From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: bpf <bpf@vger.kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Sam Ravnborg <sam@ravnborg.org>,
linux-kernel@vger.kernel.org,
Masahiro Yamada <masahiroy@kernel.org>
Subject: [PATCH v2 11/15] samples: pidfd: build sample program for target architecture
Date: Wed, 29 Apr 2020 12:45:23 +0900 [thread overview]
Message-ID: <20200429034527.590520-12-masahiroy@kernel.org> (raw)
In-Reply-To: <20200429034527.590520-1-masahiroy@kernel.org>
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>
---
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
next prev parent reply other threads:[~2020-04-29 3:46 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-29 3:45 [PATCH v2 00/15] kbuild: support 'userprogs' syntax Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 01/15] bpfilter: match bit size of bpfilter_umh to that of the kernel Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 02/15] kbuild: add infrastructure to build userspace programs Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 03/15] bpfilter: use 'userprogs' syntax to build bpfilter_umh Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 04/15] samples: seccomp: build sample programs for target architecture Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 05/15] kbuild: doc: document the new syntax 'userprogs' Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 06/15] samples: uhid: fix warnings in uhid-example Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 07/15] samples: uhid: build sample program for target architecture Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 08/15] samples: hidraw: " Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 09/15] samples: connector: " Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 10/15] samples: vfs: build sample programs " Masahiro Yamada
2020-04-29 3:45 ` Masahiro Yamada [this message]
2020-04-29 3:45 ` [PATCH v2 12/15] samples: mei: build sample program " Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 13/15] samples: auxdisplay: use 'userprogs' syntax Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 14/15] samples: timers: " Masahiro Yamada
2020-04-29 3:45 ` [PATCH v2 15/15] samples: watchdog: " Masahiro Yamada
2020-05-12 4:34 ` [PATCH v2 00/15] kbuild: support " Masahiro Yamada
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