Description: disable broken check for "mysql.h".
~~~~
CMake Error at FindMySQL.cmake:509 (message):
  Could not find "mysql.h" in
  "/usr/include/mariadb;/usr/include/mariadb/mysql" found from running
  "/usr/bin/mysql_config"
~~~~

--- a/FindMySQL.cmake
+++ b/FindMySQL.cmake
@@ -504,12 +504,12 @@
     message(FATAL_ERROR "Could not find the include dir from running "
                         "\"${MYSQL_CONFIG_EXECUTABLE}\"")
   endif()
 
-  if(NOT EXISTS "${MYSQL_INCLUDE_DIR}/mysql.h")
-    message(FATAL_ERROR "Could not find \"mysql.h\" in \"${MYSQL_INCLUDE_DIR}\" "
-                        "found from running \"${MYSQL_CONFIG_EXECUTABLE}\"")
-  endif()
+#  if(NOT EXISTS "${MYSQL_INCLUDE_DIR}/mysql.h")
+#    message(FATAL_ERROR "Could not find \"mysql.h\" in \"${MYSQL_INCLUDE_DIR}\" "
+#                        "found from running \"${MYSQL_CONFIG_EXECUTABLE}\"")
+#  endif()
 
 else()
 
   if(FINDMYSQL_DEBUG)