Re: Silent and verbose make

[Emmanuel Mayssat]

It seems to be possible with the .SILENT special target

$ cat Makefile
ifeq ($(V),0)
.SILENT:
endif

all: tata toto

toto:
echo 'hi'
tata:
echo 'hello'


$ make V=0 V=1 V=0 V=1

Now if you alias
make to make V=0
you have a silent make by default

To return to normal behavior, you can just
make V=1

Note that .SILENT is deprecated
It seems that make should have a command line option to return to the
verbose mode
That is
if I alias 'make' to let's say 'make -s VAR=123', then I could still run
make --verbose to return to the verbose mode....
Obviously if I run \make (to bypass the alias), I lose my other settings in
the alias.

Could this feature be implemented in the next minor version?

--
Emmanuel



On Tue, Nov 22, 2016 at 8:49 PM, Bob Proulx <address@hidden> wrote:

> Emmanuel Mayssat wrote:
> > I am using a wrapper for the make utility.
> > By default my wrapper is to run in silent mode (i.e. with -s flag)
> > I would like to be able to reverse the silent flag with the same command
> > line (more elegant!)
> >
> > Is there something like
> > make -s -v
> > that would return make to a verbose mode?
>
> Are you talking about the new default automake mode?
>
>   https://autotools.io/automake/silent.html
> <https://isolate.menlosecurity.com/readonly/https://autotools.io/automake/silent.html>
>
> > PS: Of course 'make' would work, but I don't want to touch the command
> > prefix
> > PS: Something like make VAR=value VAR=other_value VAR=
> final_value which is
> > a trick I use all the time. Is there something similar to reverse the
> > silent mode?
>
> If it is the new automake silent default then try:
>
>   configure --disable-silent-rules
>
> Or try:
>
>   make V=1
>
> You can set the default make command.  Here are some examples.  Set as
> you desire.
>
>   (setq compile-command "make")
>   (setq compile-command "make V=0")
>   (setq compile-command "make -j4 V=0")
>
> Of course if you are talking about something other than the new silent
> automake rules then the above doesn't apply.
>
> Bob
>