samples: guard sub-directories with CONFIG options
Do not descend to sub-directories when unneeded.
I used subdir-$(CONFIG_...) for hidraw, seccomp, and vfs because
they only contain host programs.
While we are here, let's add SPDX License tag, and sort the directories
alphabetically.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/samples/Makefile b/samples/Makefile
index 8e096e0..debf892 100644
--- a/samples/Makefile
+++ b/samples/Makefile
@@ -1,6 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
# Makefile for Linux samples code
-obj-y += kobject/ kprobes/ trace_events/ livepatch/ \
- hw_breakpoint/ kfifo/ kdb/ hidraw/ rpmsg/ seccomp/ \
- configfs/ connector/ v4l/ trace_printk/ \
- vfio-mdev/ vfs/ qmi/ binderfs/ pidfd/
+obj-$(CONFIG_SAMPLE_ANDROID_BINDERFS) += binderfs/
+obj-$(CONFIG_SAMPLE_CONFIGFS) += configfs/
+obj-$(CONFIG_SAMPLE_CONNECTOR) += connector/
+subdir-y += hidraw
+obj-$(CONFIG_SAMPLE_HW_BREAKPOINT) += hw_breakpoint/
+obj-$(CONFIG_SAMPLE_KDB) += kdb/
+obj-$(CONFIG_SAMPLE_KFIFO) += kfifo/
+obj-$(CONFIG_SAMPLE_KOBJECT) += kobject/
+obj-$(CONFIG_SAMPLE_KPROBES) += kprobes/
+obj-$(CONFIG_SAMPLE_LIVEPATCH) += livepatch/
+subdir-y += pidfd
+obj-$(CONFIG_SAMPLE_QMI_CLIENT) += qmi/
+obj-$(CONFIG_SAMPLE_RPMSG_CLIENT) += rpmsg/
+subdir-$(CONFIG_SAMPLE_SECCOMP) += seccomp
+obj-$(CONFIG_SAMPLE_TRACE_EVENTS) += trace_events/
+obj-$(CONFIG_SAMPLE_TRACE_PRINTK) += trace_printk/
+obj-$(CONFIG_VIDEO_PCI_SKELETON) += v4l/
+obj-y += vfio-mdev/
+subdir-$(CONFIG_SAMPLE_VFS) += vfs
diff --git a/samples/seccomp/Makefile b/samples/seccomp/Makefile
index 00e0b5e..009775b 100644
--- a/samples/seccomp/Makefile
+++ b/samples/seccomp/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
ifndef CROSS_COMPILE
-hostprogs-$(CONFIG_SAMPLE_SECCOMP) := bpf-fancy dropper bpf-direct user-trap
+hostprogs-y := bpf-fancy dropper bpf-direct user-trap
HOSTCFLAGS_bpf-fancy.o += -I$(objtree)/usr/include
HOSTCFLAGS_bpf-fancy.o += -idirafter $(objtree)/include
diff --git a/samples/vfs/Makefile b/samples/vfs/Makefile
index 4ac9690..a3e4ffd 100644
--- a/samples/vfs/Makefile
+++ b/samples/vfs/Makefile
@@ -1,5 +1,5 @@
# List of programs to build
-hostprogs-$(CONFIG_SAMPLE_VFS) := \
+hostprogs-y := \
test-fsmount \
test-statx
