[PATCH] kbuild: warn if always, hostprogs-y, or hostprogs-m is used

[Masahiro Yamada]

always, hostprogs-y, and hostprogs-m are deprecated.

There is no user in upstream code, but I am keeping them for external
modules. I want to remove them entirely someday. Notify the deprecation
to downstream users.

Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---

 scripts/Makefile.lib | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index cd52a8c6428f..f869a4b2646c 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -4,8 +4,14 @@ asflags-y  += $(EXTRA_AFLAGS)
 ccflags-y  += $(EXTRA_CFLAGS)
 cppflags-y += $(EXTRA_CPPFLAGS)
 ldflags-y  += $(EXTRA_LDFLAGS)
+ifneq ($(always),)
+$(warning 'always' is deprecated. Please use 'always-y' instead)
 always-y   += $(always)
+endif
+ifneq ($(hostprogs-y)$(hostprogs-m),)
+$(warning 'hostprogs-y' and 'hostprogs-m' are deprecated. Please use 'hostprogs' instead)
 hostprogs  += $(hostprogs-y) $(hostprogs-m)
+endif
 
 # flags that take effect in current and sub directories
 KBUILD_AFLAGS += $(subdir-asflags-y)
-- 
2.25.1