While compiling Qt5.9 with VC++2013 - Windows 10, getting error C2440: 'default argument': cannot convert from 'const wchar_t [1]' to 'BSTR'

Question

I am building Qt5.9 with VC++2013, Windows 10. I am getting the error as below:

 C2440: 'default argument': cannot convert from 'const wchar_t [1]' to 'BSTR.

I have read this question error C2440: 'default argument': cannot convert from 'const wchar_t [1]' to 'BSTR' but seem not my problem because I am compiling Qt5.9, not qt app project.

I found an article about this issue but it is about compiling Qt5.6 ( http://wangjie.rocks/2015/12/28/compile-qt/ ). This is a chinese site, I need to translate using chrome. There is no file qtbase\\mkspecs\\common\\msvc-base.conf in Qt5.9 but I found a similar config file qtbase\\mkspecs\\common\\msvc-version.conf . I did the same but it doesn't work.

Answer 1

I found solution.

It pops up error while compile qtsystems\\src\\systeminfo\\systeminfo.pro so I added bellow config to that systeminfo.pro . It works.

win32: QMAKE_CXXFLAGS_RELEASE -= -Zc:strictStrings
win32: QMAKE_CFLAGS_RELEASE -= -Zc:strictStrings
win32: QMAKE_CFLAGS -= -Zc:strictStrings
win32: QMAKE_CXXFLAGS -= -Zc:strictStrings