From 03567b4c1be355c882c342798ea51ed3bd17a759 Mon Sep 17 00:00:00 2001
From: Junru Shao <junrushao1994@gmail.com>
Date: Sun, 21 Jun 2020 20:53:39 -0700
Subject: [PATCH] [Bugfix][Build] Fix building with LLVM-10 on macOS (#5859)

---
 cmake/util/FindLLVM.cmake | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/cmake/util/FindLLVM.cmake b/cmake/util/FindLLVM.cmake
index e50c7d0..297c8d4 100644
--- a/cmake/util/FindLLVM.cmake
+++ b/cmake/util/FindLLVM.cmake
@@ -34,7 +34,16 @@ macro(find_llvm use_llvm)
   set(LLVM_CONFIG ${use_llvm})
   if(LLVM_CONFIG STREQUAL "ON")
     find_package(LLVM REQUIRED CONFIG)
-    llvm_map_components_to_libnames(LLVM_LIBS all)
+    llvm_map_components_to_libnames(LLVM_LIBS "all")
+    if (NOT LLVM_LIBS)
+      message(STATUS "Not found - LLVM_LIBS")
+      message(STATUS "Fall back to using llvm-config")
+      set(LLVM_CONFIG "llvm-config")
+    else()
+      set(LLVM_CONFIG "ON")
+    endif()
+  endif()
+  if(LLVM_CONFIG STREQUAL "ON")
     list (FIND LLVM_LIBS "LLVM" _llvm_dynlib_index)
     if (${_llvm_dynlib_index} GREATER -1)
       set(LLVM_LIBS LLVM)
-- 
2.7.4