#rules-apps.unix

.NeverBuilt : appsclean

# applibsall builds both applib types (downloadable .o and linkable .a) as well
# as any subdirectories.
applibsall : applib objapplib applibsubdirs

# Linkable .a
applib : $(TGT_DIR)/lib/$(APPLIBNAME)

# Downloadable .o.
objapplib : $(TGT_DIR)/lib/$(APPLIBDIRNAME)/$(OBJAPPLIBNAME)

# Since we need to force the rules to execute so that applibs will be 
# generated from existing objects, we need to prevent them from executing
# if there are no objects, since the linker will fail.
ifneq ($(LIBOBJS),)

# By specifying FORCE as a dependency, we force the rules to be executed
# even if no object modules needed to be recompiled.  This allows the
# applibs to be regenerated using existing objects instead of having to
# recompile all of them if we touched one.

$(TGT_DIR)/lib/$(APPLIBNAME): $(LIBOBJS) FORCE
	$(AR) r $@ $(LIBOBJS)
	
# If the applib already exists, copy it to a temporary file, link the new 
# objects to a different temporary file, then link to the target applib.
$(TGT_DIR)/lib/$(APPLIBDIRNAME)/$(OBJAPPLIBNAME): $(LIBOBJS) FORCE
	@ - if [ -d $(@D) ] ; then \
		echo ; \
	else \
		mkdir $(@D) ; \
	fi
	@-$(RM) $(@D)/temp1.o $(@D)/temp2.o
	@ - if [ -w $@ ] ; then \
		$(CP) $@ $(@D)/temp2.o; \
	fi
	@-$(RM) $@
	$(LD) $(LD_PARTIAL_FLAGS) -nostdlib -r -o $(@D)/temp1.o $(LIBOBJS) 
	@ - if [ -w $(@D)/temp2.o ] ; then \
		($(LD) $(LD_PARTIAL_FLAGS) -nostdlib -r -o $@ $(@D)/temp1.o $(@D)/temp2.o); \
	else \
		($(LD) $(LD_PARTIAL_FLAGS) -nostdlib -r -o $@ $(@D)/temp1.o); \
	fi
	@-$(RM) $(@D)/temp1.o $(@D)/temp2.o
	
FORCE:

else

$(TGT_DIR)/lib/$(APPLIBNAME): $(LIBOBJS)

$(TGT_DIR)/lib/$(APPLIBDIRNAME)/$(OBJAPPLIBNAME):

endif
	
# if APPLIBSUBDIRS is not null we need to build the subdirectories before building
# the current directory.

# if we have APPLIBSUBDIRS
ifneq ($(APPLIBSUBDIRS),)

# Because APPLIBSUBDIRS and SUBDIRS (used for creating the vxWorks archive) will
# often contain the same directories, and therefore will often generate the
# same targets below, we have to play some games to generate unique target names.
# We do this by placing a | on each end of the directory name for the rule 
# generation but then strip it off when spawning the recursive make.
FAKE_APPLIBSUBDIRS := $(foreach dir,$(APPLIBSUBDIRS),|$(dir)|)

applibsubdirs : $(FAKE_APPLIBSUBDIRS)

$(FAKE_APPLIBSUBDIRS)::
	cd $(subst |,,$@) && $(MAKE) CPU=$(CPU) TOOL=$(TOOL) applibsall

else

applibsubdirs :

endif

applibsclean :
	-$(RM) $(TGT_DIR)/lib/$(APPLIBNAME)
	-$(RM) $(TGT_DIR)/lib/$(APPLIBDIRNAME)/$(OBJAPPLIBNAME)