*** lib/vtls/schannel.c.orig    Thu Mar 30 23:13:48 2017
--- lib/vtls/schannel.c Thu Mar 30 23:13:54 2017
***************
*** 48,49 ****
--- 48,53 ----

+ #if defined(_AIX)
+ #  define HAS_ALPN 0
+ #endif
+
  #include "curl_sspi.h"
*** lib/vtls/openssl.c.orig     Thu Mar 30 23:20:11 2017
--- lib/vtls/openssl.c  Thu Mar 30 23:33:55 2017
***************
*** 1594,1596 ****
  #if OPENSSL_VERSION_NUMBER >= 0x10002000L \
!     && !defined(OPENSSL_NO_TLSEXT)
  #  define HAS_ALPN 1
--- 1594,1596 ----
  #if OPENSSL_VERSION_NUMBER >= 0x10002000L \
!     && !defined(OPENSSL_NO_TLSEXT) && !(_AIX)
  #  define HAS_ALPN 1