--- a/auto/os/features
+++ b/auto/os/features
@@ -274,3 +274,43 @@ if [ $ngx_found != yes ]; then
         CORE_LIBS="$CORE_LIBS -lrt"
     fi
 fi
+
+
+if [ $NGX_FILE_AIO = YES ]; then
+    ngx_feature="kqueue AIO support"
+    ngx_feature_name="NGX_HAVE_FILE_AIO"
+    ngx_feature_run=no
+    ngx_feature_incs="#include <aio.h>"
+    ngx_feature_path=
+    ngx_feature_libs=
+    ngx_feature_test="int  n; struct aiocb  iocb;
+                      iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
+                      n = aio_read(&iocb)"
+    . auto/feature
+
+    if [ $ngx_found = yes ]; then
+        CORE_SRCS="$CORE_SRCS $FILE_AIO_SRCS"
+    fi
+fi
+
+
+if [ $NGX_FILE_AIO = YES ]; then
+    ngx_feature="Linux AIO support"
+    ngx_feature_name="NGX_HAVE_FILE_AIO"
+    ngx_feature_run=no
+    ngx_feature_incs="#include <linux/aio_abi.h>
+                      #include <sys/syscall.h>"
+    ngx_feature_path=
+    ngx_feature_libs=
+    ngx_feature_test="int  n = SYS_eventfd;
+                      struct iocb  iocb;
+                      iocb.aio_lio_opcode = IOCB_CMD_PREAD;
+                      iocb.aio_flags = IOCB_FLAG_RESFD;
+                      iocb.aio_resfd = -1;"
+    . auto/feature
+
+    if [ $ngx_found = yes ]; then
+        have=NGX_HAVE_EVENTFD . auto/have
+        CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS"
+    fi
+fi