环境：
centos 6.0 64位
rrdtool 1.4.5
问题：
Can't locate ExtUtils/MakeMaker.pm in @INC (@INC contains: /usr/l_perl /usr/lib64/perl5 /usr/share/perl5 .) at Makefile.PL line 1.
BEGIN failed--compilation aborted at Makefile.PL line 1.
make[3]: *** [perl-piped/Makefile] Error 2
make[3]: Leaving directory `/root/rrdtool/rrdtool-1.4.5/bindings'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/root/rrdtool/rrdtool-1.4.5/bindings'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/rrdtool/rrdtool-1.4.5'
make: *** [all] Error 2解决办法：
yum install perl-ExtUtils-CBuilder perl-ExtUtils-MakeMaker -y
