错误如下：
Running build steps for project test...
Starting: /home/drongs/qtsdk-2009.02/qt/bin/qmake /home/drongs/test/test.pro -spec linux-g++ -r CONFIG+=debug
Exited with code 0.
Starting: /usr/bin/make -w
make:进入目录'/home/drongs/test'
g++ -c -pipe -g -Wall -W -D_REENTRANT -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I../qtsdk-2009.02/qt/mkspecs/linux-g++ -I. -I../qtsdk-2009.02/qt/include/QtCore -I../qtsdk-2009.02/qt/include/QtGui -I../qtsdk-2009.02/qt/include -I. -I. -I. -I. -o main.o main.cpp
make: g++：命令未找到
make: *** [main.o] 错误 127
make:离开目录“/home/drongs/test”
Exited with code 2.
Error while building project test
When executing build step 'Make'
这个问题如何解决，请各位大侠帮助一下，谢谢
