QtQml build failure when python is not available

if exist C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.dll.embed.manifest copy /Y C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.dll.embed.manifest C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.dll_manifest.bak
link /NOLOGO /DYNAMICBASE /NXCOMPAT /BASE:0x66000000 /DEBUG /DLL /VERSION:5.20 /MANIFEST /MANIFESTFILE:C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.dll.embed.manifest /OUT:C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.dll @C:\Users\AKREBS~1.WTC\AppData\Local\Temp\nm3D5C.tmp
Creating library C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.lib and object C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.exp

YarrInterpreter.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::newlineCreate(void)" (?newlineCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::newlineCharacterClass(voi
d)" (?newlineCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

YarrJIT.obj : error LNK2001: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::newlineCreate(void)" (?newlineCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ)

YarrPattern.obj : error LNK2001: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::newlineCreate(void)" (?newlineCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ)

YarrInterpreter.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::wordcharCreate(void)" (?wordcharCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::wordcharCharacterClass(
void)" (?wordcharCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

YarrJIT.obj : error LNK2001: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::wordcharCreate(void)" (?wordcharCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ)

YarrPattern.obj : error LNK2001: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::wordcharCreate(void)" (?wordcharCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ)

YarrPattern.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::digitsCreate(void)" (?digitsCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::digitsCharacterClass(void)" (?d
igitsCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

YarrPattern.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::spacesCreate(void)" (?spacesCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::spacesCharacterClass(void)" (?spacesCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

YarrPattern.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::nondigitsCreate(void)" (?nondigitsCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::nondigitsCharacterClass(v
oid)" (?nondigitsCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

YarrPattern.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::nonspacesCreate(void)" (?nonspacesCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::nonspacesCharacterClass(v
oid)" (?nonspacesCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

YarrPattern.obj : error LNK2019: unresolved external symbol "struct JSC::Yarr::CharacterClass * __cdecl JSC::Yarr::nonwordcharCreate(void)" (?nonwordcharCreate@Yarr@JSC@@YAPAUCharacterClass@12@XZ) referenced in function "public: struct JSC::Yarr::CharacterClass * __thiscall JSC::Yarr::YarrPattern::nonwordcharCharacterClass(void)" (?nonwordcharCharacterClass@YarrPattern@Yarr@JSC@@QAEPAUCharacterClass@23@XZ)

C:\Users\akrebsbach.WTC-VAN-NT\Desktop\Work\QtSupport\QTCode\qt5\qtbase\lib\Qt5Qmld.dll : fatal error LNK1120: 7 unresolved externals
NMAKE : fatal error U1077: '"c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\link.EXE"' : return code '0x460'
Stop.
NMAKE : fatal error U1077: '"c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.
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