MMDevice/MMCore: Make Meson build tests optional

MMCore/meson.build

@@ -19,7 +19,21 @@ endif
 
 # MMDevice must be copied into subprojects/ for this experimental build to work
 # (unless MMCore is itself being used as a subproject).
-mmdevice_proj = subproject('MMDevice')
+if get_option('tests').enabled()
+    tests_option = 'enabled'
+elif get_option('tests').disabled()
+    tests_option = 'disabled'
+else
+    tests_option = 'auto'
+endif
+mmdevice_proj = subproject(
+    'MMDevice',
+    # Propagate value of 'tests' option ('yield: true' in MMDeivce's 'tests'
+    # option did not seem to work; Meson 1.3.1).
+    default_options: {
+        'tests': tests_option,
+    },
+)
 mmdevice_dep = mmdevice_proj.get_variable('mmdevice')
 
 mmcore_sources = files(

MMCore/meson_options.txt

@@ -0,0 +1,3 @@
+option('tests', type: 'feature', value: 'enabled',
+    description: 'Build unit tests',
+)

MMCore/unittest/meson.build

@@ -5,6 +5,8 @@ catch2_with_main_dep = dependency(
     'catch2-with-main',
     allow_fallback: true,
     include_type: 'system',
+    required: get_option('tests'),
+    disabler: true,
 )
 
 mmcore_test_sources = files(
@@ -28,4 +30,4 @@ mmcore_test_exe = executable(
     ],
 )
 
-test('MMCore tests', mmcore_test_exe)
+test('MMCore tests', mmcore_test_exe)

MMDevice/meson_options.txt

@@ -0,0 +1,3 @@
+option('tests', type: 'feature', value: 'enabled', yield: true,
+    description: 'Build unit tests',
+)

MMDevice/unittest/meson.build

@@ -5,6 +5,8 @@ catch2_with_main_dep = dependency(
     'catch2-with-main',
     allow_fallback: true,
     include_type: 'system',
+    required: get_option('tests'),
+    disabler: true,
 )
 
 mmdevice_test_sources = files(
@@ -23,4 +25,4 @@ mmdevice_test_exe = executable(
 test(
     'MMDevice unit tests',
     mmdevice_test_exe,
-)
+)