I generally agree when it comes to standalone software, but not for libraries. SQLite is both. Setting a compiler flag is reasonable for the common case where

I generally agree when it comes to standalone software, but not for libraries. SQLite is both. Setting a compiler flag is reasonable for the common case where it is included as a header file in a C/C++ application. It is certainly inconvenient when you design with that feature in mind, but can't rely on it being part of the standard binary distributions.