9.5 Special handling for LIBOBJS and ALLOCA

Automake explicitly recognizes the use of @LIBOBJS@ and @ALLOCA@, and uses this information, plus the list of LIBOBJS files derived from `configure.in' to automatically include the appropriate source files in the distribution (see section 15. What Goes in a Distribution). These source files are also automatically handled in the dependency-tracking scheme; see See section 9.14 Automatic dependency tracking.

@LIBOBJS@ and @ALLOCA@ are specially recognized in any `_LDADD' or `_LIBADD' variable.