From 7d9bf8c7294e7b62c99be41b41e465bd14f5541f Mon Sep 17 00:00:00 2001
From: Pascal Obry <pascal@obry.net>
Date: Sun, 9 Apr 2017 10:18:02 +0200
Subject: [PATCH] Check for pdflatex tool.

If not present, exit.
---
 contrib/pdf_slideshow.lua | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/contrib/pdf_slideshow.lua b/contrib/pdf_slideshow.lua
index e834ad7..bfcdedc 100644
--- a/contrib/pdf_slideshow.lua
+++ b/contrib/pdf_slideshow.lua
@@ -39,6 +39,7 @@ format (all fields can be the empty string):
 
 ]]
 local dt = require "darktable"
+local df = require "lib/dtutils.file"
 require "official/yield"
 
 local gettext = dt.gettext
@@ -50,6 +51,11 @@ local function _(msgid)
     return gettext.dgettext("pdf_slideshow", msgid)
 end
 
+if not df.check_if_bin_exists("pdflatex") then
+   dt.print_error(_("pdflatex not found"))
+   return
+end
+
 dt.configuration.check_version(...,{4,0,0},{5,0,0})
 
 dt.preferences.register