From 8a77a927f2b695140f747ed5c1782db28fcb578f Mon Sep 17 00:00:00 2001
From: Doc Walker <4-20ma@wvfans.net>
Date: Sat, 10 Sep 2016 21:41:37 -0500
Subject: [PATCH 1/4] Add missing travis support files

---
 travis/common.sh | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100755 travis/common.sh

diff --git a/travis/common.sh b/travis/common.sh
new file mode 100755
index 0000000..d115085
--- /dev/null
+++ b/travis/common.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+
+function build_examples()
+{
+  # track the exit code for this platform
+  local exit_code=0
+  # loop through results and add them to the array
+  examples=($(find $PWD/examples/ -name "*.pde" -o -name "*.ino"))
+
+  # get the last example in the array
+  local last="${examples[@]:(-1)}"
+
+  # loop through example sketches
+  for example in "${examples[@]}"; do
+
+    # store the full path to the example's sketch directory
+    local example_dir=$(dirname $example)
+
+    # store the filename for the example without the path
+    local example_file=$(basename $example)
+
+    echo "$example_file: "
+    local sketch="$example_dir/$example_file"
+    echo "$sketch"
+    #arduino -v --verbose-build --verify $sketch
+
+    # verify the example, and save stdout & stderr to a variable
+    # we have to avoid reading the exit code of local:
+    # "when declaring a local variable in a function, the local acts as a command in its own right"
+    local build_stdout
+    build_stdout=$(arduino --verify $sketch 2>&1)
+
+    # echo output if the build failed
+    if [ $? -ne 0 ]; then
+      # heavy X
+      echo -e "\xe2\x9c\x96"
+      echo -e "----------------------------- DEBUG OUTPUT -----------------------------\n"
+      echo "$build_stdout"
+      echo -e "\n------------------------------------------------------------------------\n"
+
+      # mark as fail
+      exit_code=1
+
+    else
+      # heavy checkmark
+      echo -e "\xe2\x9c\x93"
+    fi
+  done
+
+  return $exit_code
+}

From aa39b7d0d077779653251b37d84df6b6eaa22912 Mon Sep 17 00:00:00 2001
From: Doc Walker <4-20ma@wvfans.net>
Date: Sat, 10 Sep 2016 21:46:01 -0500
Subject: [PATCH 2/4] Clean up use of env vars

---
 .travis.yml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 6c4888e..59fc746 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,11 +8,11 @@ before_install:
   - sudo mv arduino-1.6.5 /usr/local/share/arduino
   - sudo ln -s /usr/local/share/arduino/arduino /usr/local/bin/arduino
 install:
-  - ln -s $PWD /usr/local/share/arduino/libraries/ModbusMaster
+  - ln -s ${PWD} /usr/local/share/arduino/libraries/ModbusMaster
   - arduino --pref "compiler.warning_level=all" --save-prefs
 script:
-  - "echo $PWD"
-  - "echo $HOME"
-  - "ls $PWD"
-  - source $TRAVIS_BUILD_DIR/travis/common.sh
+  - echo $PWD
+  - echo $HOME
+  - ls -al $PWD
+  - source ${TRAVIS_BUILD_DIR}/travis/common.sh
   - build_examples

From ccda3da07b51d189ff3725e4cbab5d794dd265ac Mon Sep 17 00:00:00 2001
From: Doc Walker <4-20ma@wvfans.net>
Date: Sat, 10 Sep 2016 21:51:30 -0500
Subject: [PATCH 3/4] Refactor Arduino version to env var

---
 .travis.yml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 59fc746..4903f98 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,12 @@
 language: c
 before_install:
+  - export ARDUINO_VERSION=1.6.5
   - "/sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16"
   - sleep 3
   - export DISPLAY=:1.0
-  - wget http://downloads.arduino.cc/arduino-1.6.5-linux64.tar.xz
-  - tar xf arduino-1.6.5-linux64.tar.xz
-  - sudo mv arduino-1.6.5 /usr/local/share/arduino
+  - wget http://downloads.arduino.cc/arduino-${ARDUINO_VERSION}-linux64.tar.xz
+  - tar xf arduino-${ARDUINO_VERSION}-linux64.tar.xz
+  - sudo mv arduino-${ARDUINO_VERSION} /usr/local/share/arduino
   - sudo ln -s /usr/local/share/arduino/arduino /usr/local/bin/arduino
 install:
   - ln -s ${PWD} /usr/local/share/arduino/libraries/ModbusMaster

From 9a07a91ecdcd467c219461a8734f7a8f8f7a05a6 Mon Sep 17 00:00:00 2001
From: Doc Walker <4-20ma@wvfans.net>
Date: Sat, 10 Sep 2016 21:51:51 -0500
Subject: [PATCH 4/4] Add travis badge to README

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 15d81d5..b83310c 100755
--- a/README.md
+++ b/README.md
@@ -1,10 +1,12 @@
 ModbusMaster
 ============
 [![Tag](https://img.shields.io/github/tag/4-20ma/ModbusMaster.svg)][Tag]
+[![Travis](https://img.shields.io/travis/4-20ma/ModbusMaster.svg)][Travis]
 [![License](https://img.shields.io/github/license/4-20ma/ModbusMaster.svg)][License]
 [![Code of conduct](https://img.shields.io/badge/%E2%9D%A4-code%20of%20conduct-blue.svg)][Code of conduct]
 
 [Tag]:              https://github.com/4-20ma/ModbusMaster
+[Travis]:           https://travis-ci.org/4-20ma/ModbusMaster
 [License]:          COPYING
 [Code of conduct]:  https://github.com/4-20ma/ModbusMaster/blob/master/CODE_OF_CONDUCT.md