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Building CONFIG_SAMPLES separately.

PATCH Jim Baxter 1 participant 1 message Jul 10, 2013 Kbuild

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Jim Baxter

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Hi,

I was wondering if there is a reason the modules under the samples directory only build if you use the command make uImage modules?

I have created a patch so that they compile if you enable CONFIG_SAMPLES and then build the kernel separately, i.e.
make uImage
make modules

This two step approach is how the kernel is built if you use bitbake in yocto, currently it does not output the kernel module object file for the sample modules.

This is the patch I am considering:

Makefile +3 -3
index 29339b4..1acd69f 100644
@@ -772,9 +772,6 @@ vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE
 ifdef CONFIG_HEADERS_CHECK
        $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
 endif
-ifdef CONFIG_SAMPLES
-       $(Q)$(MAKE) $(build)=samples
-endif
 ifdef CONFIG_BUILD_DOCSRC
        $(Q)$(MAKE) $(build)=Documentation
 endif
@@ -943,6 +940,9 @@ all: modules
 
 PHONY += modules
 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
+ifdef CONFIG_SAMPLES
+       $(Q)$(MAKE) $(build)=samples
+endif
        $(Q)$(AWK) '!x[$$0]++'

$(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order

        @$(kecho) '  Building modules, stage 2.';
        $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost

Thank you for any help or advice,
Jim Baxter