1 files changed, 4 insertions, 2 deletions

diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index 04007a538..407c5c640 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -193,8 +193,10 @@ if (ANDROID)
    endif()
 endif()
 
-if (UNIX AND NOT APPLE)
-    add_subdirectory(gamemode)
+if (UNIX AND NOT APPLE AND NOT TARGET gamemode::headers)
+    add_library(gamemode INTERFACE)
+    target_include_directories(gamemode INTERFACE gamemode)
+    add_library(gamemode::headers ALIAS gamemode)
 endif()
 
 # Breakpad