Attribute used is correctly supported by the Intel C compiler since version 11.1.

libavutil/mem.h

@@ -29,7 +29,7 @@
 #include "attributes.h"
 #include "avutil.h"
 
-#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1200 || defined(__SUNPRO_C)
+#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C)
     #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
     #define DECLARE_ASM_CONST(n,t,v)    const t __attribute__ ((aligned (n))) v
 #elif defined(__TI_COMPILER_VERSION__)