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# Copyright (C) 2003-2018 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
package Automake::SilentRules;
use Automake::Utils;
use Automake::Variable;
use Exporter 'import';
use vars qw (@EXPORT);
@EXPORT = qw (verbose_flag verbose_nodep_flag silent_flag
define_verbose_texinfo define_verbose_libtool handle_silent);
# Silent rules handling functions.
# verbose_flag (NAME)
# -------------------
# Contents of '%VERBOSE%' variable to expand before rule command.
sub verbose_flag
{
my ($name) = @_;
return '$(' . verbose_var ($name) . ')';
}
sub verbose_nodep_flag
{
my ($name) = @_;
return '$(' . verbose_var ($name) . subst ('am__nodep') . ')';
}
# silent_flag
# -----------
# Contents of %SILENT%: variable to expand to '@' when silent.
sub silent_flag ()
{
return verbose_flag ('at');
}
# Engage the needed silent rules machinery for assorted texinfo commands.
sub define_verbose_texinfo ()
{
my @tagvars = ('DVIPS', 'MAKEINFO', 'INFOHTML', 'TEXI2DVI', 'TEXI2PDF');
foreach my $tag (@tagvars)
{
define_verbose_tagvar($tag);
}
define_verbose_var('texinfo', '-q');
define_verbose_var('texidevnull', '> /dev/null');
}
# Engage the needed silent rules machinery for 'libtool --silent'.
sub define_verbose_libtool ()
{
define_verbose_var ('lt', '--silent');
return verbose_flag ('lt');
}
sub handle_silent ()
{
# Define "$(AM_V_P)", expanding to a shell conditional that can be
# used in make recipes to determine whether we are being run in
# silent mode or not. The choice of the name derives from the LISP
# convention of appending the letter 'P' to denote a predicate (see
# also "the '-P' convention" in the Jargon File); we do so for lack
# of a better convention.
define_verbose_var ('P', 'false', ':');
# *Always* provide the user with '$(AM_V_GEN)', unconditionally.
define_verbose_tagvar ('GEN');
define_verbose_var ('at', '@');
}
1;
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