[MPlayer-users] What's will be done in libavcodec/Makefile

[boku]

Dear all,
   Just wanna make sure what will be done with these code for the
external libraries in the Makefile shown below:
----
# external codec libraries
OBJS-$(CONFIG_LIBA52)                  += liba52.o
OBJS-$(CONFIG_LIBAMR)                  += libamr.o
OBJS-$(CONFIG_LIBFAAC)                 += libfaac.o
OBJS-$(CONFIG_LIBFAAD)                 += libfaad.o
OBJS-$(CONFIG_LIBX264)                 += libx264.o
OBJS-$(CONFIG_LIBXVID)                 += libxvidff.o libxvid_rc.o
...

Does it mean that all these *.o will be made if the CONFIG_XXX is a "yes"?
Thank you!

BR,
boku