diff options
Diffstat (limited to 'libbuild2/config/init.cxx')
| -rw-r--r-- | libbuild2/config/init.cxx | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/libbuild2/config/init.cxx b/libbuild2/config/init.cxx index 774ffb8..73c9d37 100644 --- a/libbuild2/config/init.cxx +++ b/libbuild2/config/init.cxx @@ -243,12 +243,23 @@ namespace build2 auto& c_v (vp.insert<uint64_t> ("config.version", false /*ovr*/, v_p)); auto& c_l (vp.insert<paths> ("config.config.load", true /* ovr */)); + // Omit loading the configuration from the config.build file (it is + // still loaded from config.config.load if specified). Similar to + // config.config.load, only values specified on this project's root + // scope and global scope are considered. + // + // Note that this variable is not saved in config.build and is expected + // to always be specified as a command line override. + // + auto& c_u (vp.insert<bool> ("config.config.unload", true /*ovr*/)); + // Configuration variables to disfigure. // // The exact semantics is to ignore these variables when loading // config.build (and any files specified in config.config.load), letting // them to take on the default values (more precisely, the current - // implementation undefined them after loading config.build). + // implementation undefined them after loading config.build). See also + // config.config.unload. // // Note that this variable is not saved in config.build and is expected // to always be specified as a command line override. @@ -352,9 +363,10 @@ namespace build2 save_null_omitted | save_empty_omitted | save_base, &save_environment); - // Load config.build if one exists followed by extra files specified in - // config.config.load (we don't need to worry about disfigure since we - // will never be init'ed). + // Load config.build if one exists (and unless config.config.unload is + // specified) followed by extra files specified in config.config.load + // (we don't need to worry about disfigure since we will never be + // init'ed). // auto load_config = [&rs, &c_v] (istream& is, const path_name& in, @@ -403,11 +415,26 @@ namespace build2 load_config (open_file_or_stdin (fn, ifs), fn, l); }; + // Load config.build unless requested not to. + // { - path f (config_file (rs)); + // The same semantics as in config.config.load below. + // + bool u; + { + lookup l (rs[c_u]); + u = (l && + (l.belongs (rs) || l.belongs (ctx.global_scope)) && + cast_false<bool> (l)); + } - if (exists (f)) - load_config_file (f, l); + if (!u) + { + path f (config_file (rs)); + + if (exists (f)) + load_config_file (f, l); + } } if (lookup l = rs[c_l]) |