Notes for installing/updating LLVM on macOS High Sierra

LLVM on High Sierra.md

Installing/Updating LLVM on macOS High Sierra

Updated: 2023-03-19

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Installing LLVM (14)

brew install --debug llvm@14
...
 - raise
 - ignore
 - backtrace
 - irb
 - shell
Choose an action: 5
...
cd llvm/build
cmake . -DLLVM_CREATE_XCODE_TOOLCHAIN=On
...
nano ../../lldb/source/Host/macosx/objcxx/HostInfoMacOSX.mm

You need to change this line:

    if (cputype == CPU_TYPE_ARM64 && cpusubtype == CPU_SUBTYPE_ARM64E) {

to:

    if (cputype == CPU_TYPE_ARM64) {

cmake --build .
cmake --build . --target install
cmake --build . --target install-xcode-toolchain

Then, press control + D to return to debug menu.

Choose 2 (ignore) two times:

 - raise
 - ignore
 - backtrace
 - irb
 - shell
Choose an action: 2

https://stackoverflow.com/questions/69906053/how-to-install-llvm13-with-homerew-on-macos-high-sierra-10-13-6-got-built-tar

Updating LLVM

Dealing with the dependencies

Cannot install isl due to error: call to unavailable member function 'value' ...

Build it with LLVM's clang

brew install isl --cc=llvm_clang