[Python2.7 module _elementtree.so not found...]

Sorry for my disturbance...

I found there is a description table on gentoo's website.

http://www.gentoo.org/dyn/use-index.xml

It seems that I use the build flag when I was building the kernel, and forget to remove it from make.conf.

[Python2.7 module _elementtree.so not found...]

I solve it myself....

I rebuilt it with "-build" flag.

 

Could someone explain the purpose of adding "-build" flag.

[Python2.7 module _elementtree.so not found...]

I could not found the module _elementtree in /usr/lib64/python2.7/lib-dynload/

 

I also try to rebuild it, the issue is still there...
 

Should I enable specific USE flag for python to build _elementtree module?

Please help...