modify IMA compiling rule and add linking rule

Makerules

@@ -82,7 +82,7 @@ disp_ld        = $($(DISP)_disp_ld)
 cmd_compile.c = $(CC) -c $< -o $@ $(CFLAGS) $(ARCH_CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(notdir $(^D))) $(CFLAGS-$(subst $(top_srcdir),,$(dir $<))) $(CFLAGS-$(notdir $<)) $(CFLAGS-$(notdir $@))
 cmd_compile.S = $(cmd_compile.c) $(ASFLAGS) $(ARCH_ASFLAGS) $(ASFLAGS-$(suffix $@)) $(ASFLAGS-$(notdir $<)) $(ASFLAGS-$(notdir $@))
 cmd_compile.m = $(cmd_compile.c) -DL_$(patsubst %$(suffix $(notdir $@)),%,$(notdir $@))
-cmd_compile-m = $(CC) $^ -c -o $@ $(CFLAGS) $(ARCH_CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(notdir $@)) $(CFLAGS-multi-y)
+cmd_compile-m = $(CC) $^ -c -o $@ $(CFLAGS) $(ARCH_CFLAGS) $(CFLAGS-$(suffix $@)) $(CFLAGS-$(notdir $(@D))) $(CFLAGS-$(notdir $@)) $(CFLAGS-multi-y)
 cmd_strip     = $(STRIPTOOL) $(STRIP_FLAGS) $^
 cmd_ar        = $(AR) $(ARFLAGS) $@ $^
 
@@ -116,6 +116,17 @@ define link.so
 	$(Q)$(LN) -sf $(1) $@
 endef
 
+define linkm.so
+	$(Q)$(INSTALL) -d $(dir $@)
+	$(Q)$(RM) $@ $@.$(2) $(dir $@)$(1)
+	@$(disp_ld)
+	$(Q)$(LD) $(LDFLAGS-$(notdir $@)) -soname=$(notdir $@).$(2) \
+		-o $(dir $@)$(1) $(START_FILE-$(notdir $@)) $(firstword $^) \
+		$(LIBS-$(notdir $@)) $(LIBGCC) $(END_FILE-$(notdir $@))
+	$(Q)$(LN) -sf $(1) $@.$(2)
+	$(Q)$(LN) -sf $(1) $@
+endef
+
 CFLAGS-.os+=$(PICFLAG)
 CFLAGS-.oS+=$(PICFLAG) -DSHARED