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
|
// file : libbuild2/dist/rule.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <libbuild2/dist/rule.hxx>
#include <libbuild2/scope.hxx>
#include <libbuild2/target.hxx>
#include <libbuild2/algorithm.hxx>
#include <libbuild2/diagnostics.hxx>
using namespace std;
namespace build2
{
namespace dist
{
bool rule::
match (action, target&, const string&) const
{
return true; // We always match.
}
recipe rule::
apply (action a, target& t) const
{
const scope& rs (t.root_scope ());
const dir_path& src_root (rs.src_path ());
const dir_path& out_root (rs.out_path ());
// If we can, go inside see-through groups.
//
for (prerequisite_member pm:
group_prerequisite_members (a, t, members_mode::maybe))
{
// Note: no exclusion tests, we want all of them (and see also the
// dist_include() override).
// Skip prerequisites imported from other projects.
//
if (pm.proj ())
continue;
// We used to always search and match but that resulted in the
// undesirable behavior in case one of the "source" files is
// missing. In this case we would enter a target as "output", this
// rule would match it, and then dist_execute() would ignore it by
// default.
//
// So now if this is a file target (we still want to always "see
// through" other targets like aliases), we will only match it if (1)
// it exists in src or (2) it exists as a target. It feels like we
// don't need the stronger "... and not implied" condition since if it
// is mentioned as a target, then it is in out (we don't do the same
// target in both src/out).
//
// @@ Note that this is still an issue in a custom dist rule.
//
const target* pt (nullptr);
if (pm.is_a<file> ())
{
pt = pm.load ();
if (pt == nullptr)
{
const prerequisite& p (pm.prerequisite);
// Search for an existing target or existing file in src.
//
const prerequisite_key& k (p.key ());
pt = k.tk.type->search (t, k);
if (pt == nullptr)
{
// Skip it if it's outside of the project (e.g., an executable
// "imported" in an ad hoc way).
//
if (p.dir.absolute () &&
!p.dir.sub (src_root) &&
!p.dir.sub (out_root))
continue;
fail << "prerequisite " << k << " is not existing source file "
<< "nor known output target" << endf;
}
search_custom (p, *pt); // Cache.
}
}
else
pt = &pm.search (t);
// Don't match targets that are outside of our project.
//
if (pt->dir.sub (out_root))
build2::match (a, *pt);
}
return noop_recipe; // We will never be executed.
}
}
}
|
