lfs编译groff有点问题？

lennox

我的lfs编译到这有了点问题：
root:/static/src/groff-1.18.1# ./configure --prefix=/usr
checking for gcc... gcc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking that C++ compiler can compile simple program...no
configure: error: a working C++ compiler is required
是不是我的gcc-3.2没有编译好的原因？