8143721c3e
This patch adds the ability to compile and install the kernel selftests into the target at /usr/lib/kselftests. The rationale behind /usr/lib is that the selftests have subdirectories where they are installed which makes them unsuitable to be placed in /usr/sbin as this would result in /usr/sbin/kselftests/x/y/z. While the selftests aren't libraries either, they don't achieve much as a standalone binary so they can be considered to be a 'library of tests' making /usr/lib sensible. The selftests require that the kernel headers be installed into the kernel build tree as some of the selftests have a hardcoded CFLAGS to include kernel headers (CFLAGS += -I../../../../usr/include/). This is most easily achieved by using the make ... headers_install inside the kernel build dir. This is likely to be a rarely used debugging/performance feature for development and unlikely to be used in a production configuration. Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr> [Thomas: - remove bash as a build dependency, it is only a runtime dependency. - fix typo in the Config.in help text, and rewrap - add missing 'depends on BR2_USE_MMU' dependency for the comment.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
47 lines
1.4 KiB
Makefile
47 lines
1.4 KiB
Makefile
################################################################################
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#
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# selftests
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#
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################################################################################
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LINUX_TOOLS += selftests
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ifeq ($(KERNEL_ARCH),x86_64)
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SELFTESTS_ARCH=x86
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else
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ifeq ($(KERNEL_ARCH),i386)
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SELFTESTS_ARCH=x86
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else
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SELFTESTS_ARCH=$(KERNEL_ARCH)
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endif
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endif
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SELFTESTS_DEPENDENCIES = libcap-ng popt
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SELFTESTS_MAKE_FLAGS = \
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$(LINUX_MAKE_FLAGS) \
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ARCH=$(SELFTESTS_ARCH)
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# O must be redefined here to overwrite the one used by Buildroot for
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# out of tree build. We build the selftests in $(@D)/tools/selftests and
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# not just $(@D) so that it isn't built in the root directory of the kernel
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# sources.
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#
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# The headers_install step here is important as some kernel selftests use a
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# hardcoded CFLAGS to find kernel headers e.g:
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# CFLAGS += -I../../../../usr/include/
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# The headers_install target will install the kernel headers locally inside
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# the Linux build dir
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define SELFTESTS_BUILD_CMDS
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$(TARGET_MAKE_ENV) $(MAKE1) -C $(@D) $(SELFTESTS_MAKE_FLAGS) \
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headers_install
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$(TARGET_MAKE_ENV) $(MAKE1) -C $(@D)/tools/testing/selftests \
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$(SELFTESTS_MAKE_FLAGS) O=$(@D)/tools/testing/selftests
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endef
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define SELFTESTS_INSTALL_TARGET_CMDS
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$(TARGET_MAKE_ENV) $(MAKE1) -C $(@D)/tools/testing/selftests \
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$(SELFTESTS_MAKE_FLAGS) O=$(@D)/tools/testing/selftests \
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INSTALL_PATH=$(TARGET_DIR)/usr/lib/kselftests install
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endef
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