Commit ea837f1c authored by Sam Ravnborg's avatar Sam Ravnborg
Browse files

kbuild: make modpost processing configurable 



On request from Al Viro make modpost processing configurable.

KBUILD_MODPOST_WARN can be set to make modpost warn instead of
error out in case on unresolved symbols in final module link.

KBUILD_MODPOST_NOFINAL can be set to avoid the final and timeconsuming
.c file generation and link of .ko files. This is solely useful for
speeding up when doing compile checks with for example allmodconfig

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent e94c5bde

scripts/Makefile.modpost

+8 −3
Original line number Diff line number Diff line
@@ -32,6 +32,10 @@ 
# Step 4 is solely used to allow module versioning in external modules,

# where the CRC of each module is retrieved from the Module.symers file.



# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined

# symbols in the final module linking stage

# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.

# This is solely usefull to speed up test compiles

PHONY := _modpost

_modpost: __modpost
@@ -46,7 +50,8 @@ modulesymfile := $(KBUILD_EXTMOD)/Module.symvers 
__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))

modules   := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o)))



_modpost: $(modules)

# Stop after building .o files if NOFINAL is set. Makes compile tests quicker

_modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))





# Step 2), invoke modpost
@@ -58,7 +63,7 @@ quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules 
	$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \

	$(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \

	$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \

	$(if $(KBUILD_EXTMOD),-w) \

	$(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w) \

	$(wildcard vmlinux) $(filter-out FORCE,$^)



PHONY += __modpost

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