Update LLVM version from 15 to 17 (from develop)

INSTALL.md

@@ -5,7 +5,7 @@
 ```shell
 sudo apt update
 sudo apt install      \
-  clang-15            \
+  clang-17            \
   cmake               \
   curl                \
   flex                \
@@ -18,8 +18,8 @@ sudo apt install      \
   libmpfr-dev         \
   libunwind-dev       \
   libyaml-dev         \
-  lld-15              \
-  llvm-15-tools       \
+  lld-17              \
+  llvm-17-tools       \
   maven               \
   openjdk-17-jdk      \
   pkg-config          \
@@ -44,7 +44,7 @@ brew install  \
   jemalloc    \
   libffi
   libyaml     \
-  llvm@15     \
+  llvm@17     \
   maven       \
   mpfr        \
   pkg-config  \
@@ -81,20 +81,20 @@ add it your `env` (`.zshrc`, `.bashrc`, etc.), so that the Homebrew
 installation of LLVM gets picked up correctly. We recommend adding it to
 your shell profile.
 ```shell
-export LLVM_DIR=$($(brew --prefix llvm@15)/bin/llvm-config --cmakedir)
+export LLVM_DIR=$($(brew --prefix llvm@17)/bin/llvm-config --cmakedir)
 ```
 
 If you don't usually use the `clang` from your Homebrew installation as
 your default compiler, you can set the following CMake flg to use these
 `clang` and `clang++`:
 ```shell
--DCMAKE_C_COMPILER="$(brew --prefix llvm@15)/bin/clang" \
--DCMAKE_CXX_COMPILER="$(brew --prefix llvm@15)/bin/clang++"
+-DCMAKE_C_COMPILER="$(brew --prefix llvm@17)/bin/clang" \
+-DCMAKE_CXX_COMPILER="$(brew --prefix llvm@17)/bin/clang++"
 ```
 Once again, we recommend adding them and other llvm binaries to your
 `PATH` in your shell profile:
 ```shell
-export PATH="$(brew --prefix llvm@15)/bin:$PATH"
+export PATH="$(brew --prefix llvm@17)/bin:$PATH"
 ```
 
 Some tests rely on GNU Grep options, which are not available on macOS by

scripts/clang-tidy.sh

@@ -2,17 +2,50 @@
 
 set -euxo pipefail
 
-LLVM_VERSION=15
 BUILD_DIR=build
 
+# Try to detect available LLVM version
 if [[ "$OSTYPE" == "darwin"* ]]; then
-  clang_tidy="$(brew --prefix "llvm@${LLVM_VERSION}")/bin/clang-tidy"
-  driver="$(brew --prefix "llvm@${LLVM_VERSION}")/bin/run-clang-tidy"
+  # On macOS, try LLVM 17 first, then fall back to 15
+  for version in 17 15; do
+    if brew list "llvm@${version}" >/dev/null 2>&1; then
+      LLVM_VERSION=$version
+      clang_tidy="$(brew --prefix "llvm@${version}")/bin/clang-tidy"
+      driver="$(brew --prefix "llvm@${version}")/bin/run-clang-tidy"
+      break
+    fi
+  done
 elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
-  clang_tidy="clang-tidy-$LLVM_VERSION"
-  driver="run-clang-tidy-$LLVM_VERSION"
+  # On Linux, try different versions based on what's available
+  for version in 17 16 15 14; do
+    if command -v "clang-tidy-${version}" >/dev/null 2>&1 && command -v "run-clang-tidy-${version}" >/dev/null 2>&1; then
+      LLVM_VERSION=$version
+      clang_tidy="clang-tidy-${version}"
+      driver="run-clang-tidy-${version}"
+      break
+    fi
+  done
+
+  # Fallback to default clang-tidy if no versioned one is found
+  if [[ -z "${LLVM_VERSION:-}" ]]; then
+    if command -v clang-tidy >/dev/null 2>&1 && command -v run-clang-tidy >/dev/null 2>&1; then
+      LLVM_VERSION="default"
+      clang_tidy="clang-tidy"
+      driver="run-clang-tidy"
+    else
+      echo "Error: No clang-tidy installation found"
+      exit 1
+    fi
+  fi
 fi
 
+if [[ -z "${LLVM_VERSION:-}" ]]; then
+  echo "Error: No suitable LLVM/clang-tidy installation found"
+  exit 1
+fi
+
+echo "Using LLVM version: ${LLVM_VERSION}"
+
 source_dirs=(
   bindings
   include