GNU make differences in multiline variable declarations

Question

I read this question, and I was surprised it wasn't working:

Why GNU Make canned recipe doesn't work?

So I tried it myself and got the same results. Here's an example makefile:

define foo bar baz endef  define bar =  foo baz endef  $(info foo: $(foo)) $(info bar: $(bar))  all: 

And here's the output from running it:

$ make foo: bar baz bar:  make: Nothing to be done for `all'. 

What's happening here? The GNU make manual seems to indicate that these two variable declarations should be the same - what am I missing here?

Edit:

Some quotations from the manual that I was referring to:

3.7 How make Reads a Makefile

define immediate   deferred endef  define immediate =   deferred endef 

5.8 Defining Canned Recipes

Here is an example of defining a canned recipe:

 define run-yacc =  yacc $(firstword $^)  mv y.tab.c $@  endef 

6.8 Defining Multi-Line Variables

... You may omit the variable assignment operator if you prefer. If omitted, make assumes it to be ‘=’ and creates a recursively-expanded variable...

As you can see, the canned recipes section explicitly uses the = case. I'm using GNU Make 3.81.

Answer 1

From the CHANGELOG in 3.82:

* read.c (do_define): Modify to allow assignment tokens (=, :=, etc.) after a define, to create variables with those flavors. 

It seems like using '=' isn't supported prior to that in define statements