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|
# ===========================================================================
# Module versions
# ===========================================================================
.PHONY: __modversions
__modversions:
include .config
include scripts/Makefile.lib
#
__modules := $(shell cat /dev/null $(wildcard $(MODVERDIR)/*.mod))
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
ifneq ($(filter-out $(modules),$(__modules)),)
$(warning *** Uh-oh, you have stale module entries. You messed with SUBDIRS,)
$(warning do not complain if something goes wrong.)
endif
__modversions: $(modules)
@:
# The final module link
quiet_cmd_ld_ko_o = LD [M] $@
cmd_ld_ko_o = $(LD) $(LDFLAGS) $(LDFLAGS_MODULE) -o $@ \
$(filter-out FORCE,$^)
$(modules): %.ko :%.o %.mod.o FORCE
$(call if_changed,ld_ko_o)
targets += $(modules)
# Compile version info for unresolved symbols
quiet_cmd_cc_o_c = CC $@
cmd_cc_o_c = $(CC) $(CFLAGS) $(CFLAGS_MODULE) -c -o $@ $<
# We have a fake dependency on compile.h to make sure that we
# notice if the compiler version changes under us.
$(modules:.ko=.mod.o): %.mod.o: %.mod.c include/linux/compile.h FORCE
$(call if_changed,cc_o_c)
targets += $(modules:.ko=.mod.o)
# All the .mod.c files are generated using the helper "modpost"
.PHONY: __modpost
$(modules:.ko=.mod.c): __modpost ;
# Extract all checksums for all exported symbols
quiet_cmd_modpost = MODPOST
cmd_modpost = scripts/modpost $^
__modpost: $(wildcard vmlinux) $(modules:.ko=.o)
$(call if_changed,modpost)
targets += __modpost
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
.PHONY: FORCE
FORCE:
# Read all saved command lines and dependencies for the $(targets) we
# may be building above, using $(if_changed{,_dep}). As an
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
targets := $(wildcard $(sort $(targets)))
cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
endif
|
