diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index a515a20418b5f..8c5713296f67f 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -1072,12 +1072,7 @@ endif()
 set(LLVM_TARGET_TRIPLE_ENV CACHE STRING "The name of environment variable to override default target. Disabled by blank.")
 mark_as_advanced(LLVM_TARGET_TRIPLE_ENV)
 
-if(CMAKE_SYSTEM_NAME MATCHES "BSD|Linux|OS390|AIX")
-  set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR_default ON)
-else()
-  set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR_default OFF)
-endif()
-set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR ${LLVM_ENABLE_PER_TARGET_RUNTIME_DIR_default} CACHE BOOL
+set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR ON CACHE BOOL
   "Enable per-target runtimes directory")
 
 set(LLVM_PROFDATA_FILE "" CACHE FILEPATH