Bug#11835 CREATE FUNCTION crashes server

 - Don't look for 'dl_open' if mysqld is compiled with "-all-static" 


configure.in:
  No need to check for dlopen when mysqld is linked with -all-static 
  as it won't be able to load any functions (and in some cases segfaults)

configure.in

@@ -1632,16 +1632,35 @@ else
 fi
 #---END:
 
-# Check for dlopen, needed for user definable functions
-# This must be checked after threads on AIX
-# We only need this for mysqld, not for the clients.
+# dlopen, dlerror
+case $with_mysqld_ldflags in
+
+  *-all-static*)
+    # No need to check for dlopen when mysqld is linked with
+    # -all-static as it won't be able to load any functions.
+
+    ;;
+
+  *)
+    # Check for dlopen, needed for user definable functions
+    # This must be checked after threads on AIX
+    # We only need this for mysqld, not for the clients.
+
+    my_save_LIBS="$LIBS"
+    LIBS=""
+    AC_CHECK_LIB(dl,dlopen)
+    LIBDL=$LIBS
+    LIBS="$my_save_LIBS"
+    AC_SUBST(LIBDL)
+
+    my_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBDL"
+    AC_CHECK_FUNCS(dlopen dlerror)
+    LIBS="$my_save_LIBS"
+
+    ;;
+esac
 
-my_save_LIBS="$LIBS"
-LIBS=""
-AC_CHECK_LIB(dl,dlopen)
-LIBDL=$LIBS
-LIBS="$my_save_LIBS"
-AC_SUBST(LIBDL)
 
 # System characteristics
 case $SYSTEM_TYPE in
@@ -2005,11 +2024,6 @@ then
 fi]
 )
 
-my_save_LIBS="$LIBS"
-LIBS="$LIBS $LIBDL"
-AC_CHECK_FUNCS(dlopen dlerror)
-LIBS="$my_save_LIBS"
-
 # Check definition of gethostbyaddr_r (glibc2 defines this with 8 arguments)
 ac_save_CXXFLAGS="$CXXFLAGS"
 AC_CACHE_CHECK([style of gethost* routines], mysql_cv_gethost_style,