我现在正在安装valgrind，直到'make install'命令执行良好为止。下一个命令-'make regtest'输出下一个错误：
../../depcomp: line 689: exec: g++: not found
make[5]: *** [leak_cpp_interior.o] Error 127
make[5]: Leaving directory `/home/kbubuntu/valgrind-3.9.0/memcheck/tests'
make[4]: *** [check-am] Error 2
make[4]: Leaving directory `/home/kbubuntu/valgrind-3.9.0/memcheck/tests'
make[3]: *** [check-recursive] Error 1
make[3]: Leaving directory `/home/kbubuntu/valgrind-3.9.0/memcheck/tests'
make[2]: *** [check-recursive] Error 1
make[2]: Leaving directory `/home/kbubuntu/valgrind-3.9.0/memcheck'
make[1]: *** [check-recursive] Error 1
make[1]: Leaving directory `/home/kbubuntu/valgrind-3.9.0'
make: *** [check] Error 2
我该如何解决？
谢谢。