MB-16435: OS X: Add correct rpath for vbuckettool & vbucketkeygen

Add explicit runtime linker search paths to vbuckettool &
vbucketkeygen so they can locate their runtime library dependancies
without an external DYLD_LIBRARY_PATH being set (which is no longer
possible from OS X 10.11 "El Capitan" onwards).

Change-Id: I74bdaa24cad5d09fd6653ccca1e7278d29f8536b
Reviewed-on: http://review.couchbase.org/55759
Tested-by: buildbot <[email protected]>
Reviewed-by: Trond Norbye <[email protected]>

Author: daverigby

CMakeLists.txt

@@ -205,9 +205,19 @@ ADD_EXECUTABLE(moxi
 
 TARGET_LINK_LIBRARIES(moxi conflate vbucket platform mcd ${LIBEVENT_LIBRARIES} ${COUCHBASE_NETWORK_LIBS} ${UMEM_LIBRARY})
 
-INSTALL(TARGETS moxi vbucketkeygen vbuckettool
+INSTALL(TARGETS moxi
         RUNTIME DESTINATION bin)
 
+INSTALL(TARGETS vbucketkeygen vbuckettool
+        RUNTIME DESTINATION bin/tools)
+
+IF (APPLE)
+   # Tools are installed in bin/tools/; need to map from there to lib/
+   SET_TARGET_PROPERTIES(vbucketkeygen vbuckettool
+                         PROPERTIES
+                         INSTALL_RPATH "@executable_path/../../lib")
+ENDIF ()
+
 ADD_TEST(moxi-sizes moxi_sizes)
 ADD_TEST(moxi-htgram-test moxi_htgram_test)