大神帮助：gcc升级到4.4.2有错误

[ -f stage_final ] || echo stage3 > stage_final
make[1]: Entering directory `/home/baozerui/Desktop/gcc-build'
make[2]: Entering directory `/home/baozerui/Desktop/gcc-build'
make[3]: Entering directory `/home/baozerui/Desktop/gcc-build'
rm -f stage_current
make[3]: Leaving directory `/home/baozerui/Desktop/gcc-build'
make[2]: Leaving directory `/home/baozerui/Desktop/gcc-build'
make[2]: Entering directory `/home/baozerui/Desktop/gcc-build'
Configuring stage 1 in ./gcc
configure: loading cache ./config.cache
configure: error: `GMPINC' has changed since the previous run:
configure: former value: `'
configure: current value: `-I/usr/local/include -I/usr/local/include'
configure: error: `GMPLIBS' has changed since the previous run:
configure: former value: `-lmpfr -lgmp'
configure: current value: `-L/usr/local/lib -L/usr/local/lib -lmpfr -lgmp'
configure: error: in `/home/baozerui/Desktop/gcc-build/gcc':
configure: error: changes in the environment can compromise the build
configure: error: run `make distclean' and/or `rm ./config.cache' and start over
make[2]: *** [configure-stage1-gcc] 错误 1
make[2]: Leaving directory `/home/baozerui/Desktop/gcc-build'
make[1]: *** [stage1-bubble] 错误 2
make[1]: Leaving directory `/home/baozerui/Desktop/gcc-build'
make: *** [all] 错误 2