Re: a small suggestion to make

[Johan Bezem]

Hi,

address@hidden wrote:
> ...      
> If the include begin with "-" or the shell command
> begin with "@", then make output only give the error
> target, without more information.

> From the manual, section "Including other makefiles":
 If you want `make' to simply ignore a makefile which does
 not exist and cannot be remade, with no error message, use
 the `-include' directive instead of `include', like this:

    -include FILENAMES...

 This acts like `include' in every way except that there is
 no error (not even a warning) if any of the FILENAMES do
 not exist.
> From the manual, section "Command echoing":
 Normally `make' prints each command line before it is
 executed.  We call this "echoing" because it gives the
 appearance that you are typing the commands yourself.

 When a line starts with `@', the echoing of that line is suppressed.

I personally use a variable to contain '@' or not, like "export YT_S=@", and prefix all 
(relevant!) command lines with "$(YT_S)", so I can switch on the echoing at will.
The ".SILENT" special built-in target (without prerequisites) is far too global for my 
taste, and I could also create a shell-alias for "make --silent".

> I also found there are some other complain in internet
> about --debug or -p output information is not readable
> or enough for makefile developer. :-(
> To me, there are two information is important:
> 1. what the shell command is execute.

See above, about '@'.

> 2. which makefile the current shell command locate in.

See the make 3.80 manual, section "The Variable `MAKEFILE_LIST'".
While not exactly what you want, you can get at least some help as to which 
makefiles have been read.

> ...

I'm not familiar enough with make's sources to comment on your adaptations.

HTHA,

Johan
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