udf_example.c, udf.test, Makefile.am:

  Converted "udf_example.cc" to C, avoids C++ runtime lib dependency (bug#21336)

mysql-test/t/udf.test

 --source include/have_udf.inc
 #
-# To run this tests the "sql/udf_example.cc" need to be compiled into
+# To run this tests the "sql/udf_example.c" need to be compiled into
 # udf_example.so and LD_LIBRARY_PATH should be setup to point out where
 # the library are.
 #

sql/Makefile.am

@@ -116,7 +116,7 @@ DEFS =			-DMYSQL_SERVER \
 			@DEFS@
 
 BUILT_SOURCES =		sql_yacc.cc sql_yacc.h lex_hash.h
-EXTRA_DIST =		udf_example.cc $(BUILT_SOURCES)
+EXTRA_DIST =		$(BUILT_SOURCES)
 DISTCLEANFILES =        lex_hash.h
 AM_YFLAGS =		-d
 
@@ -155,7 +155,7 @@ lex_hash.h:	gen_lex_hash$(EXEEXT)
 
 # For testing of udf_example.so
 noinst_LTLIBRARIES= udf_example.la
-udf_example_la_SOURCES= udf_example.cc
+udf_example_la_SOURCES= udf_example.c
 udf_example_la_LDFLAGS= -module -rpath $(pkglibdir)