build: add option to disable tests

When building for a product, tests are not needed.

Besides, one test requires a C++ compiler, which is not always
available.

So, add an option to configure to disable building tests altogether.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: James Hilliard <james.hilliard1@gmail.com>

meson.build

@@ -84,7 +84,9 @@ subdir('src')
 if get_option('libraries')
 	subdir('cursor')
 	subdir('egl')
-	subdir('tests')
+	if get_option('tests')
+		subdir('tests')
+	endif
 	if get_option('documentation')
 		subdir('doc')
 	endif

meson_options.txt

@@ -6,6 +6,10 @@ option('scanner',
   description: 'Compile wayland-scanner binary',
   type: 'boolean',
   value: 'true')
+option('tests',
+  description: 'Compile Wayland tests',
+  type: 'boolean',
+  value: 'true')
 option('documentation',
   description: 'Build the documentation (requires Doxygen, dot, xmlto, xsltproc)',
   type: 'boolean',