stage1: always optimize blake and softfloat even in debug mode

src/cache_hash.cpp

@@ -6,6 +6,7 @@
  */
 
 #include "cache_hash.hpp"
+#include "all_types.hpp"
 #include "buffer.hpp"
 #include "os.hpp"
 
@@ -219,6 +220,9 @@ Error cache_hit(CacheHash *ch, Buf *out_digest) {
 
     buf_append_str(ch->manifest_file_path, ".txt");
 
+    if ((err = os_make_path(ch->manifest_dir)))
+        return err;
+
     if ((err = os_file_open_lock_rw(ch->manifest_file_path, &ch->manifest_file)))
         return err;