RE: Pattern rule prereqs are variables with % in them

[Paul D. Smith]

%% "Boucher, Jean" <address@hidden> writes:

  bj> %.lib: $(%.lib_objs) $(%.lib_libs)
  bj>   @echo 'Hit .lib .lib_objs pattern rule for $@, prereqs=$^';\

You can't do this.

Variable and function references in target and prerequisite lists are
expanded immediately when the makefile is read in.

The "%" in patterns is not filled in until later, when make is trying to
find a rule to build a target.

So, these references to variables '%.lib_objs' and '%.lib_libs' are
expanding to the empty string.

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