[GRASS-dev] lib/nviz/Makefile: Makefile:14: Extraneous text after `else' directive

[Glynn Clements]

Markus Neteler wrote:

> >> the lib/nviz/Makefile fails with
> >>
> >> [neteler at xblade14 nviz]$ make
> >> Makefile:14: Extraneous text after `else' directive
> >> Makefile:17: *** only one `else' per conditional.  Stop.
> >>
> >> It reads:
> >>
> >>    7  ifeq ($(OPENGL_WINDOWS),1)
> >>    8  EXTRA_LIBS += $(OPENGLLIB) $(OPENGLULIB) -lgdi32
> >>    9  else ifeq ($(OPENGL_X11),1)
> >>   10  EXTRA_LIBS += $(XLIBPATH) $(OPENGLLIB) $(OPENGLULIB)
> >>   11  EXTRA_CFLAGS += $(XCFLAGS)
> >>   12  else
> >>   13  EXTRA_LIBS += $(OPENGLLIB) $(OPENGLULIB)
> >>   14  endif
> >>
> >> How to fix this?
> >>
> >> thanks
> >> Markus
> >
> > Oh, I think I did that.  Haven't had problems before.  From the Gnu make
> > manual:
> >
> >     conditional-directive
> >     text-if-one-is-true
> >     else conditional-directive
> >     text-if-true
> >     else
> >     text-if-false
> >     endif
> >
> > Are you using a non-Gnu make?
> 
> I am using GNU make on the grass.osgeo.org server (which I currently restore):
> 
> [neteler at xblade14 grass6_svn_head_progmanual]$ rpm -qil make-3.80-7

Looking at the ChangeLog and NEWS files, this feature appears to have
been introduced in 3.81:

* The "else" conditional line can now be followed by any other valid
  conditional on the same line: this does not increase the depth of the
  conditional nesting, so only one "endif" is required to close the
  conditional.

-- 
Glynn Clements <glynn at gclements.plus.com>