// file : libbuild2/bin/rule.hxx -*- C++ -*- // license : MIT; see accompanying LICENSE file #ifndef LIBBUILD2_BIN_RULE_HXX #define LIBBUILD2_BIN_RULE_HXX #include #include #include #include namespace build2 { namespace bin { // "Fail rule" for obj{} and [h]bmi{} that issues diagnostics if someone // tries to build these groups directly. // class obj_rule: public simple_rule { public: obj_rule () {} virtual bool match (action, target&) const override; virtual recipe apply (action, target&) const override; }; // If metadata is false, the this is a "fail rule" for libul{} that issues // diagnostics if someone tries to build this group directly. // // If metadata is true, then this rule only matches with the explicit // `bin.metadata` hint. In this case it picks, matches, and unmatches (if // possible) a member for the purpose of making its metadata (for example, // library's poptions, if it's one of the cc libraries) available. // // The underlying idea here is that someone else (e.g., cc::link_rule) // makes a more informed choice and we piggy back on that decision, // falling back to making our own based on bin.lib and bin.exe.lib. Note // that for update this rule always returns target_state::unchanged. // class libul_rule: public rule { public: explicit libul_rule (bool md): metadata_ (md) {} virtual bool match (action, target&, const string&, match_extra&) const override; virtual recipe apply (action, target&, match_extra&) const override; private: bool metadata_; }; // Pass-through to group members rule, similar to alias. // class LIBBUILD2_BIN_SYMEXPORT lib_rule: public simple_rule { public: lib_rule () {} virtual bool match (action, target&) const override; virtual recipe apply (action, target&) const override; static target_state perform (action, const target&); }; } } #endif // LIBBUILD2_BIN_RULE_HXX