// file : build/target.txx -*- C++ -*- // copyright : Copyright (c) 2014-2015 Code Synthesis Ltd // license : MIT; see accompanying LICENSE file #include <build/scope> #include <build/context> // extension_pool #include <build/diagnostics> #include <build/prerequisite> namespace build { template <const char* ext> const std::string& target_extension_fix (const target_key&, scope&) { return extension_pool.find (ext); } template <const char* var> const std::string& target_extension_var (const target_key& tk, scope& s) { auto l (s[var]); if (!l) { diag_record dr; dr << fail << "no default extension in variable " << var << info << "required to derive file name for "; // This is a bit hacky: we may be dealing with a target (see // file::derive_path()) or prerequsite (see search_existing_file()). // So we are going to check if dir is absolute. If it is, then // we assume this is a target, otherwise -- prerequsite. // if (tk.dir->absolute ()) dr << "target " << tk; else { const std::string* proj (nullptr); // Used for local prerequisites. dr << "prerequisite " << prerequisite_key {&proj, tk, &s}; } } return extension_pool.find (as<std::string> (*l)); } }