From 9d26b9be643ad458e38ab84511a61b06dc2f8706 Mon Sep 17 00:00:00 2001
From: Ross Churchley <ross@rosschurchley.com>
Date: Tue, 26 May 2015 12:36:37 -0700
Subject: [PATCH] Only load font theme when compiling with XeLaTeX

---
 beamerthemem.sty | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/beamerthemem.sty b/beamerthemem.sty
index cc88d88..e642f19 100644
--- a/beamerthemem.sty
+++ b/beamerthemem.sty
@@ -52,12 +52,18 @@
 \RequirePackage{etoolbox}
 \RequirePackage{tikz}
 \RequirePackage{pgfplots}
+\RequirePackage{ifxetex}
 
 \usetikzlibrary{backgrounds}
 \usetikzlibrary{calc}
 
 \usecolortheme{metropolis}
-\usefonttheme{metropolis}
+
+\ifxetex
+  \usefonttheme{metropolis}
+\else
+  \PackageWarning{beamerthemem}{You need to compile with XeLaTeX for the Fira fonts.}
+\fi
 
 %}}}
 %{{{ --- Titlepage --------------------