+ if(tag=="CC")
+ {
+ input_suffixes.push_back(".c");
+ aux_suffixes.push_back(".h");
+ }
+ else if(tag=="CXX")
+ {
+ input_suffixes.push_back(".cpp");
+ input_suffixes.push_back(".cc");
+ aux_suffixes.push_back(".hpp");
+ }
+ else if(tag=="OBJC")
+ {
+ input_suffixes.push_back(".m");
+ build_info.libs.push_back("objc");
+ }
+ else
+ throw invalid_argument("GnuCompiler::GnuCompiler");
+
+ set_command((tag=="CXX" ? "g++" : "gcc"), true);
+
+ if(!sysroot.empty())
+ {
+ build_info.sysroot = sysroot;
+ system_path.push_back(sysroot/"usr/include");
+ }
+ else if(architecture->is_native())