>>> Unpacking source...
>>> Unpacking mpeg4ip-1.5.0.1.tar.gz to /var/tmp/portage/media-libs/libmp4v2-1.5.0.1-r2/work
 [32;01m*[0m Applying libmp4v2-1.5.0.1+glibc-2.10.patch ...
[A[72C  [34;01m[ [32;01mok[34;01m ][0m
 [32;01m*[0m Running eautoreconf in '/var/tmp/portage/media-libs/libmp4v2-1.5.0.1-r2/work/mpeg4ip-1.5.0.1' ...
 [32;01m*[0m Running aclocal ...
[A[72C  [34;01m[ [32;01mok[34;01m ][0m
 [32;01m*[0m Running libtoolize --copy --force --automake ...
[A[72C  [34;01m[ [32;01mok[34;01m ][0m
 [32;01m*[0m Running aclocal ...
[A[72C  [34;01m[ [32;01mok[34;01m ][0m
 [32;01m*[0m Running autoconf ...
[A[72C  [34;01m[ [31;01m!![34;01m ][0m

 [31;01m*[0m Failed Running autoconf !
 [31;01m*[0m 
 [31;01m*[0m Include in your bugreport the contents of:
 [31;01m*[0m 
 [31;01m*[0m   /var/tmp/portage/media-libs/libmp4v2-1.5.0.1-r2/temp/autoconf.out

 [31;01m*[0m 
 [31;01m*[0m ERROR: media-libs/libmp4v2-1.5.0.1-r2 failed.
 [31;01m*[0m Call stack:
 [31;01m*[0m               ebuild.sh, line   49:  Called src_unpack
 [31;01m*[0m             environment, line 2715:  Called eautoreconf
 [31;01m*[0m             environment, line  874:  Called eautoconf
 [31;01m*[0m             environment, line  816:  Called autotools_run_tool 'autoconf'
 [31;01m*[0m             environment, line  357:  Called die
 [31;01m*[0m The specific snippet of code:
 [31;01m*[0m           die "Failed Running $1 !";
 [31;01m*[0m  The die message:
 [31;01m*[0m   Failed Running autoconf !
 [31;01m*[0m 
 [31;01m*[0m If you need support, post the topmost build error, and the call stack if relevant.
 [31;01m*[0m A complete build log is located at '/var/tmp/portage/media-libs/libmp4v2-1.5.0.1-r2/temp/build.log'.
 [31;01m*[0m The ebuild environment file is located at '/var/tmp/portage/media-libs/libmp4v2-1.5.0.1-r2/temp/environment'.
 [31;01m*[0m