aboutsummaryrefslogtreecommitdiff
path: root/build2/cc/install-rule.cxx
blob: e74104c3a53fb8a6d55b32df3226e4d6cd4116aa (plain)
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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
// file      : build2/cc/install-rule.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

#include <build2/cc/install-rule.hxx>

#include <build2/algorithm.hxx>

#include <build2/bin/target.hxx>

#include <build2/cc/utility.hxx>
#include <build2/cc/link-rule.hxx> // match()

using namespace std;

namespace build2
{
  namespace cc
  {
    using namespace bin;

    // install_rule
    //
    install_rule::
    install_rule (data&& d, const link_rule& l)
        : common (move (d)), link_ (l) {}

    const target* install_rule::
    filter (action a, const target& t, prerequisite_iterator& i) const
    {
      // NOTE: see libux_install_rule::filter() if changing anything here.

      const prerequisite& p (i->prerequisite);

      // If this is a shared library prerequisite, install it as long as it
      // is in the same amalgamation as we are.
      //
      // Less obvious: we also want to install a static library prerequisite
      // of a library (since it could be referenced from its .pc file, etc).
      //
      // Note: for now we assume these prerequisites never come from see-
      // through groups.
      //
      otype ot (link_type (t).type);

      bool st (t.is_a<exe>  () || t.is_a<libs> ()); // Target needs shared.
      bool at (t.is_a<liba> () || t.is_a<libs> ()); // Target needs static.

      if ((st && (p.is_a<libx> () || p.is_a<libs> ())) ||
          (at && (p.is_a<libx> () || p.is_a<liba> ())))
      {
        const target* pt (&search (t, p));

        // If this is the lib{}/libu{} group, pick a member which we would
        // link. For libu{} we want the "see through" logic.
        //
        if (const libx* l = pt->is_a<libx> ())
          pt = &link_member (*l, a, link_info (t.base_scope (), ot));

        if ((st && pt->is_a<libs> ()) || (at && pt->is_a<liba> ()))
          return pt->in (t.weak_scope ()) ? pt : nullptr;

        // See through libux{}. Note that we are always in the same project
        // (and thus amalgamation).
        //
        if (pt->is_a<libux> ())
          return pt;
      }

      // The rest of the tests only succeed if the base filter() succeeds.
      //
      const target* pt (file_rule::filter (a, t, p));
      if (pt == nullptr)
        return pt;

      // Don't install executable's prerequisite headers and module
      // interfaces.
      //
      // Note that if they come from a group, then we assume the entire
      // group is not to be installed.
      //
      if (t.is_a<exe> ())
      {
        if (x_header (p))
          pt = nullptr;
        else if (p.type.see_through)
        {
          for (i.enter_group (); i.group (); )
          {
            if (x_header (*++i))
              pt = nullptr;
          }
        }

        if (pt == nullptr)
          return pt;
      }

      // Here is a problem: if the user spells the obj*/bmi*{} targets
      // explicitly, then the source files, including headers/modules may be
      // specified as preprequisites of those targets and not of this target.
      // While this can be worked around for headers by also listing them as
      // prerequisites of this target, this won't work for modules (since they
      // are compiled). So what we are going to do here is detect bmi*{} and
      // translate them to their mxx{} (this doesn't quite work for headers
      // since there would normally be many of them).
      //
      // Note: for now we assume bmi*{} never come from see-through groups.
      //
      bool g (false);
      if (p.is_a<bmi> () || (g = p.is_a (compile_types (ot).bmi)))
      {
        if (g)
          resolve_group (a, *pt);

        for (prerequisite_member pm:
               group_prerequisite_members (a, *pt, members_mode::maybe))
        {
          // This is tricky: we need to "look" inside groups for mxx{} but if
          // found, remap to the group, not member.
          //
          if (pm.is_a (*x_mod))
          {
            pt = t.is_a<exe> ()
              ? nullptr
              : file_rule::filter (a, *pt, pm.prerequisite);
            break;
          }
        }

        if (pt == nullptr)
          return pt;
      }

      return pt;
    }

    bool install_rule::
    match (action a, target& t, const string& hint) const
    {
      // @@ How do we split the hint between the two?
      //

