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[v2,10/15] samples: vfs: build sample programs for target architecture

Message ID 20200429034527.590520-11-masahiroy@kernel.org
State Not Applicable
Delegated to: David Miller
Headers show
Series kbuild: support 'userprogs' syntax | expand

Commit Message

Masahiro Yamada April 29, 2020, 3:45 a.m. UTC 
These userspace programs include 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 programs 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/vfs/Makefile | 11 +++--------
 2 files changed, 4 insertions(+), 9 deletions(-)
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Patch

diff --git a/samples/Kconfig b/samples/Kconfig
index 08f2d025ca05..831a7ecd3352 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -184,7 +184,7 @@  config SAMPLE_ANDROID_BINDERFS
 
 config SAMPLE_VFS
 	bool "Build example programs that use new VFS system calls"
-	depends on HEADERS_INSTALL
+	depends on CC_CAN_LINK && HEADERS_INSTALL
 	help
 	  Build example userspace programs that use new VFS system calls such
 	  as mount API and statx().  Note that this is restricted to the x86
diff --git a/samples/vfs/Makefile b/samples/vfs/Makefile
index 65acdde5c117..00b6824f9237 100644
--- a/samples/vfs/Makefile
+++ b/samples/vfs/Makefile
@@ -1,10 +1,5 @@ 
 # SPDX-License-Identifier: GPL-2.0-only
-# List of programs to build
-hostprogs := \
-	test-fsmount \
-	test-statx
+userprogs := test-fsmount test-statx
+always-y := $(userprogs)
 
-always-y := $(hostprogs)
-
-HOSTCFLAGS_test-fsmount.o += -I$(objtree)/usr/include
-HOSTCFLAGS_test-statx.o += -I$(objtree)/usr/include
+userccflags += -I usr/include