From 7fd1e7b5298d1c7a115019d6d6b61d3d7224f04a Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Sat, 3 Feb 2018 20:16:39 -0500
Subject: ...

---
 .travis.yml | 73 ++++++++++++++++++++++++++++++++++++++++---------------------
 Makefile    |  4 ++--
 2 files changed, 50 insertions(+), 27 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 31ebff7..d7971ee 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,34 +1,57 @@
 language: cpp
-compiler: gcc
-sudo: required
-dist: trusty
-
 matrix:
-    fast_finish: true
-    include:
-        - os: linux
-      	  addons:
-      	  	apt:
-      	    	sources:
-      	    	  - ubuntu-toolchain-r-test
-      	    	packages:
-      	    	  - g++-4.9
-      	env:
-      	   - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
+  include:
+    # works on Precise and Trusty
+    - os: linux
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-4.9
+      env:
+         - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
+
+    # works on Precise and Trusty
+    - os: linux
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-5
+      env:
+         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
 
-        - os: linux
-      	  addons:
-      	  	apt:
-      	    	sources:
-      	    	  - ubuntu-toolchain-r-test
-      	    	packages:
-      	    	  - g++-5
-      	env:
-      	   - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
+    # works on Precise and Trusty
+    - os: linux
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-6
+      env:
+        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
+
+    # works on Precise and Trusty
+    - os: linux
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-7
+      env:
+        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
 
 before_install:
-    - sudo apt-get install libboost-all-dev
     - eval "${MATRIX_EVAL}"
 
+install:
+  	- sudo apt-get install libboost-all-dev
+
 script:
     - make
+    - ./test14 | diff - test_ref.txt
+    - ./test17 | diff - test_ref.txt
diff --git a/Makefile b/Makefile
index 3ac8bff..ba6ee2c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 .PHONY: all
 all: test14 test17
 test14: test.cpp promise.hpp
-	g++ -o $@ test.cpp -std=c++14 -Wall -Wextra -Wpedantic -O2
+	$(CXX) -o $@ test.cpp -std=c++14 -Wall -Wextra -Wpedantic -O2
 test17: test.cpp promise.hpp
-	g++ -o $@ test.cpp -std=c++17 -Wall -Wextra -Wpedantic -O2
+	$(CXX) -o $@ test.cpp -std=c++17 -Wall -Wextra -Wpedantic -O2
-- 
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