Messages in this thread Patch in this message | | | Date | Tue, 18 Jan 2005 19:41:23 +0100 | From | Andreas Gruenbacher <> | Subject | [kbuild 1/5] Warn when building external modules without modversions |
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This adds a warning when building external modules (M= or SUBDIRS= syntax) and there is no Module.symvers in the object tree. A missing Module.symvers is a clear sign that the kernel tree itself was never compiled. The resulting modules will work, but no symbol version information will be attached to kernel symbols the module uses (because that information comes from Module.symvers), and so the module will be more unsafe.
The test works with CONFIG_MODVERSIONS enabled or disabled.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Index: linux-2.6.11-rc1-bk6/Makefile =================================================================== --- linux-2.6.11-rc1-bk6.orig/Makefile +++ linux-2.6.11-rc1-bk6/Makefile @@ -1093,9 +1093,17 @@ KBUILD_MODULES := 1 crmodverdir: $(Q)mkdir -p $(MODVERDIR) +.PHONY: $(objtree)/Module.symvers +$(objtree)/Module.symvers: + @test -e $(objtree)/Module.symvers || ( \ + echo; \ + echo "WARNING: Symbol version dump $(objtree)/Module.symvers is " \ + "missing; modules will have no modversions."; \ + echo ) + module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) .PHONY: $(module-dirs) modules -$(module-dirs): crmodverdir +$(module-dirs): crmodverdir $(objtree)/Module.symvers $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) modules: $(module-dirs) -- Andreas Gruenbacher <agruen@suse.de> SUSE Labs, SUSE LINUX PRODUCTS GMBH
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