Building Qt5.1.1 MinGw static on windows 7 ends with error

[ashokb]

Hi i am trying to build qt5.1.1 statically on my windows 7 pc.
I downloaded qt5.1.1 and installed on my machine.
I have modified qmake.conf file at,
C:\Qt\Qt5.1.1\5.1.1\Src\qtbase\mkspecs\win32-g++
as,
QMAKE_LFLAGS = -static -static-libgcc

I am running following cmd's,

cd c:\Qt\Qt5.1.1\5.1.1\Src\qtbase

configure -static -prefix “C:\Qt\Qt5.1.1_static” -opengl desktop -nomake examples -nomake tests

mingw32-make

but after running mingw32-make i get the following error.

@
c:\Qt\Qt5.1.1\5.1.1\Src\qtbase>mingw32-make
cd src/ && ( test -e Makefile || C:/Qt/Qt5.1.1/5.1.1/Src/qtbase/bin/qmake C:/Qt/
Qt5.1.1/5.1.1/Src/qtbase/src/src.pro -o Makefile ) && mingw32-make -f Makefile
mingw32-make[1]: Entering directory 'c:/Qt/Qt5.1.1/5.1.1/Src/qtbase/src'
cd tools/bootstrap/ && ( test -e Makefile || c:/Qt/Qt5.1.1/5.1.1/Src/qtbase/bin/
qmake.exe C:/Qt/Qt5.1.1/5.1.1/Src/qtbase/src/tools/bootstrap/bootstrap.pro -o Ma
kefile ) && c:/Qt/Qt5.1.1/Tools/mingw48_32/bin/mingw32-make -f Makefile
/usr/bin/sh: c:/Qt/Qt5.1.1/Tools/mingw48_32/bin/mingw32-make: Invalid argument
Makefile:56: recipe for target 'sub-bootstrap-make_first' failed
mingw32-make[1]: *** [sub-bootstrap-make_first] Error 126
mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.1.1/5.1.1/Src/qtbase/src'
makefile:41: recipe for target 'sub-src-make_first' failed
mingw32-make: *** [sub-src-make_first] Error 2
@

I have installed python.
What i am missing ? Any help please...