build: make precompiled headers more useful

This can reduce the compilation time of a release
build (without tests) by more than 40%

Refs: #5212
Change-Id: I977aff0c0c7becbfee8a8b55605b81d0c014829b
diff --git a/tools/nfdc/command-definition.cpp b/tools/nfdc/command-definition.cpp
index 08952fd..c98197e 100644
--- a/tools/nfdc/command-definition.cpp
+++ b/tools/nfdc/command-definition.cpp
@@ -26,6 +26,7 @@
 #include "command-definition.hpp"
 #include "status-report.hpp"
 
+#include <boost/lexical_cast.hpp>
 #include <ndn-cxx/util/logger.hpp>
 
 namespace nfd::tools::nfdc {