diff -up ./ext/recode/config9.m4.recode ./ext/recode/config9.m4
--- ./ext/recode/config9.m4.recode	2019-05-21 12:19:27.614484934 +0200
+++ ./ext/recode/config9.m4	2019-05-21 12:20:41.534895969 +0200
@@ -1,13 +1,5 @@
 dnl Check for extensions with which Recode can not work
 if test "$PHP_RECODE" != "no"; then
-  test "$PHP_IMAP"  != "no" && recode_conflict="$recode_conflict imap"
-
-  if test -n "$MYSQL_LIBNAME"; then
-    PHP_CHECK_LIBRARY($MYSQL_LIBNAME, hash_insert, [
-      recode_conflict="$recode_conflict mysql"
-    ])
-  fi
-
   if test -n "$recode_conflict"; then
     AC_MSG_ERROR([recode extension can not be configured together with:$recode_conflict])
   fi