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// file : build/bin/rule.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <build/bin/rule>
#include <build/scope>
#include <build/target>
#include <build/algorithm>
#include <build/diagnostics>
#include <build/bin/target>
using namespace std;
namespace build
{
namespace bin
{
// obj
//
match_result obj_rule::
match (action a, target& t, const std::string&) const
{
fail << diag_doing (a, t) << " target group" <<
info << "explicitly select either obja{} or objso{} member";
return nullptr;
}
recipe obj_rule::
apply (action, target&, const match_result&) const {return empty_recipe;}
// lib
//
// The whole logic is pretty much as if we had our two group
// members as our prerequisites.
//
match_result lib_rule::
match (action a, target& xt, const std::string&) const
{
lib& t (static_cast<lib&> (xt));
// @@ We have to re-query it on each match_only()!
// Get the library type to build. If not set for a target, this
// should be configured at the project scope by init_lib().
//
const string& type (t["bin.lib"].as<const string&> ());
bool ar (type == "static" || type == "both");
bool so (type == "shared" || type == "both");
if (!ar && !so)
fail << "unknown library type: " << type <<
info << "'static', 'shared', or 'both' expected";
// Search and pre-match the members. The pre-match here is part
// of the "library meta-information protocol" that could be used
// by the module that actually builds the members. The idea is
// that pre-matching members may populate our prerequisite_targets
// with prerequisite libraries from which others can extract the
// meta-information about the library, such as the options to use
// when linking it, etc.
//
if (ar)
{
if (t.a == nullptr)
t.a = &search<liba> (t.dir, t.name, t.ext, nullptr);
match_only (a, *t.a);
}
if (so)
{
if (t.so == nullptr)
t.so = &search<libso> (t.dir, t.name, t.ext, nullptr);
match_only (a, *t.so);
}
return match_result (t, &type);
}
recipe lib_rule::
apply (action a, target& xt, const match_result& mr) const
{
lib& t (static_cast<lib&> (xt));
const string& type (*static_cast<const string*> (mr.cpvalue));
bool ar (type == "static" || type == "both");
bool so (type == "shared" || type == "both");
// Now we do full match.
//
if (ar)
build::match (a, *t.a);
if (so)
build::match (a, *t.so);
return &perform;
}
target_state lib_rule::
perform (action a, target& xt)
{
lib& t (static_cast<lib&> (xt));
//@@ Not cool we have to do this again. Looks like we need
// some kind of a cache vs resolved pointer, like in
// prerequisite vs prerequisite_target.
//
//
const string& type (t["bin.lib"].as<const string&> ());
bool ar (type == "static" || type == "both");
bool so (type == "shared" || type == "both");
target* m1 (ar ? t.a : nullptr);
target* m2 (so ? t.so : nullptr);
if (current_mode == execution_mode::last)
swap (m1, m2);
target_state r (target_state::unchanged);
if (m1 != nullptr)
r |= execute (a, *m1);
if (m2 != nullptr)
r |= execute (a, *m2);
return r;
}
}
}
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