config9.m4.diff

diff --git a/config9.m4 b/config9.m4
index ce63132..73b2298 100644
--- a/config9.m4
+++ b/config9.m4
@@ -353,6 +353,8 @@ dnl ----
                        AC_DEFINE([PHP_HTTP_HAVE_PHP_RAPHF_H], [1], [Have ext/raphf support])
                        PHP_ADD_INCLUDE([$HTTP_EXT_RAPHF_INCDIR])
                fi
+       ], [
+               AC_MSG_ERROR([Please install pecl/raphf])
        ])
 
 dnl ----
@@ -379,6 +381,8 @@ dnl ----
                        AC_DEFINE([PHP_HTTP_HAVE_PHP_PROPRO_H], [1], [Have ext/propro support])
                        PHP_ADD_INCLUDE([$HTTP_EXT_PROPRO_INCDIR])
                fi
+       ], [
+               AC_MSG_ERROR([Please install pecl/raphf])
        ])
 
 PHP_ARG_WITH([http-shared-deps], [whether to depend on extensions which have been built shared],