diff --git a/build-compiler-rt.sh b/build-compiler-rt.sh
index bbcb4ec..1fff641 100755
--- a/build-compiler-rt.sh
+++ b/build-compiler-rt.sh
@@ -111,6 +111,9 @@ for arch in $ARCHS; do
         -DCOMPILER_RT_USE_BUILTINS_LIBRARY=TRUE \
         -DCOMPILER_RT_BUILD_BUILTINS=$BUILD_BUILTINS \
         -DLLVM_CONFIG_PATH="" \
+        -DCMAKE_FIND_ROOT_PATH=$PREFIX/$arch-w64-mingw32 \
+        -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY \
+        -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ONLY \
         -DSANITIZER_CXX_ABI=libc++ \
         -DCMAKE_C_FLAGS_INIT="$CFGUARD_CFLAGS" \
         -DCMAKE_CXX_FLAGS_INIT="$CFGUARD_CFLAGS" \