Roger Mason schrieb:
> Hello,
>
> Has anyone else run into this:
>
> emerge virtual/emacs
>
> [snip]
>
>  
>>>> Unpacking m4-1.4.11.tar.lzma to /var/tmp/portage/m4-1.4.11/work
>>>>      
> unpack m4-1.4.11.tar.lzma: file format not recognized. Ignoring.
>  
>>>> Source unpacked.
>>>> Compiling source in /var/tmp/portage/m4-1.4.11 ...
>>>>      
>
> !!! ERROR: sys-devel/m4-1.4.11 failed.
> Call stack:
>  ebuild.sh, line 1546:  Called dyn_compile
>  ebuild.sh, line 937:  Called src_compile
>  m4-1.4.11.ebuild, line 23:  Called econf '--enable-nls'
>  '--enable-changeword'
>  ebuild.sh, line 543:  Called die
>
> !!! no configure script found
> !!! If you need support, post the topmost build error, and the call
> !!! stack if relevant.
>
> I looked on bugzilla, where it was suggested to run:
>
> emerge -1 app-arch/lzma-utils
>
> I did that but the error on m4 persists.
>
> If anyone has a workaround, please pass it on.
>
> Thanks,
> Roger
>  
First try to do

rm -rv /var/tmp/portage/*


and emerge it again.