From edd3f38574efdb104c8cf69f4b25f7cf2b460db5 Mon Sep 17 00:00:00 2001
From: Kuba Mracek <mracek@apple.com>
Date: Fri, 28 Aug 2020 09:06:54 -0700
Subject: [PATCH] When building standalone stdlib, explicitly use C/C++
 compilers from NATIVE_CLANG_TOOLS_PATH

---
 utils/build-script-impl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/utils/build-script-impl b/utils/build-script-impl
index 078bca624b642..2f893a273df4c 100755
--- a/utils/build-script-impl
+++ b/utils/build-script-impl
@@ -1407,6 +1407,13 @@ for host in "${ALL_HOSTS[@]}"; do
         fi
     fi
 
+    if [[ "${NATIVE_CLANG_TOOLS_PATH}" ]] ; then
+        common_cmake_options_host+=(
+                -DCMAKE_C_COMPILER="${NATIVE_CLANG_TOOLS_PATH}/clang"
+                -DCMAKE_CXX_COMPILER="${NATIVE_CLANG_TOOLS_PATH}/clang++"
+            )
+    fi
+
     llvm_cmake_options=(
         "${llvm_cmake_options[@]}"
         -DCMAKE_INSTALL_PREFIX:PATH="$(get_host_install_prefix ${host})"