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-rw-r--r--cmake/Modules/CMakePolicy.cmake5
1 files changed, 5 insertions, 0 deletions
diff --git a/cmake/Modules/CMakePolicy.cmake b/cmake/Modules/CMakePolicy.cmake
index 0ec32ad8637f..8a3445c40cb5 100644
--- a/cmake/Modules/CMakePolicy.cmake
+++ b/cmake/Modules/CMakePolicy.cmake
@@ -1,5 +1,10 @@
# CMake policy settings shared between LLVM projects
+# CMP0091: MSVC runtime library flags are selected by an abstraction.
+# New in CMake 3.15. https://cmake.org/cmake/help/latest/policy/CMP0091.html
+if(POLICY CMP0091)
+ cmake_policy(SET CMP0091 OLD)
+endif()
# CMP0114: ExternalProject step targets fully adopt their steps.
# New in CMake 3.19: https://cmake.org/cmake/help/latest/policy/CMP0114.html
if(POLICY CMP0114)