Merge pull request #220 from versusvoid/optional-xwayland

Make Xwayland optional

include/rootston/config.h

@@ -27,6 +27,7 @@ struct binding_config {
 };
 
 struct roots_config {
+	bool xwayland;
 	// TODO: Multiple cursors, multiseat
 	struct {
 		char *mapped_output;

include/rootston/desktop.h

@@ -35,15 +35,18 @@ struct roots_desktop {
 	struct wlr_compositor *compositor;
 	struct wlr_wl_shell *wl_shell;
 	struct wlr_xdg_shell_v6 *xdg_shell_v6;
-	struct wlr_xwayland *xwayland;
 	struct wlr_gamma_control_manager *gamma_control_manager;
 	struct wlr_screenshooter *screenshooter;
 
 	struct wl_listener output_add;
 	struct wl_listener output_remove;
 	struct wl_listener xdg_shell_v6_surface;
-	struct wl_listener xwayland_surface;
 	struct wl_listener wl_shell_surface;
+
+#ifdef HAS_XWAYLAND
+	struct wlr_xwayland *xwayland;
+	struct wl_listener xwayland_surface;
+#endif
 };
 
 struct roots_server;

include/rootston/server.h

@@ -5,7 +5,9 @@
 #include <wlr/backend/session.h>
 #include <wlr/types/wlr_data_device_manager.h>
 #include <wlr/render.h>
+#ifdef HAS_XWAYLAND
 #include <wlr/xwayland.h>
+#endif
 #include "rootston/config.h"
 #include "rootston/desktop.h"
 #include "rootston/input.h"

include/rootston/view.h

@@ -58,12 +58,16 @@ struct roots_view {
 	union {
 		struct wlr_wl_shell_surface *wl_shell_surface;
 		struct wlr_xdg_surface_v6 *xdg_surface_v6;
+#ifdef HAS_XWAYLAND
 		struct wlr_xwayland_surface *xwayland_surface;
+#endif
 	};
 	union {
 		struct roots_wl_shell_surface *roots_wl_shell_surface;
 		struct roots_xdg_surface_v6 *roots_xdg_surface_v6;
+#ifdef HAS_XWAYLAND
 		struct roots_xwayland_surface *roots_xwayland_surface;
+#endif
 	};
 	struct wlr_surface *wlr_surface;
 	// TODO: This would probably be better as a field that's updated on a

meson.build

@@ -24,7 +24,6 @@ add_project_link_arguments(
 )
 
 wlr_inc = include_directories('include')
-install_subdir('include/wlr', install_dir: 'include')
 
 cc = meson.get_compiler('c')
 
@@ -72,13 +71,36 @@ if elogind.found() and get_option('enable_elogind')
 	add_project_arguments('-DHAS_ELOGIND', language: 'c')
 endif
 
+exclude_files = []
+wlr_parts = []
+conf_data = configuration_data()
+if get_option('enable_xwayland')
+	add_project_arguments('-DHAS_XWAYLAND', language: 'c')
+	subdir('xwayland')
+	wlr_parts += [lib_wlr_xwayland]
+	conf_data.set('WLR_HAS_XWAYLAND', true)
+else
+	exclude_files += ['xwayland.h']
+endif
+configure_file(output: 'config.h', install_dir: 'include/wlr', configuration: conf_data)
+install_subdir('include/wlr', install_dir: 'include', exclude_files: exclude_files)
+
+
 subdir('protocol')
 subdir('render')
 subdir('backend')
 subdir('types')
 subdir('util')
 subdir('xcursor')
-subdir('xwayland')
+
+wlr_parts += [
+	lib_wl_protos,
+	lib_wlr_backend,
+	lib_wlr_render,
+	lib_wlr_types,
+	lib_wlr_util,
+	lib_wlr_xcursor,
+]
 
