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kbuild: make module name conflict fatal error

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I think all the warnings have been fixed by now. Make it a fatal error.

Check it before modpost because we need to stop building *.ko files.
Also, pass modules.order via a script parameter.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2020-05-11 13:21:49 +09:00
parent 121c2a1377
commit 8451791d1f
2 changed files with 18 additions and 5 deletions
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7
Makefile
View File

@ -1335,9 +1335,12 @@ all: modules
# using awk while concatenating to the final file. # using awk while concatenating to the final file.
PHONY += modules PHONY += modules
modules: $(if $(KBUILD_BUILTIN),vmlinux) modules.order modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh
PHONY += modules_check
modules_check: modules.order
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $<
modules.order: descend modules.order: descend
$(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@ $(Q)$(AWK) '!x[$$0]++' $(addsuffix /$@, $(build-dirs)) > $@

16
scripts/modules-check.sh
View File

@ -3,14 +3,24 @@
set -e set -e
if [ $# != 1 ]; then
echo "Usage: $0 <modules.order>" >& 2
exit 1
fi
exit_code=0
# Check uniqueness of module names # Check uniqueness of module names
check_same_name_modules() check_same_name_modules()
{ {
for m in $(sed 's:.*/::' modules.order | sort | uniq -d) for m in $(sed 's:.*/::' $1 | sort | uniq -d)
do do
echo "warning: same module names found:" >&2 echo "error: the following would cause module name conflict:" >&2
sed -n "/\/$m/s:^: :p" modules.order >&2 sed -n "/\/$m/s:^: :p" modules.order >&2
exit_code=1
done done
} }
check_same_name_modules check_same_name_modules "$1"
exit $exit_code