samples: watch_queue: build sample program for target architecture (214377e9) · Commits · 戴 / test

This userspace program includes UAPI headers exported to usr/include/. 'make headers' always works for the target architecture (i.e. the same architecture as the kernel), so the sample program should be built for the target as well. Kbuild now supports 'userprogs' for that. I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because $(CC) may not provide libc. Signed-off-by:

Masahiro Yamada <masahiroy@kernel.org>

samples/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -211,7 +211,7 @@ config SAMPLE_WATCHDOG

		config SAMPLE_WATCH_QUEUE
		bool "Build example /dev/watch_queue notification consumer"
		depends on HEADERS_INSTALL
		depends on CC_CAN_LINK && HEADERS_INSTALL
		help
		Build example userspace program to use the new mount_notify(),
		sb_notify() syscalls and the KEYCTL_WATCH_KEY keyctl() function.

samples/watch_queue/Makefile

+4 −6

Original line number	Diff line number	Diff line
		# List of programs to build
		hostprogs := watch_test
		# SPDX-License-Identifier: GPL-2.0-only
		userprogs := watch_test
		always-y := $(userprogs)

		# Tell kbuild to always build the programs
		always-y := $(hostprogs)

		HOSTCFLAGS_watch_test.o += -I$(objtree)/usr/include
		userccflags += -I usr/include

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