Description of problem:
Currently I am reviewing gle (bug 229676), which fails
to be rebuilt by mockbuild on FC-devel i386.
However, with qt4-devel-4.2.2-7.fc7, rpmbuild ends sucessfully.

Makefile created by qmake from qgle.pro doesn't contain
CC, CXX variables

Version-Release number of selected component (if applicable):
qt4-devel-4.2.3-1.fc7

How reproducible:
100%

Steps to Reproduce:
1. Try to rebuild gle-4.0.12a-1.fc6 on bug 229676
2.
3.
  
Actual results:
With qt-devel 4.2.3-1:
---------------------------------------
make[1]: Entering directory `/home/tasaka1/rpmbuild/BUILD/gle4/src/gui'
/usr/lib/qt4/bin/qmake
make
make[2]: Entering directory `/home/tasaka1/rpmbuild/BUILD/gle4/src/gui'
c -DQT_NO_DEBUG_OUTPUT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB
-I/usr/lib/qt4/mkspecs/linux-g++ 
-I. -I/QtCore -I/QtNetwork -I/QtGui -I. -Imoc -I. -o objects/qgle_statics.o
qgle_statics.cpp
make[2]: c: Command not found
make[2]: [objects/qgle_statics.o] Error 127 (ignored)
c -DQT_NO_DEBUG_OUTPUT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB
-I/usr/lib/qt4/mkspecs/linux-g++ -I. -I/QtCore -I/QtNetwork -I/QtGui -I. -Imoc
-I. -o objects/main.o main.cpp
make[2]: c: Command not found
make[2]: [objects/main.o] Error 127 (ignored)


Expected results:
With qt-devel 4.2.2-7:
-----------------------------------------------
make[1]: Entering directory `/home/tasaka1/rpmbuild/BUILD/gle4/src/gui'
/usr/lib/qt4/bin/qmake
make
make[2]: Entering directory `/home/tasaka1/rpmbuild/BUILD/gle4/src/gui'
g++ -c -pipe -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector
--param=ssp-buffer-size=4 -m32 -march=i386 -mtune=generic
-fasynchronous-unwind-tables -D_REENTRANT -Wall -W  -DQT_NO_DEBUG_OUTPUT
-DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB
-I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/QtCore
-I/usr/include/QtCore -I/usr/include/QtNetwork -I/usr/include/QtNetwork
-I/usr/include/QtGui -I/usr/include/QtGui -I/usr/include -I. -Imoc -I. -o
objects/qgle_statics.o qgle_statics.cpp