build: add library build directory to runtime search path

Make life easier by searching in the build directory first.

Signed-off-by: Patrick McHardy <kaber@trash.net>

Makefile.rules.in

@@ -75,6 +75,7 @@ $(eval $(call generic_template,$(1)))
 $(SUBDIR)lib$(1).so:	$$($(1)-extra-targets) $$($(1)-obj)
 			@echo -e "  LD\t\t$$@"
 			$$(CC) -shared -Wl,-soname,lib$(1).so.0 $$($(1)-obj) $$(LDFLAGS) -o $$@
+			$(LN_S) -f lib$(1).so $$@.0
 all_targets		+= $(SUBDIR)lib$(1).so
 
 $(1)-install:

example/Makefile.in

@@ -1,4 +1,4 @@
-LDFLAGS		+= -Lsrc -ldect
+LDFLAGS		+= -Wl,-rpath $(PWD)/src -Lsrc -ldect
 PROGRAMS	+= test mm discover
 
 test-destdir	:= usr/bin

src/.gitignore

@@ -1 +1 @@
-libdect.so
+libdect.so*