PHONY := __build
__build:
+# Init all relevant variables used in kbuild files so
+# 1) they have correct type
+# 2) they do not inherit any value from the environment
+obj-y :=
+obj-m :=
+lib-y :=
+lib-m :=
+always :=
+targets :=
+subdir-y :=
+subdir-m :=
+EXTRA_AFLAGS :=
+EXTRA_CFLAGS :=
+EXTRA_CPPFLAGS :=
+EXTRA_LDFLAGS :=
+asflags-y :=
+ccflags-y :=
+cppflags-y :=
+ldflags-y :=
+
# Read .config if it exist, otherwise ignore
-include include/config/auto.conf
include scripts/Kbuild.include
+# For backward compatibility check that these variables does not change
+save-cflags := $(CFLAGS)
+
# The filename Kbuild has precedence over Makefile
kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
-include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
-
+kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
+include $(kbuild-file)
+
+# If the save-* variables changed error out
+ifeq ($(KBUILD_NOPEDANTIC),)
+ ifneq ("$(save-cflags)","$(CFLAGS)")
+ $(error CFLAGS was changed in "$(kbuild-file)". Fix it to use EXTRA_CFLAGS)
+ endif
+endif
include scripts/Makefile.lib
ifdef host-progs
_dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d)))
endif
-
-ifdef EXTRA_TARGETS
-$(warning kbuild: $(obj)/Makefile - Usage of EXTRA_TARGETS is obsolete in 2.6. Please fix!)
-endif
-
-ifdef build-targets
-$(warning kbuild: $(obj)/Makefile - Usage of build-targets is obsolete in 2.6. Please fix!)
-endif
-
-ifdef export-objs
-$(warning kbuild: $(obj)/Makefile - Usage of export-objs is obsolete in 2.6. Please fix!)
-endif
-
-ifdef O_TARGET
-$(warning kbuild: $(obj)/Makefile - Usage of O_TARGET := $(O_TARGET) is obsolete in 2.6. Please fix!)
-endif
-
-ifdef L_TARGET
-$(error kbuild: $(obj)/Makefile - Use of L_TARGET is replaced by lib-y in 2.6. Please fix!)
-endif
-
-ifdef list-multi
-$(warning kbuild: $(obj)/Makefile - list-multi := $(list-multi) is obsolete in 2.6. Please fix!)
-endif
-
ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif
#
ifdef lib-target
quiet_cmd_link_l_target = AR $@
-cmd_link_l_target = rm -f $@; $(AR) $(EXTRA_ARFLAGS) rcs $@ $(lib-y)
+cmd_link_l_target = rm -f $@; $(AR) rcs $@ $(lib-y)
$(lib-target): $(lib-y) FORCE
$(call if_changed,link_l_target)
cmd_link_multi-y = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps)
quiet_cmd_link_multi-m = LD [M] $@
-cmd_link_multi-m = $(LD) $(ld_flags) $(LDFLAGS_MODULE) -o $@ $(link_multi_deps)
+cmd_link_multi-m = $(cmd_link_multi-y)
# We would rather have a list of rules like
# foo.o: $(foo-objs)