==> libsigsegv is already installed in /home/spack1/spack/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/libsigsegv-2.11-fypapcprssrj3nstp6njprskeyynsgaz
==> m4 is already installed in /home/spack1/spack/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/m4-1.4.18-suf5jtcfehivwfesrc5hjy72r4nukyel
==> pkgconf is already installed in /home/spack1/spack/opt/spack/linux-ubuntu16.04-x86_64/gcc-5.4.0/pkgconf-1.4.2-fovrh7alpft646n6mhis5mml6k6e5f4v