On 12/15/09, Shaun Jackman <sjack...@bcgsc.ca> wrote: > How in make do I achieve the equivalent of > > if defined(a) || defined(b) >
You can be explicit and use two ifdefs: tmp=0 ifdef a tmp=1 endif ifdef b tmp=1 endif ifeq ($(tmp),1) do stuff endif Or if you just want to see if either variable is non-empty, you can do something like: ifneq (,$(a)$(b)) do stuff endif That will execute if either variable is non-empty. Note that these aren't equivalent in all cases. If 'a' is empty and b=$(a), then the first case will be true (since 'b' is defined), but in the single ifneq test it will be false since both variables expand to be empty. So I guess it depends on what you mean by "defined". -Mike _______________________________________________ Help-make mailing list Help-make@gnu.org http://lists.gnu.org/mailman/listinfo/help-make
