Need help to build WebEngine module

[flyingdragon]

Have trouble to build WebEngine module. Need to compile the 5.7.0 branch with the https://bugreports.qt.io/browse/QTBUG-53411 patch applied. We have memory leak problem with QT 5.6.0 when we use video tag to play WebM format video.

We used the following batch file to build the module but failed with many errors:
set MSVC_PATH=C:\Program Files (x86)\Microsoft Visual Studio 12.0
set QMAKESPEC=win32-msvc2013
set QT5_SRC_PATH=D:\qt-everywhere-opensource-src-5.7.0
set QT5_INSTALL_PATH=D:\Qt\Qt5.7.0-win32-vs2013-web
set PERL_PATH=C:\Perl64
set PYTHON_PATH=C:\Python35
set RUBY_PATH=C:\Ruby23-x64
set WIN_FLEX_BISION_PATH=%QT5_SRC_PATH%\gnuwin32\bin
set ICU_PATH=C:\icu
set OPENSSL_PATH=C:\usr\local\ssl
set PATH=%QT5_SRC_PATH%\qtbase\bin;%QT5_SRC_PATH%\qtbase\lib;%QT5_SRC_PATH%\gnuwin32\bin;%RUBY_PATH%\bin;%PATH%
set PATH=%PATH%;%PERL_PATH%\bin;%PYTHON_PATH%
set LIB=%LIB%;%ICU_PATH%\lib;%OPENSSL_PATH%\lib
set INCLUDE=%INCLUDE%;%ICU_PATH%\include;%OPENSSL_PATH%\include
set PATH=%PATH%;%ICU_PATH%\bin;%OPENSSL_PATH%\bin;%ICU_PATH%\lib
call "%MSVC_PATH%\VC\vcvarsall.bat" x86
call %QT5_SRC_PATH%\configure -prefix %QT5_INSTALL_PATH% -debug-and-release -opensource -confirm-license -platform win32-msvc2013 -target xp -opengl dynamic -mp -icu -openssl -nomake examples -nomake tests -no-directwrite
nmake
nmake install
xcopy /y /k "%ICU_PATH%\bin\icudt56.dll" "%QT5_INSTALL_PATH%\bin"
xcopy /y /k "%ICU_PATH%\bin\icuin56.dll" "%QT5_INSTALL_PATH%\bin"
xcopy /y /k "%ICU_PATH%\bin\icuuc56.dll" "%QT5_INSTALL_PATH%\bin"
xcopy /y /k "%ICU_PATH%\lib\icudt.lib" "%QT5_INSTALL_PATH%\lib"
xcopy /y /k "%ICU_PATH%\lib\icuin.lib" "%QT5_INSTALL_PATH%\lib"
xcopy /y /k "%ICU_PATH%\lib\icuuc.lib" "%QT5_INSTALL_PATH%\lib"
xcopy /y /k "%OPENSSL_PATH%\bin\libeay32.dll" "%QT5_INSTALL_PATH%\bin"
xcopy /y /k "%OPENSSL_PATH%\bin\ssleay32.dll" "%QT5_INSTALL_PATH%\bin"
xcopy /y /k "%OPENSSL_PATH%\lib\libeay32.lib" "%QT5_INSTALL_PATH%\lib"
xcopy /y /k "%OPENSSL_PATH%\lib\ssleay32.lib" "%QT5_INSTALL_PATH%\lib"
pause

Please help. Thank you for the help.