Build Log: conf-magick-core7.1

Processing: [default: loading data] [conf-magick-core7: sh] + /usr/bin/sh "-c" "pkg-config --exists MagickCore && pkg-config --modversion MagickCore | awk -F. '{ if ($1 == 7) exit 0; else exit 1; }'" (CWD=/home/opam/.opam/default/.opam-switch/build/conf-magick-core7.1) build failed... [ERROR] The compilation of conf-magick-core7.1 failed at "sh -c pkg-config --exists MagickCore && pkg-config --modversion MagickCore | awk -F. '{ if ($1 == 7) exit 0; else exit 1; }'".