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kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod

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Towards the goal of removing MODVERDIR, read out modules.order to get
the list of modules to be processed. This is simpler than parsing *.mod
files in $(MODVERDIR).

For external modules, $(KBUILD_EXTMOD)/modules.order should be read.

I removed the single target %.ko from the top Makefile. To make sure
modpost works correctly, vmlinux and the other modules must be built.
You cannot build a particular .ko file alone.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-07-17 15:17:55 +09:00
parent c35c87d6f2
commit ff9b45c55b
2 changed files with 9 additions and 8 deletions
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2
Makefile
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@ -1772,8 +1772,6 @@ build-dir = $(patsubst %/,%,$(dir $(build-target)))
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.symtypes: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.ko: %.o
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# Modules
PHONY += /

15
scripts/Makefile.modpost
View File

@ -8,9 +8,10 @@
# b) A <module>.o file which is the .o files above linked together
# c) A <module>.mod file in $(MODVERDIR)/, listing the name of the
# the preliminary <module>.o file, plus all .o files
# d) modules.order, which lists all the modules
# Stage 2 is handled by this file and does the following
# 1) Find all modules from the files listed in $(MODVERDIR)/
# 1) Find all modules listed in modules.order
# 2) modpost is then used to
# 3) create one <module>.mod.c file pr. module
# 4) create one Module.symvers file with CRC for all exported symbols
@ -60,10 +61,12 @@ include scripts/Makefile.lib
kernelsymfile := $(objtree)/Module.symvers
modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
# Step 1), find all modules listed in $(MODVERDIR)/
MODLISTCMD := find $(MODVERDIR) -name '*.mod' | xargs -r grep -h '\.ko$$' | sort -u
__modules := $(shell $(MODLISTCMD))
modules := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o)))
modorder := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
# Step 1), find all modules listed in modules.order
ifdef CONFIG_MODULES
modules := $(sort $(shell cat $(modorder)))
endif
# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
_modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
@ -84,7 +87,7 @@ MODPOST_OPT=$(subst -i,-n,$(filter -i,$(MAKEFLAGS)))
# We can go over command line length here, so be careful.
quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules
cmd_modpost = $(MODLISTCMD) | sed 's/\.ko$$/.o/' | $(modpost) $(MODPOST_OPT) -s -T -
cmd_modpost = sed 's/ko$$/o/' $(modorder) | $(modpost) $(MODPOST_OPT) -s -T -
PHONY += __modpost
__modpost: $(modules:.ko=.o) FORCE