[bug #63352] nested conditional wrongly reports extraneous endif

[Paul D. Smith]

Update of bug #63352 (project make):

                  Status:                    None => Not A Bug              
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #3:

This is not a bug in GNU make.

Your makefile is malformed; make conditional statements must have a space
after them in order to be recognized.  Your makefile:

ifneq (,)
  ifeq(,)
  endif
endif

is equivalent (to the GNU make parser) to this:

ifneq (,)
  yadayadayada
  endif
endif


As you can see, you _DO_ have an extraneous endif here; you have one *ifneq*
and two *endif*s.

The reason the issue "only manifests when the outer condition fails" is
because when the outer condition fails, the contents of the if-statement are
not parsed by the make parser so make doesn't realize that the text is
invalid.  This is a feature, not a bug: many makefiles make use of this to
allow content in a makefile that would otherwise be considered a syntax
error.

If you change it so the outer condition succeeds, and make _does_ parse the
content, then you get an error which should point you to the problem:

$ cat Makefile
ifeq (,)
  ifeq(,)
  endif
endif

$ make
Makefile:2: *** missing separator.  Stop.


Obviously to make your original makefile correct, you just need to add a space
after the *ifeq*:

ifneq (,)
  ifeq (,)
  endif
endif



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