Follow-up Comment #7, bug #51974 (project make):
Either the 'new' documentation is not entirely correct, or there is a bug in
the current expansion logic (or I am misunderstanding something).
The documentation states:
----
4. Expand elements of the line which appear in an immediate expansion context
(see How make Reads a Makefile).
5. Scan the line for a separator character, such as ‘:’ or ‘=’, to
determine whether the line is a macro assignment or a rule (see Recipe
Syntax).
6. Internalize the resulting operation and read the next line.
An important consequence of this is that a macro can expand to an entire rule,
if it is one line long.
----
The last statement assumes that a line containing only a variable reference,
such as
$(myrule)
presents an immediate expansion context, although it does not meet any of the
stated forms of an immediate expansion context.
If it were, then this should also work:
myassignment = var = val
$(myassignment)
Step 5 of the list above would apply to the last line of this example (it
expands to 'var = val'). However, make fails with a "missing separator" error.
A slightly different error, "empty variable name", results from this
variation:
myassignment = var := val
$(myassignment)
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