package/weston: introduce _SIMPLE_CLIENTS package option

commit "package/weston: fix the configuration of simple-clients"
fixed the configuration of Weston simple-clients by always enabling all
supported applications.

Since it is not desirable to always have all those applications
installed on target, this commit introduces a new package Kconfig
option to control this.

Since there is already a BR2_PACKAGE_WESTON_DEMO_CLIENTS option present,
this commit also update the Kconfig "help" entries, to clarify the
difference between those "demo clients" and "simple clients". Those
clients groups are directly coming from the upstream package (and are
directly mapped to Meson configure options).

Signed-off-by: Julien Olivain <ju.o@free.fr>
[yann.morin.1998@free.fr:
  - set -Dsimple-clients= only once, outside conditional block
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/weston/Config.in

@@ -174,6 +174,18 @@ config BR2_PACKAGE_WESTON_SCREENSHARE
 	bool "screenshare"
 	default y
 
+config BR2_PACKAGE_WESTON_SIMPLE_CLIENTS
+	bool "simple clients"
+	help
+	  Simple clients includes application such as:
+	  damage, dmabuf-feedback, dmabuf-egl, dmabuf-v4l, egl
+
+	  In the target filesystem, simple client program binaries are
+	  prefixed with "weston-simple-".
+
+	  Note: Weston has two sets of clients. See also the weston
+	  "demo clients" option.
+
 config BR2_PACKAGE_WESTON_DEMO_CLIENTS
 	bool "demo clients"
 	depends on BR2_USE_MMU # pango
@@ -188,6 +200,18 @@ config BR2_PACKAGE_WESTON_DEMO_CLIENTS
 	help
 	  This enables the installation of Weston's demo clients.
 
+	  Demo clients includes application such as:
+	  clickdot, confine, content_protection, dnd, editor,
+	  eventdemo, flower, fullscreen, image, multi-resource,
+	  presentation-shm, resizor, scaler, smoke, stacking,
+	  subsurfaces, tablet, transformed...
+
+	  In the target filesystem, demo client program binaries are
+	  prefixed with "weston-".
+
+	  Note: Weston has two sets of clients. See also the weston
+	  "simple clients" option.
+
 comment "demo clients needs an OpenGL ES provider, an OpenEGL-capable Wayland backend and a toolchain w/ wchar, threads, C++, gcc >= 4.9"
 	depends on BR2_USE_MMU
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4

package/weston/weston.mk

@@ -22,6 +22,7 @@ WESTON_CONF_OPTS = \
 	-Dlauncher-libseat=true \
 	-Dtools=calibrator,debug,info,terminal,touch-calibrator
 
+ifeq ($(BR2_PACKAGE_WESTON_SIMPLE_CLIENTS),y)
 WESTON_SIMPLE_CLIENTS = \
 	damage \
 	dmabuf-egl \
@@ -35,6 +36,7 @@ ifeq ($(BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8),y)
 # dmabuf-v4l uses VIDIOC_EXPBUF, only available from 3.8+
 WESTON_SIMPLE_CLIENTS += dmabuf-v4l
 endif
+endif # BR2_PACKAGE_WESTON_SIMPLE_CLIENTS
 
 WESTON_CONF_OPTS += -Dsimple-clients=$(subst $(space),$(comma),$(strip $(WESTON_SIMPLE_CLIENTS)))