meson.build: allow disabling the xsetwacom build

xsetwacom pulls in the xorgproto and Xlib dependencies, so let's make
this optional for the (niche) case of where we really only want the
driver built.

Since this is a rather niche case let's make it a boolean true/false
option instead of a feature with "auto".

meson.build

@@ -47,20 +47,24 @@ cflags = [
 add_project_arguments(cc.get_supported_arguments(cflags), language : 'c')
 add_project_arguments('-D_GNU_SOURCE', language : 'c')
 
+build_xsetwacom = get_option('xsetwacom')
 
 # Dependencies
 pkgconfig = import('pkgconfig')
-dep_protos = []
-protos = ['xproto', 'xext', 'kbproto', 'inputproto', 'randrproto']
-foreach proto : protos
-	dep_protos += [dependency(proto)]
-endforeach
 dep_xserver = dependency('xorg-server', version: '>= 1.13.0')
-xlibs = ['x11', 'xi', 'xrandr', 'xinerama']
-dep_xlibs = []
-foreach xlib : xlibs
-	dep_xlibs += [dependency(xlib)]
-endforeach
+if build_xsetwacom
+	dep_protos = []
+	protos = ['xproto', 'xext', 'kbproto', 'inputproto', 'randrproto']
+	foreach proto : protos
+		dep_protos += [dependency(proto)]
+	endforeach
+
+	xlibs = ['x11', 'xi', 'xrandr', 'xinerama']
+	dep_xlibs = []
+	foreach xlib : xlibs
+		dep_xlibs += [dependency(xlib)]
+	endforeach
+endif
 dep_libudev = dependency('libudev')
 dep_m = cc.find_library('m')
 
@@ -282,18 +286,20 @@ if get_option('serial-device-support')
 	)
 endif
 
-xsetwacom_deps = [dep_xlibs, dep_protos, dep_m]
-src_xsetwacom = [
-	config_ver_h,
-	'tools/xsetwacom.c',
-]
-executable(
-	'xsetwacom',
-	src_xsetwacom,
-	dependencies: xsetwacom_deps,
-	include_directories: [dir_include],
-	install: true,
-)
+if build_xsetwacom
+	xsetwacom_deps = [dep_xlibs, dep_protos, dep_m]
+	src_xsetwacom = [
+		config_ver_h,
+		'tools/xsetwacom.c',
+	]
+	executable(
+		'xsetwacom',
+		src_xsetwacom,
+		dependencies: xsetwacom_deps,
+		include_directories: [dir_include],
+		install: true,
+	)
+endif
 
 executable(
 	'pressurecurve',
@@ -337,14 +343,16 @@ endif
 build_unittests = not get_option('unittests').disabled()
 
 if build_unittests
-	xsetwacom_test = executable(
-		'xsetwacom-test',
-		src_xsetwacom + ['test/wacom-test-suite.c', 'test/wacom-test-suite.h'],
-		c_args: ['-DENABLE_TESTS', '-Wno-unused-function'],
-		dependencies: xsetwacom_deps,
-		include_directories: [dir_include, dir_src, dir_src_test],
-	)
-	test('xsetwacom-tests', xsetwacom_test)
+	if build_xsetwacom
+		xsetwacom_test = executable(
+			'xsetwacom-test',
+			src_xsetwacom + ['test/wacom-test-suite.c', 'test/wacom-test-suite.h'],
+			c_args: ['-DENABLE_TESTS', '-Wno-unused-function'],
+			dependencies: xsetwacom_deps,
+			include_directories: [dir_include, dir_src, dir_src_test],
+		)
+		test('xsetwacom-tests', xsetwacom_test)
+	endif
 
 	# Rebuild the driver with -DENABLE_TESTS to enable all the various
 	# local tests in the files. This is built as a module (like the

meson_options.txt

@@ -48,3 +48,8 @@ option('wacom-gobject',
 	value: 'auto',
 	description: 'Build the Wacom GObject library and associated tools [default: auto]'
 )
+option('xsetwacom',
+	type: 'boolean',
+	value: 'true',
+	description: 'Build the xsetwacom tool [default: true]'
+)