 wlr_deps = [
 	wayland_server,
@@ -104,15 +126,7 @@ wlr_deps = [
 lib_wlr = library(
 	'wlroots',
 	files('dummy.c'),
-	link_whole: [
-		lib_wl_protos,
-		lib_wlr_backend,
-		lib_wlr_render,
-		lib_wlr_types,
-		lib_wlr_util,
-		lib_wlr_xcursor,
-		lib_wlr_xwayland,
-	],
+	link_whole: wlr_parts,
 	dependencies: wlr_deps,
 	include_directories: wlr_inc,
 	install: true,

meson_options.txt

@@ -1,3 +1,4 @@
 option('enable_libcap', type: 'boolean', value: true, description: 'Enable support for capabilities')
 option('enable_systemd', type: 'boolean', value: true, description: 'Enable support for logind')
 option('enable_elogind', type: 'boolean', value: true, description: 'Enable support for logind')
+option('enable_xwayland', type: 'boolean', value: true, description: 'Enable support X11 applications')

rootston/config.c

@@ -5,6 +5,7 @@
 #include <limits.h>
 #include <getopt.h>
 #include <string.h>
+#include <strings.h>
 #include <unistd.h>
 #include <sys/param.h>
 #include <wlr/util/log.h>
@@ -114,7 +115,19 @@ static const char *device_prefix = "device:";
 static int config_ini_handler(void *user, const char *section, const char *name,
 		const char *value) {
 	struct roots_config *config = user;
-	if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) {
+	if (strcmp(section, "core") == 0) {
+		   if (strcmp(name, "xwayland") == 0) {
+			   if (strcasecmp(value, "true") == 0) {
+					config->xwayland = true;
+			   } else if (strcasecmp(value, "false") == 0) {
+					config->xwayland = false;
+			   } else {
+					wlr_log(L_ERROR, "got unknown xwayland value: %s", value);
+			   }
+		   } else {
+			   wlr_log(L_ERROR, "got unknown core config: %s", name);
+		   }
+	} else if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) {
 		const char *output_name = section + strlen(output_prefix);
 		struct output_config *oc;
 		bool found = false;
@@ -251,6 +264,7 @@ static int config_ini_handler(void *user, const char *section, const char *name,
 
 struct roots_config *parse_args(int argc, char *argv[]) {
 	struct roots_config *config = calloc(1, sizeof(struct roots_config));
+	config->xwayland = true;
 	wl_list_init(&config->outputs);
 	wl_list_init(&config->devices);
 	wl_list_init(&config->bindings);

rootston/desktop.c

@@ -262,11 +262,15 @@ struct roots_desktop *desktop_create(struct roots_server *server,
 		&desktop->wl_shell_surface);
 	desktop->wl_shell_surface.notify = handle_wl_shell_surface;
 
+#ifdef HAS_XWAYLAND
+	if (config->xwayland) {
 		desktop->xwayland = wlr_xwayland_create(server->wl_display,
 			desktop->compositor);
 		wl_signal_add(&desktop->xwayland->events.new_surface,
 			&desktop->xwayland_surface);
 		desktop->xwayland_surface.notify = handle_xwayland_surface;
+	}
+#endif
 
 	desktop->gamma_control_manager = wlr_gamma_control_manager_create(
 		server->wl_display);

rootston/meson.build

@@ -1,5 +1,4 @@
-executable(
-	'rootston', [
+sources = [
 	'config.c',
 	'cursor.c',
 	'desktop.c',
@@ -11,7 +10,11 @@ executable(
 	'pointer.c',
 	'tablet_tool.c',
 	'xdg_shell_v6.c',
-		'xwayland.c',
 	'wl_shell.c',
-	], dependencies: wlroots
+]
+if get_option('enable_xwayland')
+	sources += ['xwayland.c']
+endif
+executable(
+	'rootston', sources, dependencies: wlroots
 )

rootston/rootston.ini.example

@@ -1,3 +1,7 @@
+[core]
+# Disable X11 support. Enabled by default.
+xwayland=false
+
 # Single output configuration. String after semicolon must match output's name.
 [output:VGA-1]
 # Set logical (layout) coordinates for this screen