Bug#18564 Test failure due to test not checking preconditions

 - Add variable "have_dynamic_loading" and use it to check if the udf test should be run.


mysql-test/include/have_udf.inc:
  Use variable "have_dynamic_loading" to to determine if there is support for udf's
mysql-test/r/have_udf.require:
  Use variable "have_dynamic_loading" to to determine if there is support for udf's
mysql-test/t/disabled.def:
  Remove udf from disabled
sql/mysql_priv.h:
  Add have_dlopen variable
sql/mysqld.cc:
  Add have_dlopen variable
sql/set_var.cc:
  Add have_dlopen variable and name it "have_dynamic_loading" in "SHOW VARIABLES"

1 files changed, 5 insertions, 9 deletions

diff --git a/mysql-test/include/have_udf.inc b/mysql-test/include/have_udf.inc
index a22b2a52e61..b6e6f0f2516 100644
--- a/mysql-test/include/have_udf.inc
+++ b/mysql-test/include/have_udf.inc
@@ -1,12 +1,8 @@
 #
-# To check if the udf_example.so is available,
-# try to load one function from it.
-#
+# Check if server has support for loading udf's
+# i.e it will support dlopen
 #
 --require r/have_udf.require
---disable_abort_on_error
-CREATE FUNCTION metaphon RETURNS STRING SONAME 'udf_example.so';
---disable_query_log
-DROP FUNCTION metaphon;
---enable_query_log
---enable_abort_on_error
+disable_query_log;
+show variables like "have_dynamic_loading";
+enable_query_log;