diff options
Diffstat (limited to 'libbuild2/config/operation.cxx')
| -rw-r--r-- | libbuild2/config/operation.cxx | 140 |
1 files changed, 110 insertions, 30 deletions
diff --git a/libbuild2/config/operation.cxx b/libbuild2/config/operation.cxx index c5e8004..760f998 100644 --- a/libbuild2/config/operation.cxx +++ b/libbuild2/config/operation.cxx @@ -157,24 +157,19 @@ namespace build2 // If inherit is false, then don't rely on inheritance from outer scopes. // + // @@ We are modifying the module (marking additional variables as saved) + // and this function can be called from a buildfile (probably only + // during serial execution but still). + // void save_config (const scope& rs, ostream& os, const path_name& on, bool inherit, + module& mod, const project_set& projects) { context& ctx (rs.ctx); - // @@ We are modifying the module (marking additional variables as - // saved) and this function can be called from a buildfile (probably - // only during serial execution but still). - // - module* mod (rs.find_module<module> (module::name)); - - if (mod == nullptr) - fail (on) << "no configuration information available during this " - << "meta-operation"; - names storage; auto info_value = [&storage] (diag_record& dr, const value& v) mutable @@ -234,18 +229,18 @@ namespace build2 var->name.compare (0, 14, "config.config.") == 0) continue; - if (mod->find_variable (*var)) // Saved or unsaved. + if (mod.find_variable (*var)) // Saved or unsaved. continue; const value& v (p.first->second); pair<bool, bool> r (save_config_variable (*var, - mod->persist, + mod.persist, false /* inherited */, true /* unused */)); if (r.first) // save { - mod->save_variable (*var, 0); + mod.save_variable (*var, 0); if (r.second) // warn { @@ -281,7 +276,7 @@ namespace build2 // Save config variables. // - for (auto p: mod->saved_modules.order) + for (auto p: mod.saved_modules.order) { const string& sname (p.second->first); const saved_variables& svars (p.second->second); @@ -542,6 +537,7 @@ namespace build2 save_config (const scope& rs, const path& f, bool inherit, + module& mod, const project_set& projects) { path_name fn (f); @@ -555,7 +551,8 @@ namespace build2 try { ofdstream ofs; - save_config (rs, open_file_or_stdout (fn, ofs), fn, inherit, projects); + save_config ( + rs, open_file_or_stdout (fn, ofs), fn, inherit, mod, projects); ofs.close (); } catch (const io_error& e) @@ -564,10 +561,81 @@ namespace build2 } } + // Update config.config.environment value for a hermetic configuration. + // + static void + save_environment (scope& rs, module& mod) + { + // Here we have two parts: (1) get the list of environment variables we + // need to save and (2) save their values in config.config.environment. + // + // The saved_environment list should by now contain all the project- + // specific environment variables. To that we add builtin defaults and + // then filter the result against config.config.hermetic.environment + // inclusions/exclusions. + // + auto& vars (mod.saved_environment); + + vars.insert ("PATH"); + +#if defined(_WIN32) +#elif defined(__APPLE__) + vars.insert ("DYLD_LIBRARY_PATH"); +#else // Linux, FreeBSD, NetBSD, OpenBSD + vars.insert ("LD_LIBRARY_PATH"); +#endif + + for (const pair<string, optional<bool>>& p: + cast_empty<hermetic_environment> ( + rs["config.config.hermetic.environment"])) + { + if (!p.second || *p.second) + vars.insert (p.first); + else + vars.erase (p.first); + } + + // Get the values. + // + strings vals; + { + // Set the project environment before querying the values. Note that + // the logic in init() makes sure that this is all we need to do to + // handle reload (in which case we should still be using + // config.config.environment from amalgamation, if any). + // + auto_project_env penv (rs); + + for (const string& var: vars) + { + if (optional<string> val = getenv (var)) + { + vals.push_back (var + '=' + *val); + } + else + vals.push_back (var); // Unset. + } + } + + value& v (rs.assign (*rs.ctx.var_pool.find ("config.config.environment"))); + + // Note that setting new config.config.environment value invalidates the + // project's environment (scope::root_extra::environment) which could be + // queried in the post-configuration hook. We could re-initialize it but + // the c.c.e value from amalgamation could be referenced by subprojects. + // So instead it seems easier to just save the old value in the module. + // + if (v) + mod.old_environment = move (v.as<strings> ()); + + v = move (vals); + } + static void configure_project (action a, - const scope& rs, + scope& rs, const variable* c_s, // config.config.save + module& mod, project_set& projects) { tracer trace ("configure_project"); @@ -597,6 +665,12 @@ namespace build2 { l5 ([&]{trace << "completely configuring " << out_root;}); + // Save the environment if this configuration is hermetic (see init() + // for the other half of this logic). + // + if (cast_false<bool> (rs["config.config.hermetic"])) + save_environment (rs, mod); + // Save src-root.build unless out_root is the same as src. // if (c_s == nullptr && out_root != src_root) @@ -621,7 +695,7 @@ namespace build2 // may end up leaving it in partially configured state. // if (c_s == nullptr) - save_config (rs, config_file (rs), true /* inherit */, projects); + save_config (rs, config_file (rs), true /* inherit */, mod, projects); else { lookup l (rs[*c_s]); @@ -634,7 +708,8 @@ namespace build2 // still want to support this mode somehow in the future (it seems // like an override of config.config.persist should do the trick). // - save_config (rs, cast<path> (l), false /* inherit */, projects); + save_config ( + rs, cast<path> (l), false /* inherit */, mod, projects); } } } @@ -645,11 +720,8 @@ namespace build2 if (c_s == nullptr) { - if (module* m = rs.find_module<module> (module::name)) - { - for (auto hook: m->configure_post_) - hook (a, rs); - } + for (auto hook: mod.configure_post_) + hook (a, rs); } // Configure subprojects that have been loaded. @@ -660,15 +732,19 @@ namespace build2 { const dir_path& pd (p.second); dir_path out_nroot (out_root / pd); - const scope& nrs (ctx.scopes.find_out (out_nroot)); + scope& nrs (ctx.scopes.find_out (out_nroot).rw ()); - // @@ Strictly speaking we need to check whether the config module - // was loaded for this subproject. + // Skip this subproject if it is not loaded or doesn't use the + // config module. // - if (nrs.out_path () != out_nroot) // This subproject not loaded. - continue; + if (nrs.out_path () == out_nroot) + { + if (module* m = rs.find_module<module> (module::name)) + { + configure_project (a, nrs, c_s, *m, projects); + } + } - configure_project (a, nrs, c_s, projects); } } } @@ -874,7 +950,11 @@ namespace build2 } } - configure_project (a, *rs, c_s, projects); + configure_project (a, + rs->rw (), + c_s, + *rs->find_module<module> (module::name), + projects); } } } |