Wrong links in Makefile

We figured out one bug in qmake.exe while "Enable Quick Compiler"
feature is turned on.
The issue is qmake.exe generates Makefile with broken links (see below):
.qtquickcompiler/qml_appstyle_qml.cpp: ../../../L4UI/src/gui/qml/appstyle.qml
{color}
C:/Qt/5.5/mingw492_32/bin/qtquickcompiler.exe
'c:\dev\qt551_install_static\bin\qtquickcompiler.exe'
--resource=/C/L4Development/L4Source/L4UI/src/gui/qml/qml.qrc
../../../L4UI/src/gui/qml/appstyle.qml .qtquickcompiler/qml_appstyle_qml.cpp

Step to reproduce:

• Windows 10
• Build qt5.5.1 for VxWorks7 (release SR0530) from sources
• Configure Qt toolkit for vxWorks
• Add QtQuickCompiler.prf & qtquickcompiler.exe from Qt5.5.1 Mingw32 toolkit to VxWorks toolkit (as Qt support recommended to allow "Enable Quick Compiler feature" - support request https://account.qt.io/support/request/INC-1211714)
• Turn on "Enable Quick Compiler" feature for QtQuick application
• Run qmake
• Rebuild application

Building application stop with error:
process_begin: CreateProcess(NULL,
c:\dev\qt551_install_static\bin\qtquickcompiler.exe
--resource=/C/L4Development/L4Source/L4UI/src/gui/qml/qml.qrc
../../../L4UI/src/gui/qml/appconst.qml .qtquickcompiler/qml_appconst_qml.cpp,
...) failed.
make (e=2): The system cannot find the file specified.

Wrong link here: resource=/C/L4Development/L4Source/L4UI/src/gui/qml/qml.qrc
Shall be: resource=C:/L4Development/L4Source/L4UI/src/gui/qml/qml.qrc