GCC question

[Warren Block]

On Sat, 5 Sep 2015, kpneal at pobox.com wrote:

> On Sat, Sep 05, 2015 at 09:07:00AM -0700, Carl Johnson wrote:
>> As long as this came up, does anybody know of a similar incantation to
>> show the defined rules and symbols for make?  I remember seeing
>> something like that years ago, but I haven't been able to find it
>> since.
>
> There's a bunch of -d suboptions to make in its man page.
>
> Try "-dg1 -dv" as options to make. If that isn't quite right it should
> at least be a starting point.

These are not perfect, but they are useful.  If you use csh/tcsh, 
anyway:

   alias __makevars      'make -ndv |& perl -ne '\''print "$1\n" if /^(?:Command|Global|Internal):(\S+?)\s+/;'\'' | sort -u'

   complete make         'C/F/(FORMATS= FORMATS=html FORMATS=html-split FORMATS=pdf)/' \
                         'p/1/`make -V .ALLTARGETS`/' \
                         'n/-V/`__makevars`/'

'make' [space] [tab] completes from available targets.
'make -V' [space] [tab] completes from known variables.
Both probably miss some.  The variable completion could be 
faster.  Improvements welcome.

(The first is for me, to complete 'make FORMATS=' for docs.)