- /// fb__ is only used to open files, the stream is accessed through is.
- std::filebuf fb__;
- /// gz__ is only used to open files, the stream is accessed through is.
- gz::gzstreambuf gz__;
+ /// fb_ is only used to open files, the stream is accessed through is.
+ std::filebuf fb_;
+
+#ifdef USE_COMPRESSION
+ /// gz_ is only used to open files, the stream is accessed through is.
+ gz::gzstreambuf gz_;
+#endif