Allow users to make `make V=0` the default by using `./configure --enable-silent-rules`

[mkoeppe]

As a follow-up to #21539, let's have ./configure --enable-silent-rules make make V=0 the default.
(See Automake silent rules)

Related:

• Make V=0 the default for sage -i #31151: Make V=0 the default for sage -i

CC: @embray @jdemeyer @vbraun @seblabbe

Component: build

Issue created by migration from https://trac.sagemath.org/ticket/21589

[mkoeppe]

Changed dependencies from #21479 to #21479, #21539

[jhpalmieri]

comment:2

I'm not convinced this is a good idea. On some computers, it will build gcc for 45 minutes, and having no output printed to the screen for that long may look indistinguishable from the computer hanging.

[mkoeppe]

comment:3

To clarify, the default is the current verbose output.
With #21539, users type "make V=0" if they are tired of seeing the output.
With this ticket, users type "./configure --enable-silent-rules" once if they are tired of typing "V=0".

[jhpalmieri]

comment:5

Okay, I misunderstood.

[jhpalmieri]

comment:6

In that case, would it also be possible for ./configure --enable-silent-rules to create a Makefile which is more silent than the one at #21539, and in particular which silences the lines sage-logger -p 'sage-spkg PACKAGE' 'LOGFILE'?

[mkoeppe]

comment:7

The Makefile rules are already flexible enough for that in #21539, using $(AM_V_at) instead of @ (borrowed from automake).

The present ticket would just set some defaults of Makefile variables. The rules won't have to change.

[mkoeppe]

Description changed:

--- 
+++ 
@@ -1,5 +1,3 @@
 As a follow-up to #21539, let's have `./configure --enable-silent-rules` make `make V=0` the default.
 (See [Automake silent rules](https://www.gnu.org/software/automake/manual/html_node/Automake-Silent-Rules.html#Automake-Silent-Rules))
 
-I'm marking this as dependent on #21479 because that ticket introduces the `config.status`-generated file `sage-env-config`, which we'll need.
-

[mkoeppe]

Changed dependencies from #21479, #21539 to none

[mkoeppe]

comment:9

pushing these forward to 9.2

[slel]

Description changed:

--- 
+++ 
@@ -1,3 +1,6 @@
 As a follow-up to #21539, let's have `./configure --enable-silent-rules` make `make V=0` the default.
 (See [Automake silent rules](https://www.gnu.org/software/automake/manual/html_node/Automake-Silent-Rules.html#Automake-Silent-Rules))
 
+Related:
+
+- #31151: Make `V=0` the default for `sage -i`

[mkoeppe]

comment:13

Setting new milestone based on a cursory review of ticket status, priority, and last modification date.