git checkout release/22.x
402git clone --depth 1 --branch release/23.x https://github.com/llvm/llvm-project llvm-project-23
403cd llvm-project-23
404git checkout release/23.x
405405
406406# LLVM
407407mkdir llvm/build-debug
408408cd llvm/build-debug
409409cmake .. \
410 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
411 -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
410 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm23-debug \
411 -DCMAKE_PREFIX_PATH=$HOME/local/llvm23-debug \
412412 -DCMAKE_BUILD_TYPE=Debug \
413413 -DLLVM_ENABLE_LIBXML2=OFF \
414414 -DLLVM_ENABLE_TERMINFO=OFF \
......@@ -422,8 +422,8 @@ cd ../..
422422mkdir lld/build-debug
423423cd lld/build-debug
424424cmake .. \
425 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
426 -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
425 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm23-debug \
426 -DCMAKE_PREFIX_PATH=$HOME/local/llvm23-debug \
427427 -DCMAKE_BUILD_TYPE=Release \
428428 -DLLVM_PARALLEL_LINK_JOBS=1 \
429429 -DCMAKE_CXX_STANDARD=17 \
......@@ -435,8 +435,8 @@ cd ../..
435435mkdir clang/build-debug
436436cd clang/build-debug
437437cmake .. \
438 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
439 -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
438 -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm23-debug \
439 -DCMAKE_PREFIX_PATH=$HOME/local/llvm23-debug \
440440 -DCMAKE_BUILD_TYPE=Release \
441441 -DLLVM_PARALLEL_LINK_JOBS=1 \
442442 -DLLVM_INCLUDE_TESTS=OFF \
......@@ -446,8 +446,8 @@ cd ../..
446446```
447447
448448Then add to your Zig CMake line that you got from the README.md:
449`-DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug` or
450`-DCMAKE_PREFIX_PATH=$HOME/local/llvm22-assert` depending on whether you want
449`-DCMAKE_PREFIX_PATH=$HOME/local/llvm23-debug` or
450`-DCMAKE_PREFIX_PATH=$HOME/local/llvm23-assert` depending on whether you want
451451Debug or Release LLVM.
452452
453453