samples: hidraw: build sample program for target architecture

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>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

diff --git a/samples/Kconfig b/samples/Kconfig
index 2560e87..08f2d02 100644 (file)
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -118,7 +118,7 @@ config SAMPLE_CONNECTOR
 
 config SAMPLE_HIDRAW
        bool "hidraw sample"
-       depends on HEADERS_INSTALL
+       depends on CC_CAN_LINK && HEADERS_INSTALL
 
 config SAMPLE_PIDFD
        bool "pidfd sample"

diff --git a/samples/hidraw/Makefile b/samples/hidraw/Makefile
index 8bd25f7..d2c77ed 100644 (file)
--- a/samples/hidraw/Makefile
+++ b/samples/hidraw/Makefile
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-# List of programs to build
-hostprogs := hid-example
-always-y := $(hostprogs)
+userprogs := hid-example
+always-y := $(userprogs)
 
-HOSTCFLAGS_hid-example.o += -I$(objtree)/usr/include
-
-all: hid-example
+userccflags += -I usr/include