Remove SEND_ERROR to continue configuration

CMakeLists.txt

@@ -13,7 +13,7 @@ if(DEFINED ENV{AMDAPPSDKROOT})
     message("--   found AMDAPPSDKROOT")
     set(HAVE_AMDAPPSDK "$ENV{AMDAPPSDKROOT}")
 else()
-    message(SEND_ERROR "--   not found")
+    message("--   not found")
 endif()
 
 set(AMDAPPSDK_INCLUDE_DIRS "$ENV{AMDAPPSDKROOT}/include")