From d5ff7fda6ec26df1e574ef9fc38ffc082ec2daca Mon Sep 17 00:00:00 2001
From: Erik Schnetter <schnetter@gmail.com>
Date: Fri, 8 Jan 2016 22:41:18 -0500
Subject: [PATCH] Ensure the APPS environment variable is not set when building
 OpenSSL

---
 var/spack/packages/openssl/package.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/var/spack/packages/openssl/package.py b/var/spack/packages/openssl/package.py
index a24de20cc37..36b63e1262f 100644
--- a/var/spack/packages/openssl/package.py
+++ b/var/spack/packages/openssl/package.py
@@ -17,6 +17,10 @@ class Openssl(Package):
     parallel = False
 
     def install(self, spec, prefix):
+        # OpenSSL uses a variable APPS in its Makefile. If it happens to be set
+        # in the environment, then this will override what is set in the
+        # Makefile, leading to build errors.
+        del env['APPS']
         if spec.satisfies("=darwin-x86_64") or spec.satisfies("=ppc64"):
             # This needs to be done for all 64-bit architectures (except Linux,
             # where it happens automatically?)