> > > I see in src/Makefile, motmod-objs
> > > gets emc/motion/motion.o, emc/motion/command.o, etc., but where are
> > > these object files being built from the .c files? Submakefile under
> > > emc/motion only copies headers to ../includes. There is nothing to
> > > compile these source files.
> > >
> I see where the .o files are listed but somewhere in the makefile or
> submakefiles there must be instructions to compile from .c or .cc to form
> those .o files. And I don't see it anywhere.
motmod.o is added to obj-m var with
obj-$(CONFIG_MOTMOD) += motmod.o
then
RTOBJS := $(sort $(foreach mod,$(obj-m),$(call TORTOBJS,$(mod))))
TORTOBJS = $(foreach file,$($(patsubst %.o,%,$(1))-objs), objects/rt$(file))
adds motmod-objs to RTOBJS. and finally the rule call the compiler:
# Rules to make .o (object) files
$(sort $(RTOBJS)) : objects/rt%.o : %.c
$(ECHO) Compiling realtime $<
@rm -f $@
@mkdir -p $(dir $@)
$(Q)$(CC) -c $(OPT) $(DEBUG) $(EXTRA_DEBUG) -DRTAPI -I../include \
$(EXTRA_CFLAGS) \
-MP -MD -MF "${@:.o=.d}" -MT "$@" \
$< -o $@
/dmitry
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