oops. I forgot to add prefix-config.cc to repo. Thank you, francesco!

server/prefix-config.cc

@@ -0,0 +1,11 @@
+#include "prefix-config.hh"
+
+// #define HTML_DIR via -D commandline / Makefile option
+
+#ifndef HTML_DIR
+#define HTML_DIR "../html"
+#endif
+
+#define STR(x) #x
+
+const char* const html_directory = STR(HTML_DIR);