diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6c59d13120..ed7c9f4431 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -134,6 +134,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android")
         "-I/usr/lib/swift") # dispatch
 endif()
 
+include(GNUInstallDirs)
 include(FoundationSwiftSupport)
 
 add_subdirectory(Sources)