1 1 12.1 `$<' in Ordinary Make Rules 1 ================================ 1 1 Posix says that the `$<' construct in makefiles can be used only in 1 inference rules and in the `.DEFAULT' rule; its meaning in ordinary 1 rules is unspecified. Solaris `make' for instance replaces it with the 1 empty string. OpenBSD (3.0 and later) `make' diagnoses these uses and 1 errors out. 1