I am trying to start Circos in Debian but I get two missing modulesroot@masi:/home/masi/circos-0.69# bin/circos -modules | grep missingmissing            GDmissing            GD::PolylineTrying to installroot@masi:/home/masi/circos-0.69# cpan GDCPAN: Storable loaded ok (v2.49_01)Reading '/root/.local/share/.cpan/Metadata'  Database was generated on Fri, 18 Nov 2016 15:53:48 GMTRunning install for module 'GD'CPAN: Digest::SHA loaded ok (v5.88)CPAN: Compress::Zlib loaded ok (v2.064)Checksum for /root/.local/share/.cpan/sources/authors/id/L/LD/LDS/GD-2.56.tar.gz okCPAN: File::Temp loaded ok (v0.2304)CPAN: YAML loaded ok (v1.13)CPAN: Parse::CPAN::Meta loaded ok (v1.4414)CPAN: CPAN::Meta loaded ok (v2.142690)CPAN: Module::CoreList loaded ok (v5.20150214)CPAN: Module::Build loaded ok (v0.421)Configuring L/LD/LDS/GD-2.56.tar.gz with Build.PL**UNRECOVERABLE ERROR**Could not find gdlib-config in the search path. Please install libgd 2.0.28 or higher.Warning: No success on command[/usr/bin/perl Build.PL --installdirs site]  LDS/GD-2.56.tar.gz  /usr/bin/perl Build.PL --installdirs site -- NOT OKI also did apt-get install libgd and cpan libgd but does not help. OS: Debian 8.5Perl: 5.20Linux kernel: 4.6 backports    
How to instal Perl modules GD and GD::Polyline in Debian?
debian;software installation;perl;cpan
sudo apt-get install libgd-perlwill install GD and GD::Polyline.