From b7978d99a837b682c417207603bc10afc6092493 Mon Sep 17 00:00:00 2001
From: Craig Warren <craig_warren@me.com>
Date: Mon, 18 Jan 2016 15:59:01 +0000
Subject: [PATCH] Added error message if gcc is not found on Mac OS X.

---
 setup.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 1f612a21..82739f27 100644
--- a/setup.py
+++ b/setup.py
@@ -103,7 +103,11 @@ if sys.platform == 'win32':
     linker_args = ['/openmp']
 # Mac OS X - needs gcc (usually via HomeBrew) because the default compiler LLVM (clang) does not support OpenMP
 elif sys.platform == 'darwin':
-    os.environ['CC'] = glob.glob('/usr/local/bin/gcc-[4-5]*')[0].split(os.sep)[-1]
+    gccpath = glob.glob('/usr/local/bin/gcc-[4-5]*')
+    if gccpath:
+        os.environ['CC'] = gccpath[0].split(os.sep)[-1]
+    else:
+        raise('Cannot find gcc in /usr/local/bin. gprMax requires gcc to be installed.')
     compile_args = ['-O3', '-fopenmp', '-w']
     linker_args = ['-fopenmp']
 # Linux