Don't explicitly link against libdl.

There is no need to add -ldl explicitly to each program's LDADD, because
the configure test for dladdr does that for us.

controller/Makefile.am

@@ -5,7 +5,7 @@ man_MANS = controller.8
 DISTCLEANFILES = controller.8
 
 controller_SOURCES = controller.c
-controller_LDADD = ../lib/libopenflow.la -ldl $(SSL_LIBS)
+controller_LDADD = ../lib/libopenflow.la $(SSL_LIBS)
 
 EXTRA_DIST = controller.8.in
 controller.8: controller.8.in Makefile

secchan/Makefile.am

@@ -9,7 +9,7 @@ man_MANS =
 endif
 
 secchan_SOURCES = secchan.c
-secchan_LDADD = ../lib/libopenflow.la -ldl $(SSL_LIBS)
+secchan_LDADD = ../lib/libopenflow.la $(SSL_LIBS)
 
 EXTRA_DIST = secchan.8.in
 DISTCLEANFILES = secchan.8

switch/Makefile.am

@@ -17,7 +17,7 @@ switch_SOURCES = \
 	table-hash.c \
 	table-linear.c
 
-switch_LDADD = ../lib/libopenflow.la -ldl $(SSL_LIBS)
+switch_LDADD = ../lib/libopenflow.la $(SSL_LIBS)
 
 EXTRA_DIST = switch.8.in
 DISTCLEANFILES = switch.8

tests/Makefile.am

@@ -13,5 +13,5 @@ test_type_props_SOURCES = test-type-props.c
 
 check_PROGRAMS += test-dhcp-client
 test_dhcp_client_SOURCES = test-dhcp-client.c
-test_dhcp_client_LDADD = ../lib/libopenflow.la -ldl
+test_dhcp_client_LDADD = ../lib/libopenflow.la