--- CMakeLists.txt.orig	2014-08-15 07:06:59 UTC
+++ CMakeLists.txt
@@ -62,8 +62,8 @@
     SET(LIBNAME openal)
 
     # These are needed on non-Windows systems for extra features
-    ADD_DEFINITIONS(-D_GNU_SOURCE=1 -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700)
-    SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_GNU_SOURCE=1 -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700")
+    ADD_DEFINITIONS(-D_GNU_SOURCE=1)
+    SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_GNU_SOURCE=1")
 ENDIF()
 
 # Set defines for large file support
@@ -186,7 +186,7 @@
 # Check if we have C11 _Atomic
 CHECK_C_SOURCE_COMPILES(
 "#include <stdatomic.h>
- int _Atomic foo;
+ const int _Atomic foo = ATOMIC_VAR_INIT(~0);
  int main()
  {
      return atomic_load(&foo);
@@ -523,10 +523,6 @@
 
     CHECK_SYMBOL_EXISTS(pthread_mutex_timedlock pthread.h HAVE_PTHREAD_MUTEX_TIMEDLOCK)
 
-    CHECK_LIBRARY_EXISTS(rt clock_gettime "" HAVE_LIBRT)
-    IF(HAVE_LIBRT)
-        SET(EXTRA_LIBS rt ${EXTRA_LIBS})
-    ENDIF()
 ENDIF()
 
 # Check for a 64-bit type
@@ -1108,7 +1104,7 @@
         DESTINATION include/AL
 )
 INSTALL(FILES "${OpenAL_BINARY_DIR}/openal.pc"
-        DESTINATION "lib${LIB_SUFFIX}/pkgconfig")
+        DESTINATION "libdata/pkgconfig")
 
 
 MESSAGE(STATUS "")