qmake does not compile with MinGW 5.3

g++ -c -o qmakebuiltins.o -std=c++11 -DUNICODE -ffunction-sections -g  -IE:\Qt\5.7\Src\qtbase/qmake -IE:\Qt\5.7\Src\qtbase/qmake/library -IE:\Qt\5.7\Src\qtbase/qmake/generators -IE:\Qt\5.7\Src\qtbase/qmake/generators/unix -IE:\Qt\5.7\Src\qtbase/qmake/generators/win32 -IE:\Qt\5.7\Src\qtbase/qmake/generators/mac -IE:\Qt\5.7\Src\qtbase/qmake/generators/integrity -IE:\Qt\5.7\Src\qtbase\include -IE:\Qt\5.7\Src\qtbase\include/QtCore -IE:\Qt\5.7\Src\qtbase\include/QtCore/5.7.0 -IE:\Qt\5.7\Src\qtbase\include/QtCore/5.7.0/QtCore -I../src/corelib/global -DHAVE_QCONFIG_CPP -IE:\Qt\5.7\Src\qtbase\mkspecs\win32-g++ -IE:\Qt\5.7\Src\qtbase/tools/shared -DQT_VERSION_STR=\"5.7.0\" -DQT_VERSION_MAJOR=5 -DQT_VERSION_MINOR=7 -DQT_VERSION_PATCH=0 -DQT_BUILD_QMAKE -DQT_BOOTSTRAPPED -DPROEVALUATOR_FULL -DQT_NO_TEXTCODEC -DQT_NO_UNICODETABLES -DQT_NO_COMPONENT -DQT_NO_COMPRESS -DQT_NO_THREAD -DQT_NO_QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_NO_FOREACH -DQT_CRYPTOGRAPHICHASH_ONLY_SHA1 -DQT_JSON_READONLY -DQT_NO_STANDARDPATHS E:\Qt\5.7\Src\qtbase/qmake/library/qmakebuiltins.cpp
E:\Qt\5.7\Src\qtbase/qmake/library/qmakebuiltins.cpp: In member function 'QByteArray QMakeEvaluator::getCommandOutput(const QString&) const':
E:\Qt\5.7\Src\qtbase/qmake/library/qmakebuiltins.cpp:419:94: error: '_popen' was not declared in this scope
                                + QLatin1String(" && ") + args).toLocal8Bit().constData(), "r")) {
                                                                                              ^
E:\Qt\5.7\Src\qtbase/qmake/library/qmakebuiltins.cpp:427:23: error: '_pclose' was not declared in this scope
         QT_PCLOSE(proc);
                       ^
Makefile:204: recipe for target 'qmakebuiltins.o' failed