Android 4 requires LOCAL_MODULE_TAGS to be set for all modules.

Because all packages are now marked as optional executables that are to
be installed on the final system have to be added to PRODUCT_PACKAGES in
build/target/product/core.mk.  Dependencies (such as libraries) are
installed automatically.

src/libtncif/Android.mk

@@ -16,6 +16,8 @@ LOCAL_CFLAGS := $(strongswan_CFLAGS)
 
 LOCAL_MODULE := libtncif
 
+LOCAL_MODULE_TAGS := optional
+
 LOCAL_ARM_MODE := arm
 
 LOCAL_PRELINK_MODULE := false