1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
# A debhelper build system class for handling simple Makefile based projects.
#
# Copyright: © 2008 Joey Hess
# © 2008-2009 Modestas Vainius
# License: GPL-2+
package Debian::Debhelper::Buildsystem::makefile;
use strict;
use warnings;
use Debian::Debhelper::Dh_Lib qw(dpkg_architecture_value escape_shell clean_jobserver_makeflags is_cross_compiling compat
should_use_root gain_root_cmd error);
use parent qw(Debian::Debhelper::Buildsystem);
my %DEB_DEFAULT_TOOLS = (
'CC' => 'gcc',
'CXX' => 'g++',
'PKG_CONFIG' => 'pkg-config',
);
# make makes things difficult by not providing a simple way to test
# whether a Makefile target exists. Using -n and checking for a nonzero
# exit status is not good enough, because even with -n, make will
# run commands needed to eg, generate include files -- and those commands
# could fail even though the target exists -- and we should let the target
# run and propagate any failure.
#
# Using -n and checking for at least one line of output is better.
# That will indicate make either wants to run one command, or
# has output a "nothing to be done" message if the target exists but is a
# noop.
#
# However, that heuristic is also not good enough, because a Makefile
# could run code that outputs something, even though the -n is asking
# it not to run anything. (Again, done for includes.) To detect this false
# positive, there is unfortunately only one approach left: To
# look for the error message printed by make when a target does not exist.
#
# This could break if make's output changes. It would only break a minority
# of packages where this latter test is needed. The best way to avoid that
# problem would be to fix make to have this simple and highly useful
# missing feature.
#
# A final option would be to use -p and parse the output data base.
# It's more practical for dh to use that method, since it operates on
# only special debian/rules files, and not arbitrary Makefiles which
# can be arbitrarily complicated, use implicit targets, and so on.
sub exists_make_target {
my $this=shift;
my $target=shift;
my @opts=("-s", "-n", "--no-print-directory");
my $buildpath = $this->get_buildpath();
unshift @opts, "-C", $buildpath if $buildpath ne ".";
my $pid = open(MAKE, "-|");
defined($pid) || error("fork failed: $!");
if (! $pid) {
open(STDERR, ">&STDOUT");
$ENV{LC_ALL}='C';
exec($this->{makecmd}, @opts, $target, @_);
exit(1);
}
local $/=undef;
my $output=<MAKE>;
chomp $output;
close MAKE;
return defined $output
&& length $output
&& $output !~ /\*\*\* No rule to make target (`|')\Q$target\E'/;
}
sub do_make {
my $this=shift;
# Avoid possible warnings about unavailable jobserver,
# and force make to start a new jobserver.
clean_jobserver_makeflags();
# Note that this will override any -j settings in MAKEFLAGS.
my $parallel = $this->get_parallel();
if ($parallel == 0 or $parallel > 1) {
# We have to use the empty string for "unlimited"
$parallel = '' if $parallel == 0;
unshift(@_, "-j${parallel}");
} else {
unshift(@_, '-j1');
}
my @root_cmd;
if (exists($this->{_run_make_as_root}) and $this->{_run_make_as_root}) {
@root_cmd = gain_root_cmd();
}
$this->doit_in_builddir(@root_cmd, $this->{makecmd}, @_);
}
sub make_first_existing_target {
my $this=shift;
my $targets=shift;
foreach my $target (@$targets) {
if ($this->exists_make_target($target, @_)) {
$this->do_make($target, @_);
return $target;
}
}
return undef;
}
sub DESCRIPTION {
"simple Makefile"
}
sub new {
my $class=shift;
my $this=$class->SUPER::new(@_);
$this->{makecmd} = (exists $ENV{MAKE}) ? $ENV{MAKE} : "make";
return $this;
}
sub check_auto_buildable {
my $this=shift;
my ($step) = @_;
if (-e $this->get_buildpath("Makefile") ||
-e $this->get_buildpath("makefile") ||
-e $this->get_buildpath("GNUmakefile"))
{
# This is always called in the source directory, but generally
# Makefiles are created (or live) in the build directory.
return 1;
} elsif ($this->check_auto_buildable_clean_oos_buildir(@_)
and $this->check_auto_buildable('configure')) {
# Assume that the package can be cleaned (i.e. the build directory can
# be removed) as long as it is built out-of-source tree and can be
# configured. This is useful for derivative buildsystems which
# generate Makefiles.
return 1;
}
return 0;
}
sub build {
my $this=shift;
if (not $this->_is_targetbuildsystem
and ref($this) eq 'Debian::Debhelper::Buildsystem::makefile'
and is_cross_compiling()) {
# Only inject build tools variables during cross-compile when
# makefile is the explicit *main* build system.
for my $var (sort(keys(%DEB_DEFAULT_TOOLS))) {
my $tool = $DEB_DEFAULT_TOOLS{$var};
if ($ENV{$var}) {
unshift @_, $var . "=" . $ENV{$var};
} else {
unshift @_, $var . "=" . dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "-" . $tool;
}
}
}
if (ref($this) eq 'Debian::Debhelper::Buildsystem::makefile' and not compat(10)) {
unshift @_, "INSTALL=install --strip-program=true";
}
$this->do_make(@_);
}
sub test {
my $this=shift;
$this->make_first_existing_target(['test', 'check'], @_);
}
sub install {
my $this=shift;
my $destdir=shift;
if (ref($this) eq 'Debian::Debhelper::Buildsystem::makefile' and not compat(10)) {
unshift @_, "INSTALL=install --strip-program=true";
}
if ( -f $this->get_buildpath('libtool')) {
$this->disable_parallel();
}
if (should_use_root('debhelper/upstream-make-install') and $< != 0) {
$this->{_run_make_as_root} = 1;
}
$this->make_first_existing_target(['install'],
"DESTDIR=$destdir",
"AM_UPDATE_INFO_DIR=no", @_);
}
sub clean {
my $this=shift;
if (!$this->rmdir_builddir()) {
$this->make_first_existing_target(['distclean', 'realclean', 'clean'], @_);
}
}
1
|
