diff --git a/internal/core/CMakeLists.txt b/internal/core/CMakeLists.txt
index e82f4dce79f..0576b43de8a 100644
--- a/internal/core/CMakeLists.txt
+++ b/internal/core/CMakeLists.txt
@@ -25,18 +25,26 @@ cmake_minimum_required( VERSION 3.18 )
 # add_compile_options(-fno-stack-protector -fno-omit-frame-pointer -fno-var-tracking -fsanitize=address)
 # add_link_options(-fno-stack-protector -fno-omit-frame-pointer -fno-var-tracking -fsanitize=address)
 
+project(core)
 if ( APPLE )
     set( CMAKE_CROSSCOMPILING TRUE )
     set( RUN_HAVE_GNU_POSIX_REGEX 0 )
-    set( CMAKE_C_COMPILER "/usr/local/opt/llvm/bin/clang" )
-    set( CMAKE_CXX_COMPILER "/usr/local/opt/llvm/bin/clang++" )
+
+    execute_process (
+        COMMAND bash -c "brew --prefix llvm"
+	OUTPUT_VARIABLE LLVM_PREFIX
+    )
+
+    #set( CMAKE_C_COMPILER "${LLVM_PREFIX}/bin/clang" )
+    #message( STATUS "Check clang set to ${LLVM_PREFIX}/bin/clang")
+    #set( CMAKE_CXX_COMPILER "${LLVM_PREFIX}/bin/clang++" )
+    #message( STATUS "Check clang not exist, set to ${LLVM_PREFIX}/bin/clang++")
 endif ()
 
 add_definitions(-DELPP_THREAD_SAFE)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 message( STATUS "Building using CMake version: ${CMAKE_VERSION}" )
 
-project(core)
 include(CheckCXXCompilerFlag)
 if ( APPLE )
     message(STATUS "==============Darwin Environment==============")
diff --git a/scripts/core_build.sh b/scripts/core_build.sh
index a4e06028b2d..fac3a32a0cd 100755
--- a/scripts/core_build.sh
+++ b/scripts/core_build.sh
@@ -169,10 +169,31 @@ if [[ ${MAKE_CLEAN} == "ON" ]]; then
   exit 0
 fi
 
+
+function determineLLVMPrefix()
+{
+        llvm_prefix="$(brew --prefix llvm)"
+
+        if [ -d "$llvm_prefix" ]; then
+                echo "set llvm_prefix to $llvm_prefix"
+        else
+                llvm_hard_prefix=`ls -d ${llvm_prefix}* | tail -n 1`
+                if [ -d "$llvm_hard_prefix" ]; then
+                        llvm_prefix=${llvm_hard_prefix}
+                        echo "set llvm_prefix to ${llvm_prefix}"
+                else
+                        echo "llvm not found"
+                fi
+        fi
+}
+
+
+
 unameOut="$(uname -s)"
 case "${unameOut}" in
     Darwin*)
-        llvm_prefix="$(brew --prefix llvm)"
+        #llvm_prefix="$(brew --prefix llvm)"
+	determineLLVMPrefix
         export CLANG_TOOLS_PATH="${llvm_prefix}/bin"
         export CC="${llvm_prefix}/bin/clang"
         export CXX="${llvm_prefix}/bin/clang++"