+ifeq ($(uname_s),FreeBSD)
+ format := elf
+ LDFLAGS += -Wl,-soname,$(soname)
+endif
+
+ifeq ($(format),elf)
+ # On ELf-based systems, the following conventions apply (see dhweeler's
+ # Program Library HOWTO):
+ #
+ # The soname has the prefix ``lib'', the name of the library, the
+ # phrase ``.so'', followed by a period and a version number that is
+ # incremented whenever the interface changes.
+ soname := lib$(libname).so.$(x)
+
+ # The real name adds to the soname a period, a minor number, another
+ # period, and the release number.
+ realname := $(soname).$(y).$(z)
+
+ # In addition, there's the name that the compiler uses when requesting
+ # a library, (I'll call it the ``linker name''), which is simply the
+ # soname without any version number.
+ linkername := lib$(libname).so
+ LDFLAGS += --shared
+endif
+
+