Add test for get_option(b_xxx) on reconfigure.

run_unittests.py

@@ -1948,6 +1948,11 @@ endian = 'little'
         crossfile.flush()
         self.init(testdir, ['--cross-file='+crossfile.name])
 
+    def test_reconfigure(self):
+        testdir = os.path.join(self.unit_test_dir, '13 reconfigure')
+        self.init(testdir, ['-Db_lto=true'], default_args=False)
+        self.build('reconfigure')
+
 
 class LinuxArmCrossCompileTests(BasePlatformTests):
     '''

test cases/common/47 options/meson.build

@@ -12,6 +12,7 @@ if get_option('combo_opt') != 'combo'
   error('Incorrect value to combo option.')
 endif
 
+# If the default changes, update test cases/unit/13 reconfigure
 if get_option('b_lto') != false
   error('Incorrect value in base option.')
 endif

test cases/unit/13 reconfigure/meson.build

@@ -0,0 +1,5 @@
+project('reconfigure test', ['c'])
+
+if get_option('b_lto') != true
+  error('b_lto not set')
+endif