meson: Allow tests to be optional

meson.build

@@ -204,6 +204,10 @@ if get_option('stemming')
     endif
 endif
 
+if get_option('installed_tests') and not get_option('tests')
+  error('-Dinstalled_tests=true is incompatible with -Dtests=false')
+endif
+
 # use gperf for faster string -> enum matching
 gperf = find_program('gperf')
 
@@ -227,7 +231,9 @@ subdir('po/')
 subdir('data/')
 subdir('contrib/')
 subdir('docs/')
-subdir('tests/')
+if get_option('tests')
+    subdir('tests/')
+endif
 if get_option('qt')
     subdir('qt/')
 endif

meson_options.txt

@@ -65,6 +65,16 @@ option('install-docs',
        value : true,
        description : 'Install documentation for API and specification'
 )
+option('tests',
+       description: 'Build the test suite',
+       type: 'boolean',
+       value: true
+)
+option('installed_tests',
+       description: 'Install the test suite',
+       type: 'boolean',
+       value: true
+)
 
 #
 # For development

tests/meson.build

@@ -1,6 +1,8 @@
 # Meson definition for AppStream Tests
 
-subdir('installed-tests/')
+if get_option('installed_tests')
+    subdir('installed-tests/')
+endif
 
 as_test_env = []
 as_test_args = [meson.current_source_dir()]