Change ifdef/if defined to simple if's.
diff --git a/unix/mpyconfig.h b/unix/mpyconfig.h
index 117892b..d9e03f7 100644
--- a/unix/mpyconfig.h
+++ b/unix/mpyconfig.h
@@ -1,10 +1,10 @@
// options to control how Micro Python is built
-//#define MICROPY_ENABLE_FLOAT
-#define MICROPY_EMIT_ENABLE_CPYTHON
-#define MICROPY_EMIT_ENABLE_X64
-//#define MICROPY_EMIT_ENABLE_THUMB
-#define MICROPY_EMIT_ENABLE_INLINE_THUMB
+#define MICROPY_ENABLE_FLOAT (1)
+#define MICROPY_EMIT_CPYTHON (1)
+#define MICROPY_EMIT_X64 (0)
+#define MICROPY_EMIT_THUMB (0)
+#define MICROPY_EMIT_INLINE_THUMB (0)
// type definitions for the specific machine