Tidy and reduce ART library dependencies on the host.

Move to shared rather than static libraries. Avoids capture of all static
libraries library dependencies.

Change-Id: I2be96e92dad4ed1842d76b044745f2a2e15372eb
diff --git a/runtime/Android.mk b/runtime/Android.mk
index 6f6dcbc..a2fc24a 100644
--- a/runtime/Android.mk
+++ b/runtime/Android.mk
@@ -457,15 +457,21 @@
   LOCAL_C_INCLUDES += $$(ART_C_INCLUDES)
   LOCAL_C_INCLUDES += art/sigchainlib
 
-  LOCAL_SHARED_LIBRARIES += liblog libnativehelper libnativebridge
+  LOCAL_SHARED_LIBRARIES := libnativehelper libnativebridge libsigchain
   include external/libcxx/libcxx.mk
   LOCAL_SHARED_LIBRARIES += libbacktrace_libc++
   ifeq ($$(art_target_or_host),target)
-    LOCAL_SHARED_LIBRARIES += libcutils libdl libutils libsigchain
+    LOCAL_SHARED_LIBRARIES += libdl
+    # ZipArchive support, the order matters here to get all symbols.
     LOCAL_STATIC_LIBRARIES := libziparchive libz
+    # For android::FileMap used by libziparchive.
+    LOCAL_SHARED_LIBRARIES += libutils
+    # For liblog, atrace, properties, ashmem, set_sched_policy and socket_peer_is_trusted.
+    LOCAL_SHARED_LIBRARIES += libcutils
   else # host
-    LOCAL_STATIC_LIBRARIES += libcutils libziparchive-host libz libutils
-    LOCAL_SHARED_LIBRARIES += libsigchain
+    LOCAL_SHARED_LIBRARIES += libziparchive-host
+    # For ashmem_create_region.
+    LOCAL_STATIC_LIBRARIES += libcutils
   endif
   ifeq ($$(ART_USE_PORTABLE_COMPILER),true)
     include $$(LLVM_GEN_INTRINSICS_MK)