diff options
Diffstat (limited to 'libbuild2/cc')
| -rw-r--r-- | libbuild2/cc/compile-rule.cxx | 105 | ||||
| -rw-r--r-- | libbuild2/cc/compile-rule.hxx | 7 |
2 files changed, 76 insertions, 36 deletions
diff --git a/libbuild2/cc/compile-rule.cxx b/libbuild2/cc/compile-rule.cxx index 93f05f1..62391f3 100644 --- a/libbuild2/cc/compile-rule.cxx +++ b/libbuild2/cc/compile-rule.cxx @@ -1683,9 +1683,42 @@ namespace build2 // auto enter = [&trace, &m] (dir_path p, dir_path d, size_t prio) { - auto j (m.find (p)); + auto j (m.lower_bound (p)), e (m.end ()); - if (j != m.end ()) + if (j != e && j->first != p) + j = e; + + if (j == m.end ()) + { + if (verb >= 4) + trace << "new mapping for prefix '" << p << "'\n" + << " new mapping to " << d << " priority " << prio; + + m.emplace (move (p), prefix_value {move (d), prio}); + } + else if (p.empty ()) + { + // For prefixless we keep all the entries since for them we have + // an extra check (target must be explicitly spelled out in a + // buildfile). + // + if (verb >= 4) + trace << "additional mapping for prefix '" << p << "'\n" + << " new mapping to " << d << " priority " << prio; + + // Find the position where to insert according to the priority. + // For equal priorities we use the insertion order. + // + do + { + if (j->second.priority > prio) + break; + } + while (++j != e && j->first == p); + + m.emplace_hint (j, move (p), prefix_value {move (d), prio}); + } + else { prefix_value& v (j->second); @@ -1724,12 +1757,6 @@ namespace build2 v.priority = prio; } } - else - { - l6 ([&]{trace << "'" << p << "' -> " << d << " priority " - << prio;}); - m.emplace (move (p), prefix_value {move (d), prio}); - } }; #if 1 @@ -1737,11 +1764,7 @@ namespace build2 // // The prefixless part is fuzzy but seems to be doing the right // thing ignoring/overriding-wise, at least in cases where one of - // the competing -I paths is a subdirectory of another. But the - // proper solution will be to keep all the prefixless entries (by - // changing prefix_map to a multimap) since for them we have an - // extra check (target must be explicitly spelled out in a - // buildfile). + // the competing -I paths is a subdirectory of another. // for (size_t prio (0);; ++prio) { @@ -3068,7 +3091,11 @@ namespace build2 // possibly find an explicit target of this type. // if (!insert) + { + l6 ([&]{trace << "unknown header " << n << " extension '" + << e << "'";}); return nullptr; + } tts.push_back (&h::static_type); } @@ -3090,8 +3117,12 @@ namespace build2 // absolute path with a spelled-out extension to multiple targets. // for (const target_type* tt: tts) + { if ((r = t.ctx.targets.find (*tt, d, out, n, e, trace)) != nullptr) break; + else + l6 ([&]{trace << "no targe with target type " << tt->name;}); + } // Note: we can't do this because of the in-source builds where // there won't be explicit targets for non-generated headers. @@ -3195,32 +3226,40 @@ namespace build2 if (!pfx_map->empty ()) { dir_path d (f.directory ()); - auto i (pfx_map->find_sup (d)); + auto p (pfx_map->sup_range (d)); - if (i != pfx_map->end ()) + if (p.first != p.second) { - // Note: value in pfx_map is not necessarily canonical. + // Note that we can only have multiple entries for the + // prefixless mapping. // - dir_path pd (i->second.directory); - pd.canonicalize (); + dir_path pd; // Reuse. + for (auto i (p.first); i != p.second; ++i) + { + // Note: value in pfx_map is not necessarily canonical. + // + pd = i->second.directory; + pd.canonicalize (); - l4 ([&]{trace << "prefix '" << d << "' mapped to " << pd;}); + l4 ([&]{trace << "try prefix '" << d << "' mapped to " << pd;}); - // If this is a prefixless mapping, then only use it if we can - // resolve it to an existing target (i.e., it is explicitly - // spelled out in a buildfile). - // - // Note that at some point we will probably have a list of - // directories. - // - pt = find (pd / d, f.leaf (), !i->first.empty ()); - if (pt != nullptr) - { - f = pd / f; - l4 ([&]{trace << "mapped as auto-generated " << f;}); + // If this is a prefixless mapping, then only use it if we can + // resolve it to an existing target (i.e., it is explicitly + // spelled out in a buildfile). @@ Hm, I wonder why, it's not + // like we can generate any header without an explicit target. + // Maybe for diagnostics (i.e., we will actually try to build + // something there instead of just saying no mapping). + // + pt = find (pd / d, f.leaf (), !i->first.empty ()); + if (pt != nullptr) + { + f = pd / f; + l4 ([&]{trace << "mapped as auto-generated " << f;}); + break; + } + else + l4 ([&]{trace << "no explicit target in " << pd;}); } - else - l4 ([&]{trace << "no explicit target in " << pd;}); } else l4 ([&]{trace << "no prefix map entry for '" << d << "'";}); diff --git a/libbuild2/cc/compile-rule.hxx b/libbuild2/cc/compile-rule.hxx index daea600..f573968 100644 --- a/libbuild2/cc/compile-rule.hxx +++ b/libbuild2/cc/compile-rule.hxx @@ -100,8 +100,9 @@ namespace build2 // don't treat foobar as a sub-directory of foo. // // The priority is used to decide who should override whom. Lesser - // values are considered higher priority. See append_prefixes() for - // details. + // values are considered higher priority. Note that we can have multiple + // prefixless mapping (where priority is used to determine the order). + // See append_prefixes() for details. // // @@ The keys should be normalized. // @@ -110,7 +111,7 @@ namespace build2 dir_path directory; size_t priority; }; - using prefix_map = dir_path_map<prefix_value>; + using prefix_map = dir_path_multimap<prefix_value>; void append_prefixes (prefix_map&, const target&, const variable&) const; |