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 <masahi...@kernel.org>
Acked-by: Sam Ravnborg <s...@ravnborg.org>
---
Changes in v2: None
samples/Kconfig | 2 +-
samples/pidfd/Makefile | 8 ++++----
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/samples/Kconfig b/samples/Kconfig
index 831a7ecd3352..c68d391c0602 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -122,7 +122,7 @@ config SAMPLE_HIDRAW
config SAMPLE_PIDFD
bool "pidfd sample"
- depends on HEADERS_INSTALL
+ depends on CC_CAN_LINK && HEADERS_INSTALL
config SAMPLE_SECCOMP
bool "Build seccomp sample code"
diff --git a/samples/pidfd/Makefile b/samples/pidfd/Makefile
index ee2979849d92..6e5b67e648c2 100644
--- a/samples/pidfd/Makefile
+++ b/samples/pidfd/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
-hostprogs := pidfd-metadata
-always-y := $(hostprogs)
-HOSTCFLAGS_pidfd-metadata.o += -I$(objtree)/usr/include
-all: pidfd-metadata
+usertprogs := pidfd-metadata
+always-y := $(userprogs)
+
+userccflags += -I usr/include
--
2.25.1
