diff options
Diffstat (limited to 'libbuild2/c')
| -rw-r--r-- | libbuild2/c/init.cxx | 59 | ||||
| -rw-r--r-- | libbuild2/c/init.hxx | 16 |
2 files changed, 57 insertions, 18 deletions
diff --git a/libbuild2/c/init.cxx b/libbuild2/c/init.cxx index ebf0631..cb0469c 100644 --- a/libbuild2/c/init.cxx +++ b/libbuild2/c/init.cxx @@ -479,11 +479,11 @@ namespace build2 bool as_cpp_init (scope& rs, - scope& bs, - const location& loc, - bool, - bool, - module_init_extra&) + scope& bs, + const location& loc, + bool, + bool, + module_init_extra&) { tracer trace ("c::as_cpp_init"); l5 ([&]{trace << "for " << bs;}); @@ -513,17 +513,54 @@ namespace build2 return true; } + bool + predefs_init (scope& rs, + scope& bs, + const location& loc, + bool, + bool, + module_init_extra&) + { + tracer trace ("c::predefs_init"); + l5 ([&]{trace << "for " << bs;}); + + // We only support root loading (which means there can only be one). + // + if (rs != bs) + fail (loc) << "c.predefs module must be loaded in project root"; + + module* mod (rs.find_module<module> ("c")); + + if (mod == nullptr) + fail (loc) << "c.predefs module must be loaded after c module"; + + // Register the c.predefs rule. + // + // Why invent a separate module instead of just always registering it in + // the c module? The reason is performance: this rule will be called for + // every C header. + // + cc::predefs_rule& r (*mod); + + rs.insert_rule<h> (perform_update_id, r.rule_name, r); + rs.insert_rule<h> (perform_clean_id, r.rule_name, r); + rs.insert_rule<h> (configure_update_id, r.rule_name, r); + + return true; + } + static const module_functions mod_functions[] = { // NOTE: don't forget to also update the documentation in init.hxx if // changing anything here. - {"c.guess", nullptr, guess_init}, - {"c.config", nullptr, config_init}, - {"c.objc", nullptr, objc_init}, - {"c.as-cpp", nullptr, as_cpp_init}, - {"c", nullptr, init}, - {nullptr, nullptr, nullptr} + {"c.guess", nullptr, guess_init}, + {"c.config", nullptr, config_init}, + {"c.objc", nullptr, objc_init}, + {"c.as-cpp", nullptr, as_cpp_init}, + {"c.predefs", nullptr, predefs_init}, + {"c", nullptr, init}, + {nullptr, nullptr, nullptr} }; const module_functions* diff --git a/libbuild2/c/init.hxx b/libbuild2/c/init.hxx index c3126ea..713a78a 100644 --- a/libbuild2/c/init.hxx +++ b/libbuild2/c/init.hxx @@ -19,13 +19,15 @@ namespace build2 // // Submodules: // - // `c.guess` -- registers and sets some variables. - // `c.config` -- loads c.guess and sets more variables. - // `c` -- loads c.config and registers target types and rules. - // `c.objc` -- registers m{} target type and enables Objective-C - // compilation. Must be loaded after c. - // `c.as-cpp` -- registers S{} target type and enables Assembler with - // C preprocessor compilation. Must be loaded after c. + // `c.guess` -- registers and sets some variables. + // `c.config` -- loads c.guess and sets more variables. + // `c` -- loads c.config and registers target types and rules. + // `c.objc` -- registers m{} target type and enables Objective-C + // compilation. Must be loaded after c. + // `c.as-cpp` -- registers S{} target type and enables Assembler with + // C preprocessor compilation. Must be loaded after c. + // `c.predefs` -- registers rule for generating a C header with + // predefined compiler macros. Must be loaded after c. // extern "C" LIBBUILD2_C_SYMEXPORT const module_functions* build2_c_load (); |