Hi, Larry, I believe that expansion goes to the system one, according to my post. The inclusion of the param.h happens here: sqlite3.c@ 31564: #if SQLITE_ENABLE_LOCKING_STYLE /* # include <sys/ioctl.h> */ # include <sys/file.h> # include <sys/param.h> #endif /* SQLITE_ENABLE_LOCKING_STYLE */ I have no idea what the #if condition should or shouldn't do. But I guess it is defined in my build... Thank you.