bool BuildDirManager::hasConfigChanged()
{
checkConfiguration();
const QByteArray GENERATOR_KEY = "CMAKE_GENERATOR";
const QByteArray EXTRA_GENERATOR_KEY = "CMAKE_EXTRA_GENERATOR";
const QByteArray CMAKE_COMMAND_KEY = "CMAKE_COMMAND";
const QByteArray CMAKE_C_COMPILER_KEY = "CMAKE_C_COMPILER";
const QByteArray CMAKE_CXX_COMPILER_KEY = "CMAKE_CXX_COMPILER";
const QByteArrayList criticalKeys
= {GENERATOR_KEY, CMAKE_COMMAND_KEY, CMAKE_C_COMPILER_KEY, CMAKE_CXX_COMPILER_KEY};
const CMakeConfig currentConfig = takeCMakeConfiguration();
const CMakeTool *tool = m_parameters.cmakeTool();
QTC_ASSERT(tool, return false); // No cmake... we should not have ended up here in the first place
const QString extraKitGenerator = m_parameters.extraGenerator;
const QString mainKitGenerator = m_parameters.generator;
CMakeConfig targetConfig = m_parameters.configuration;
targetConfig.append(CMakeConfigItem(GENERATOR_KEY, CMakeConfigItem::INTERNAL,
QByteArray(), mainKitGenerator.toUtf8()));
if (!extraKitGenerator.isEmpty())
targetConfig.append(CMakeConfigItem(EXTRA_GENERATOR_KEY, CMakeConfigItem::INTERNAL,
QByteArray(), extraKitGenerator.toUtf8()));
targetConfig.append(CMakeConfigItem(CMAKE_COMMAND_KEY, CMakeConfigItem::INTERNAL,
QByteArray(), tool->cmakeExecutable().toUserOutput().toUtf8()));
Utils::sort(targetConfig, CMakeConfigItem::sortOperator());
bool mustReparse = false;
auto ccit = currentConfig.constBegin();
auto kcit = targetConfig.constBegin();
while (ccit != currentConfig.constEnd() && kcit != targetConfig.constEnd()) {
if (ccit->key == kcit->key) {
if (ccit->value != kcit->value) {
if (criticalKeys.contains(kcit->key)) {
clearCache();
return false; // no need to trigger a new reader, clearCache will do that
}
mustReparse = true;
}
++ccit;
++kcit;
} else {
if (ccit->key < kcit->key) {
++ccit;
} else {
++kcit;
mustReparse = true;
}
}
}
// If we have keys that do not exist yet, then reparse.
//
// The critical keys *must* be set in cmake configuration, so those were already
// handled above.
return mustReparse || kcit != targetConfig.constEnd();
}
static CMakeConfig removeDuplicates(const CMakeConfig &config)
{
CMakeConfig result;
// Remove duplicates (last value wins):
QSet<QByteArray> knownKeys;
for (int i = config.count() - 1; i >= 0; --i) {
const CMakeConfigItem &item = config.at(i);
if (knownKeys.contains(item.key))
continue;
result.append(item);
knownKeys.insert(item.key);
}
Utils::sort(result, CMakeConfigItem::sortOperator());
return result;
}