From 49fd154829604cbe050e51694aa4932a6e00609d Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Tue, 22 Nov 2016 14:50:55 -0800
Subject: [PATCH] Update cmake scripts to handle policy 0054

---
 CMakeLists.txt                        | 3 +++
 cmake/CheckSharedFunctionExists.cmake | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3dd51d48..6ec81aed 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,9 @@ IF(COMMAND CMAKE_POLICY)
     IF(POLICY CMP0042)
         CMAKE_POLICY(SET CMP0042 NEW)
     ENDIF(POLICY CMP0042)
+    IF(POLICY CMP0054)
+        CMAKE_POLICY(SET CMP0054 NEW)
+    ENDIF(POLICY CMP0054)
 ENDIF(COMMAND CMAKE_POLICY)
 
 SET(CMAKE_MODULE_PATH "${OpenAL_SOURCE_DIR}/cmake")
diff --git a/cmake/CheckSharedFunctionExists.cmake b/cmake/CheckSharedFunctionExists.cmake
index 7975f233..c691fa9c 100644
--- a/cmake/CheckSharedFunctionExists.cmake
+++ b/cmake/CheckSharedFunctionExists.cmake
@@ -34,7 +34,7 @@
 #  License text for the above reference.)
 
 MACRO(CHECK_SHARED_FUNCTION_EXISTS SYMBOL FILES LIBRARY LOCATION VARIABLE)
-  IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+  IF(NOT DEFINED "${VARIABLE}" OR "x${${VARIABLE}}" STREQUAL "x${VARIABLE}")
     SET(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
     SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
     IF(CMAKE_REQUIRED_LIBRARIES)
@@ -88,5 +88,5 @@ MACRO(CHECK_SHARED_FUNCTION_EXISTS SYMBOL FILES LIBRARY LOCATION VARIABLE)
         "${OUTPUT}\nFile ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c:\n"
         "${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
     ENDIF(${VARIABLE})
-  ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
+  ENDIF(NOT DEFINED "${VARIABLE}" OR "x${${VARIABLE}}" STREQUAL "x${VARIABLE}")
 ENDMACRO(CHECK_SHARED_FUNCTION_EXISTS)