From 895054f7fe1c15e1dbf84c2c0fc5ab5da0cb7c16 Mon Sep 17 00:00:00 2001
From: Anton Alkin <anton.alkin@cern.ch>
Date: Thu, 15 Aug 2024 12:45:56 +0200
Subject: [PATCH] arrow: use clang from llvm installation to avoid stack
 probing issue with llvm@18

---
 arrow.sh | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arrow.sh b/arrow.sh
index 5cd2b8a6fb..4cc89602c9 100644
--- a/arrow.sh
+++ b/arrow.sh
@@ -61,7 +61,16 @@ rsync -a --exclude='**/.git' --delete --delete-excluded "$SOURCEDIR/" ./src_tmp/
 
 case $ARCHITECTURE in
   osx*)
-   CLANG_EXECUTABLE=/usr/bin/clang
+   # use default llvm from homebrew if available
+   if [ -d `brew --prefix llvm` ]; then
+     CLANG_EXECUTABLE=`brew --prefix llvm`/bin/clang
+   else
+     # fall back to llvm@17
+     if [ -d `brew --prefix llvm`@17 ]; then
+       CLANG_EXECUTABLE=`brew --prefix llvm`@17/bin/clang
+     fi
+
+   fi
    ;;
   *)
    CLANG_EXECUTABLE=${CLANG_ROOT}/bin-safe/clang