tex: enable build on systems without ellipsis.sty

Unfortunately some systems (e.g. RHEL7.5 and derivatives) lack
the ellipsis package. As it's function is merely cosmetic,
support these systems by loading the package conditionally.

Tested-by: Mihai Carabas <mihai.carabas@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/virtio.tex b/virtio.tex
index e1e2cb9..ef2d3fe 100644
--- a/virtio.tex
+++ b/virtio.tex
@@ -37,7 +37,11 @@
 \usepackage{tabularx}
 \usepackage{underscore}
 \usepackage{xstring}
-\usepackage{ellipsis}
+\IfFileExists{ellipsis.sty}{\usepackage{ellipsis}}{
+\message{!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}
+\message{LaTeX Warning: Missing ellipsis.sty: dots (...) will look ugly}
+\message{!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}
+}
 % This is an alternative to package underscore above
 % It makes it possible to disable hyphenation of upper-case
 % identifiers with underscore (of which we have many) by