// file : libbuild2/cc/compile-rule.hxx -*- C++ -*- // license : MIT; see accompanying LICENSE file #ifndef LIBBUILD2_CC_COMPILE_RULE_HXX #define LIBBUILD2_CC_COMPILE_RULE_HXX #include <libbuild2/types.hxx> #include <libbuild2/utility.hxx> #include <libbuild2/rule.hxx> #include <libbuild2/filesystem.hxx> // auto_rmfile #include <libbuild2/cc/types.hxx> #include <libbuild2/cc/common.hxx> #include <libbuild2/cc/export.hxx> namespace build2 { class depdb; namespace cc { // The order is arranged so that their integral values indicate whether // one is a "stronger" than another. // enum class preprocessed: uint8_t {none, includes, modules, all}; // Positions of the re-exported bmi{}s. See search_modules() for // details. // struct module_positions { size_t start; // First imported bmi*{}, 0 if none. size_t exported; // First re-exported bmi*{}, 0 if none. size_t copied; // First copied-over bmi*{}, 0 if none. }; class LIBBUILD2_CC_SYMEXPORT compile_rule: public rule, virtual common { public: compile_rule (data&&); virtual bool match (action, target&, const string&) const override; virtual recipe apply (action, target&) const override; target_state perform_update (action, const target&) const; target_state perform_clean (action, const target&) const; private: struct match_data; using environment = small_vector<const char*, 2>; template <typename T> void append_sys_inc_options (T&) const; template <typename T> void append_lib_options (const scope&, T&, action, const target&, linfo) const; // Mapping of include prefixes (e.g., foo in <foo/bar>) for auto- // generated headers to directories where they will be generated. // // We are using a prefix map of directories (dir_path_map) instead of // just a map in order to also cover sub-paths (e.g., <foo/more/bar> if // we continue with the example). Specifically, we need to make sure we // 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. // // @@ The keys should be normalized. // struct prefix_value { dir_path directory; size_t priority; }; using prefix_map = dir_path_map<prefix_value>; void append_prefixes (prefix_map&, const target&, const variable&) const; void append_lib_prefixes (const scope&, prefix_map&, action, target&, linfo) const; prefix_map build_prefix_map (const scope&, action, target&, linfo) const; small_vector<const target_type*, 2> map_extension (const scope&, const string&, const string&) const; // Src-to-out re-mapping. See extract_headers() for details. // using srcout_map = path_map<dir_path>; struct module_mapper_state; void gcc_module_mapper (module_mapper_state&, action, const scope&, file&, linfo, ifdstream&, ofdstream&, depdb&, bool&, bool&, optional<prefix_map>&, srcout_map&) const; pair<const file*, bool> enter_header (action, const scope&, file&, linfo, path&&, bool, optional<prefix_map>&, srcout_map&) const; optional<bool> inject_header (action, file&, const file&, timestamp, bool) const; pair<auto_rmfile, bool> extract_headers (action, const scope&, file&, linfo, const file&, match_data&, depdb&, bool&, timestamp) const; pair<unit, string> parse_unit (action, file&, linfo, const file&, auto_rmfile&, const match_data&, const path&) const; void extract_modules (action, const scope&, file&, linfo, const compile_target_types&, const file&, match_data&, module_info&&, depdb&, bool&) const; module_positions search_modules (action, const scope&, file&, linfo, const target_type&, const file&, module_imports&, sha256&) const; dir_path find_modules_sidebuild (const scope&) const; const file& make_module_sidebuild (action, const scope&, const target&, const target&, const string&) const; const file& make_header_sidebuild (action, const scope&, linfo, const file&) const; void append_header_options (environment&, cstrings&, small_vector<string, 2>&, action, const file&, const match_data&, const path&) const; void append_module_options (environment&, cstrings&, small_vector<string, 2>&, action, const file&, const match_data&, const path&) const; // Compiler-specific language selection option. Return the number of // options (arguments, really) appended. // size_t append_lang_options (cstrings&, const match_data&) const; void append_symexport_options (cstrings&, const target&) const; private: const string rule_id; }; } } #endif // LIBBUILD2_CC_COMPILE_RULE_HXX