      // We only want to handle installation if we are also the ones building
      // this target. So first run link's match().
      //
      return link_.match (a, t, hint) && file_rule::match (a, t, "");
    }

    recipe install_rule::
    apply (action a, target& t) const
    {
      recipe r (file_rule::apply (a, t));

      if (a.operation () == update_id)
      {
        // Signal to the link rule that this is update for install. And if the
        // update has already been executed, verify it was done for install.
        //
        auto& md (t.data<link_rule::match_data> ());

        if (md.for_install)
        {
          if (!*md.for_install)
            fail << "target " << t << " already updated but not for install";
        }
        else
          md.for_install = true;
      }
      else // install or uninstall
      {
        // Derive shared library paths and cache them in the target's aux
        // storage if we are un/installing (used in *_extra() functions
        // below).
        //
        static_assert (sizeof (link_rule::libs_paths) <= target::data_size,
                       "insufficient space");

        file* f;
        if ((f = t.is_a<libs> ()) != nullptr && tclass != "windows")
        {
          const string* p (cast_null<string> (t["bin.lib.prefix"]));
          const string* s (cast_null<string> (t["bin.lib.suffix"]));
          t.data (
            link_.derive_libs_paths (*f,
                                     p != nullptr ? p->c_str (): nullptr,
                                     s != nullptr ? s->c_str (): nullptr));
        }
      }

      return r;
    }

    bool install_rule::
    install_extra (const file& t, const install_dir& id) const
    {
      bool r (false);

      if (t.is_a<libs> () && tclass != "windows")
      {
        // Here we may have a bunch of symlinks that we need to install.
        //
        const scope& rs (t.root_scope ());
        auto& lp (t.data<link_rule::libs_paths> ());

        auto ln = [&rs, &id] (const path& f, const path& l)
        {
          install_l (rs, id, f.leaf (), l.leaf (), false);
          return true;
        };

        const path& lk (lp.link);
        const path& so (lp.soname);
        const path& in (lp.interm);

        const path* f (lp.real);

        if (!in.empty ()) {r = ln (*f, in) || r; f = &in;}
        if (!so.empty ()) {r = ln (*f, so) || r; f = &so;}
        if (!lk.empty ()) {r = ln (*f, lk) || r;         }
      }

      return r;
    }

    bool install_rule::
    uninstall_extra (const file& t, const install_dir& id) const
    {
      bool r (false);

      if (t.is_a<libs> () && tclass != "windows")
      {
        // Here we may have a bunch of symlinks that we need to uninstall.
        //
        const scope& rs (t.root_scope ());
        auto& lp (t.data<link_rule::libs_paths> ());

        auto rm = [&rs, &id] (const path& l)
        {
          return uninstall_f (rs, id, nullptr, l.leaf (), false);
        };

        const path& lk (lp.link);
        const path& so (lp.soname);
        const path& in (lp.interm);

        if (!lk.empty ()) r = rm (lk) || r;
        if (!so.empty ()) r = rm (so) || r;
        if (!in.empty ()) r = rm (in) || r;
      }

      return r;
    }

    // libux_install_rule
    //
    libux_install_rule::
    libux_install_rule (data&& d, const link_rule& l)
        : common (move (d)), link_ (l) {}

    const target* libux_install_rule::
    filter (action a, const target& t, prerequisite_iterator& i) const
    {
      const prerequisite& p (i->prerequisite);

      // The "see through" semantics that should be parallel to install_rule
      // above. In particular, here we use libue/libua/libus{} as proxies for
      // exe/liba/libs{} there.
      //
      otype ot (link_type (t).type);

      bool st (t.is_a<libue> () || t.is_a<libus> ()); // Target needs shared.
      bool at (t.is_a<libua> () || t.is_a<libus> ()); // Target needs static.

      if ((st && (p.is_a<libx> () || p.is_a<libs> ())) ||
          (at && (p.is_a<libx> () || p.is_a<liba> ())))
      {
        const target* pt (&search (t, p));

        if (const libx* l = pt->is_a<libx> ())
          pt = &link_member (*l, a, link_info (t.base_scope (), ot));

        if ((st && pt->is_a<libs> ()) || (at && pt->is_a<liba> ()))
          return pt->in (t.weak_scope ()) ? pt : nullptr;

        if (pt->is_a<libux> ())
          return pt;
      }

      const target* pt (install::file_rule::instance.filter (a, t, p));
      if (pt == nullptr)
        return pt;

      if (t.is_a<libue> ())
      {
        if (x_header (p))
          pt = nullptr;
        else if (p.type.see_through)
        {
          for (i.enter_group (); i.group (); )
          {
            if (x_header (*++i))
              pt = nullptr;
          }
        }

        if (pt == nullptr)
          return pt;
      }

      bool g (false);
      if (p.is_a<bmi> () || (g = p.is_a (compile_types (ot).bmi)))
      {
        if (g)
          resolve_group (a, *pt);

        for (prerequisite_member pm:
               group_prerequisite_members (a, *pt, members_mode::maybe))
        {
          if (pm.is_a (*x_mod))
          {
            pt = t.is_a<libue> ()
              ? nullptr
              : install::file_rule::instance.filter (a, *pt, pm.prerequisite);
            break;
          }
        }

        if (pt == nullptr)
          return pt;
      }

      return pt;
    }

    bool libux_install_rule::
    match (action a, target& t, const string& hint) const
    {
      // We only want to handle installation if we are also the ones building
      // this target. So first run link's match().
      //
      return link_.match (a, t, hint) && alias_rule::match (a, t, "");
    }
  }
}