kbuild: compile-test kernel headers to ensure they are self-contained (43c78d88) · Commits · 戴 / test

The headers in include/ are globally used in the kernel source tree to provide common APIs. They are included from external modules, too. It will be useful to make as many headers self-contained as possible so that we do not have to rely on a specific include order. There are more than 4000 headers in include/. In my rough analysis, 70% of them are already self-contained. With efforts, most of them can be self-contained. For now, we must exclude more than 1000 headers just because they cannot be compiled as standalone units. I added them to header-test-. The blacklist was mostly generated by a script, so the reason of the breakage should be checked later. Signed-off-by:

Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by:

Jani Nikula <jani.nikula@intel.com> Reviewed-by:

Joel Fernandes (Google) <joel@joelfernandes.org>

Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -618,6 +618,7 @@ ifeq ($(KBUILD_EXTMOD),)
		init-y := init/
		drivers-y := drivers/ sound/
		drivers-$(CONFIG_SAMPLES) += samples/
		drivers-$(CONFIG_KERNEL_HEADER_TEST) += include/
		net-y := net/
		libs-y := lib/
		core-y := usr/

include/Kbuild

0 → 100644

+1270 −0

File added.

Preview size limit exceeded, changes collapsed.

init/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -108,6 +108,17 @@ config HEADER_TEST
		If you are a developer or tester and want to ensure the requested
		headers are self-contained, say Y here. Otherwise, choose N.

		config KERNEL_HEADER_TEST
		bool "Compile test kernel headers"
		depends on HEADER_TEST
		help
		Headers in include/ are used to build external moduls.
		Compile test them to ensure they are self-contained, i.e.
		compilable as standalone units.

		If you are a developer or tester and want to ensure the headers
		in include/ are self-contained, say Y here. Otherwise, choose N.

		config UAPI_HEADER_TEST
		bool "Compile test UAPI headers"
		depends on HEADER_TEST && HEADERS_INSTALL && CC_CAN_LINK

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