sphinx-pre-install: check for the need of graphviz-gd

On newer versions of graphviz packaging on Fedora, it is needed to
install a separate package for PDF support.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index 230d9cc..817241c 100755 (executable)
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -285,6 +285,10 @@ sub give_redhat_hints()
                "xelatex"               => "texlive-xetex-bin",
        );
 
+       my @fedora26_opt_pkgs = (
+               "graphviz-gd",          # Fedora 26: needed for PDF support
+       );
+
        my @fedora_tex_pkgs = (
                "texlive-collection-fontsrecommended",
                "texlive-collection-latex",
@@ -293,6 +297,11 @@ sub give_redhat_hints()
                "dejavu-sans-mono-fonts",
        );
 
+       my $release;
+
+       $release = $1 if ($system_release =~ /Fedora\s+release\s+(\d+)/);
+
+       check_rpm_missing(\@fedora26_opt_pkgs, 1) if ($pdf && $release >= 26);
        check_rpm_missing(\@fedora_tex_pkgs, 1) if ($pdf);
        check_missing_tex(1) if ($pdf);
        check_missing(\%map);