diff -uap mod_http2-1.14.0/mod_http2/h2_from_h1.c.buildfix mod_http2-1.14.0/mod_http2/h2_from_h1.c

--- mod_http2-1.14.0/mod_http2/h2_from_h1.c.buildfix	2019-02-12 13:30:56.000000000 +0000

+++ mod_http2-1.14.0/mod_http2/h2_from_h1.c	2019-03-14 10:35:46.365678537 +0000

@@ -35,6 +35,10 @@

 #include "h2_task.h"

 #include "h2_util.h"

+#ifndef AP_STATUS_IS_HEADER_ONLY

+#define AP_STATUS_IS_HEADER_ONLY(x) ((x) == HTTP_NO_CONTENT || \

+                                     (x) == HTTP_NOT_MODIFIED)

+#endif

 /* This routine is called by apr_table_do and merges all instances of

  * the passed field values into a single array that will be further