Update meson.build
diff --git a/src/meson.build b/src/meson.build
index ee5b8cc..0065e8f 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -19,6 +19,7 @@
   'fcmatrix.c',
   'fcname.c',
   'fcobjs.c',
+  'fcopentype.c',
   'fcpat.c',
   'fcrange.c',
   'fcserialize.c',