I can't get configure.exe to use mingw32-g++-dw2 which I just installed with the TDM-GCC package. It keeps using g++ despite changes I made in qmake.conf.

I correctly set the compiler to use in qmake.conf, configure even says it uses the win32-g++ qmake spec, but apparently it doesn't?

I get the following error message when running configure:
WARNING: Using static linking will disable the use of plugins.
Make sure you compile ALL needed modules into the library.
Creating qmake...
g++ -c -oproject.o -O -I. -Igenerators -Igenerators/unix -Igenerators/win32 -Ige
nerators/mac -Igenerators/symbian -IE:\SDK\Qt\4.7.4/include -IE:\SDK\Qt\4.7.4/in
clude/QtCore -IE:\SDK\Qt\4.7.4/include -IE:\SDK\Qt\4.7.4/include/QtCore -IE:\SDK
\Qt\4.7.4/src/corelib/global -IE:\SDK\Qt\4.7.4/src/corelib/xml -IE:\SDK\Qt\4.7.4
/mkspecs/win32-g++ -IE:\SDK\Qt\4.7.4/tools/shared -DQT_NO_TEXTCODEC -DQT_NO_UNIC
ODETABLES -DQT_LITE_COMPONENT -DQT_NO_PCRE -DQT_NODLL -DQT_NO_STL -DQT_NO_COMPRE
SS -DUNICODE -DHAVE_QCONFIG_CPP -DQT_BUILD_QMAKE -DQT_NO_THREAD -DQT_NO_QOBJECT
-DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_BOOTSTRAPPED -DQLIBRARYINFO_EPOCROO
T -DQMAKE_OPENSOURCE_EDITION project.cpp
process_begin: CreateProcess(NULL, g++ -c -oproject.o -O -I. -Igenerators -Igene
rators/unix -Igenerators/win32 -Igenerators/mac -Igenerators/symbian -IE:\SDK\Qt
\4.7.4/include -IE:\SDK\Qt\4.7.4/include/QtCore -IE:\SDK\Qt\4.7.4/include -IE:\S
DK\Qt\4.7.4/include/QtCore -IE:\SDK\Qt\4.7.4/src/corelib/global -IE:\SDK\Qt\4.7.
4/src/corelib/xml -IE:\SDK\Qt\4.7.4/mkspecs/win32-g++ -IE:\SDK\Qt\4.7.4/tools/sh
ared -DQT_NO_TEXTCODEC -DQT_NO_UNICODETABLES -DQT_LITE_COMPONENT -DQT_NO_PCRE -D
QT_NODLL -DQT_NO_STL -DQT_NO_COMPRESS -DUNICODE -DHAVE_QCONFIG_CPP -DQT_BUILD_QM
AKE -DQT_NO_THREAD -DQT_NO_QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_
BOOTSTRAPPED -DQLIBRARYINFO_EPOCROOT -DQMAKE_OPENSOURCE_EDITION project.cpp, ...
) failed.
make (e=2): The system cannot find the file specified.
mingw32-make: *** [project.o] Error 2
del project.o main.o makefile.o unixmake.o unixmake2.o mingw_make.o option.o win
makefile.o projectgenerator.o property.o meta.o makefiledeps.o metamakefile.o xm
loutput.o pbuilder_pbx.o borland_bmake.o msvc_nmake.o msvc_vcproj.o msvc_vcxproj
.o msvc_objectmodel.o msbuild_objectmodel.o symmake.o initprojectdeploy_symbian.
o symmake_abld.o symmake_sbsv2.o symbiancommon.o registry.o epocroot.o qbitarray
.o qbuffer.o qbytearray.o qcryptographichash.o qvsnprintf.o qbytearraymatcher.o
qconfig.o qdatetime.o qdir.o qdiriterator.o qfile.o qtemporaryfile.o qfileinfo.o
qabstractfileengine.o qfsfileengine.o qfsfileengine_iterator.o qfsfileengine_wi
n.o qfsfileengine_iterator_win.o qglobal.o qhash.o qiodevice.o qlibraryinfo.o ql
ist.o qlinkedlist.o qlocale.o qmalloc.o qmap.o qregexp.o qtextcodec.o qutfcodec.
o qstring.o qstringlist.o qsystemlibrary.o qtextstream.o quuid.o qvector.o qurl.
o qsettings.o qsettings_win.o qvariant.o qmetatype.o qxmlstream.o qxmlutils.o qn
umeric.o
Could Not Find E:\SDK\Qt\4.7.4\qmake\project.o
g++ -c -oproject.o -O -I. -Igenerators -Igenerators/unix -Igenerators/win32 -Ige
nerators/mac -Igenerators/symbian -IE:\SDK\Qt\4.7.4/include -IE:\SDK\Qt\4.7.4/in
clude/QtCore -IE:\SDK\Qt\4.7.4/include -IE:\SDK\Qt\4.7.4/include/QtCore -IE:\SDK
\Qt\4.7.4/src/corelib/global -IE:\SDK\Qt\4.7.4/src/corelib/xml -IE:\SDK\Qt\4.7.4
/mkspecs/win32-g++ -IE:\SDK\Qt\4.7.4/tools/shared -DQT_NO_TEXTCODEC -DQT_NO_UNIC
ODETABLES -DQT_LITE_COMPONENT -DQT_NO_PCRE -DQT_NODLL -DQT_NO_STL -DQT_NO_COMPRE
SS -DUNICODE -DHAVE_QCONFIG_CPP -DQT_BUILD_QMAKE -DQT_NO_THREAD -DQT_NO_QOBJECT
-DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_BOOTSTRAPPED -DQLIBRARYINFO_EPOCROO
T -DQMAKE_OPENSOURCE_EDITION project.cpp
process_begin: CreateProcess(NULL, g++ -c -oproject.o -O -I. -Igenerators -Igene
rators/unix -Igenerators/win32 -Igenerators/mac -Igenerators/symbian -IE:\SDK\Qt
\4.7.4/include -IE:\SDK\Qt\4.7.4/include/QtCore -IE:\SDK\Qt\4.7.4/include -IE:\S
DK\Qt\4.7.4/include/QtCore -IE:\SDK\Qt\4.7.4/src/corelib/global -IE:\SDK\Qt\4.7.
4/src/corelib/xml -IE:\SDK\Qt\4.7.4/mkspecs/win32-g++ -IE:\SDK\Qt\4.7.4/tools/sh
ared -DQT_NO_TEXTCODEC -DQT_NO_UNICODETABLES -DQT_LITE_COMPONENT -DQT_NO_PCRE -D
QT_NODLL -DQT_NO_STL -DQT_NO_COMPRESS -DUNICODE -DHAVE_QCONFIG_CPP -DQT_BUILD_QM
AKE -DQT_NO_THREAD -DQT_NO_QOBJECT -DQT_NO_GEOM_VARIANT -DQT_NO_DATASTREAM -DQT_
BOOTSTRAPPED -DQLIBRARYINFO_EPOCROOT -DQMAKE_OPENSOURCE_EDITION project.cpp, ...
) failed.
make (e=2): The system cannot find the file specified.
mingw32-make: *** [project.o] Error 2
Building qmake failed, return code 2