kbuild: remove 'make /' support
'make /' is just an alias for 'make ./'; this builds all objects of an
external module, but skips the modpost stage.
I am not a big fan of 'make /' since it looks as if it were touching
the root directory of the system. I like 'make ./' better.
I do not know how many people are using it, but let's show a hint if
it is used. Also, move it close to the external module rules since
this only makes sense for external modules.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/Makefile b/Makefile
index a083dd9..f78c50018 100644
--- a/Makefile
+++ b/Makefile
@@ -1648,6 +1648,10 @@
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
+PHONY += /
+/:
+ @echo >&2 '"$(MAKE) /" is no longer supported. Please use "$(MAKE) ./" instead.'
+
PHONY += help
help:
@echo ' Building external modules.'
@@ -1783,11 +1787,6 @@
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod)
$(Q)echo $(build-target) > $(MODORDER)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
-
-# Modules
-PHONY += /
-/: ./
-
%/: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=1 $(build)=$(build-dir) need-modorder=1