From 3dfae32963d34d29435bd2504909d3fcc36c20c3 Mon Sep 17 00:00:00 2001
From: Florent Castelli <florent.castelli@gmail.com>
Date: Mon, 6 Feb 2017 04:18:59 +0100
Subject: [PATCH] cmake: Fix possible redefinition of imported target in
 FindOpenSLES

---
 CMakeTests/FindOpenSLES.cmake | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/CMakeTests/FindOpenSLES.cmake b/CMakeTests/FindOpenSLES.cmake
index 8dd6569662..b50efc6067 100644
--- a/CMakeTests/FindOpenSLES.cmake
+++ b/CMakeTests/FindOpenSLES.cmake
@@ -18,11 +18,13 @@ find_package_handle_standard_args(OpenSLES  DEFAULT_MSG
                                   OPENSLES_LIBRARY OPENSLES_INCLUDE_DIR)
 
 if(OpenSLES_FOUND)
-  add_library(OpenSLES::OpenSLES UNKNOWN IMPORTED)
-  set_target_properties(OpenSLES::OpenSLES PROPERTIES
-    IMPORTED_LOCATION ${OPENSLES_LIBRARY}
-    INTERFACE_INCLUDE_DIRECTORIES ${OPENSLES_INCLUDE_DIR}
-  )
+  if(NOT TARGET OpenSLES::OpenSLES)
+    add_library(OpenSLES::OpenSLES UNKNOWN IMPORTED)
+    set_target_properties(OpenSLES::OpenSLES PROPERTIES
+      IMPORTED_LOCATION ${OPENSLES_LIBRARY}
+      INTERFACE_INCLUDE_DIRECTORIES ${OPENSLES_INCLUDE_DIR}
+    )
+  endif()
 endif()
 
 mark_as_advanced(OPENSLES_INCLUDE_DIR OPENSLES_LIBRARY )