* Package:    dev-perl/Alien-Gnuplot-1.33.0
 * Repository: gentoo
 * Maintainer: perl@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking Alien-Gnuplot-1.033.tar.gz to /var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/work
>>> Source unpacked in /var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/work
>>> Preparing source in /var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/work/Alien-Gnuplot-1.033 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/work/Alien-Gnuplot-1.033 ...
 * Using ExtUtils::MakeMaker
 * perl Makefile.PL PREFIX=/usr INSTALLDIRS=vendor INSTALLMAN3DIR=none DESTDIR=/var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/image/

Alien::Gnuplot: the executable file /usr/bin/gnuplot claims to be gnuplot, but 
I could not parse a version number from its output.  Sorry, I give up.



Gnuplot seems to not exist on your system, and you set PERL_MM_USE_DEFAULT --
so I'll try to install it for you.

Attempting to install/upgrade gnuplot on your system....

Trying yum...which: no yum in (/usr/lib/portage/python3.7/ebuild-helpers/xattr:/usr/lib/portage/python3.7/ebuild-helpers:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/share/bcc/tools:/usr/lib/llvm/11/bin:/usr/lib/llvm/10/bin:/usr/bin/cdsclient)
Trying apt-get...which: no apt-get in (/usr/lib/portage/python3.7/ebuild-helpers/xattr:/usr/lib/portage/python3.7/ebuild-helpers:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/opt/bin:/usr/share/bcc/tools:/usr/lib/llvm/11/bin:/usr/lib/llvm/10/bin:/usr/bin/cdsclient)


Couldn't find gnuplot, and couldn't get it from the standard package managers.
I'd try to download the packages from sourceforge, but there are roadblocks that
make it hard to automate.  

You can get gnuplot from the DOWNLOAD link here: "http://gnuplot.info". 

 * ERROR: dev-perl/Alien-Gnuplot-1.33.0::gentoo failed (configure phase):
 *   Unable to build!
 * 
 * Call stack:
 *     ebuild.sh, line 125:  Called src_configure
 *   environment, line 925:  Called perl-module_src_configure
 *   environment, line 501:  Called die
 * The specific snippet of code:
 *               perl Makefile.PL "$@" <<< "${pm_echovar}" || die "Unable to build!";
 * 
 * If you need support, post the output of `emerge --info '=dev-perl/Alien-Gnuplot-1.33.0::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=dev-perl/Alien-Gnuplot-1.33.0::gentoo'`.
 * The complete build log is located at '/var/log/portage/dev-perl:Alien-Gnuplot-1.33.0:20201105-021105.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/work/Alien-Gnuplot-1.033'
 * S: '/var/tmp/portage/dev-perl/Alien-Gnuplot-1.33.0/work/Alien-Gnuplot-1.033'