std::string Environment::system_prefix() {
if(!system_prefix_.empty()) return system_prefix_;
// 1. Check if our configure prefix is overridden by the environment.
const char* path = getenv("RBX_PREFIX_PATH");
if(path && verify_paths(path)) {
system_prefix_ = path;
return path;
}
// 2. Check if our configure prefix is valid.
path = RBX_PREFIX_PATH;
if(verify_paths(path)) {
system_prefix_ = path;
return path;
}
// 3. Check if we can derive paths from the executable name.
// TODO: For Windows, substitute '/' for '\\'
std::string name = executable_name();
size_t exe = name.rfind('/');
if(exe != std::string::npos) {
std::string prefix = name.substr(0, exe - strlen(RBX_BIN_PATH));
if(verify_paths(prefix)) {
system_prefix_ = prefix;
return prefix;
}
}
throw MissingRuntime("FATAL ERROR: unable to find Rubinius runtime directories.");
}
std::string Environment::system_prefix() {
if(!system_prefix_.empty()) return system_prefix_;
std::string failure_reason;
// 1. Check if our configure prefix is overridden by the environment.
const char* path = getenv("RBX_PREFIX_PATH");
if(path && verify_paths(path, failure_reason)) {
system_prefix_ = path;
return path;
}
// 2. Check if our configure prefix is valid.
path = RBX_PREFIX_PATH;
if(verify_paths(path, failure_reason)) {
system_prefix_ = path;
return path;
}
// 3. Check if we can derive paths from the executable name.
// TODO: For Windows, substitute '/' for '\\'
std::string name = executable_name();
size_t exe = name.rfind('/');
if(exe != std::string::npos) {
std::string prefix = name.substr(0, exe - strlen(RBX_BIN_PATH));
if(verify_paths(prefix, failure_reason)) {
system_prefix_ = prefix;
return prefix;
}
}
std::string error("Unable to find Rubinius runtime directories: ");
error.append(failure_reason);
missing_core(error.c_str());
}
