Travis CI Integration scripts (#294)

.travis.yml

+language: cpp
+
+packages: &gcc5_pkgs
+  - gcc-5
+  - g++-5
+  - libstdc++6
+
+matrix:
+  include:
+    # build and run all tests
+    - compiler: gcc
+      env:
+        - GCC_VER=5
+        - ADDRESS_MODEL=64
+        - BUILD_SYSTEM=cmake
+        - PATH=$HOME/bin:$PATH
+        - VARIANT=test
+      addons: &ao_gcc5
+        apt:
+          sources: 
+            - ubuntu-toolchain-r-test
+          packages: *gcc5_pkgs
+    # build all examples
+    - compiler: gcc
+      env:
+        - GCC_VER=5
+        - ADDRESS_MODEL=64
+        - BUILD_SYSTEM=cmake
+        - PATH=$HOME/bin:$PATH
+        - VARIANT=examples
+      addons: *ao_gcc5
+          
+cache:
+  directories:
+    - cmake
+
+before_install:
+  - dlib/travis/before-install.sh
+
+install:
+    - if [ "$CXX" == "g++" ]; then export CXX=g++-$GCC_VER; export CC=gcc-$GCC_VER; fi
+    - if [ "$CXX" == "clang++" ]; then export CXX=clang++-$CLANG_VER; export CC=clang-$CLANG_VER; fi
+
+script:
+  - dlib/travis/build-and-test.sh
+
+
+notifications:
+  email:
+    false

dlib/travis/before-install.sh

+#!/usr/bin/env bash
+
+# Exit if anything fails.
+set -eux
+
+## download CMAKE 3.5 to get colored output
+if [[ ! -x cmake/bin/cmake && -d cmake ]]; then
+    rm -rf cmake
+fi
+if [[ ! -d cmake ]]; then
+  CMAKE_URL="http://www.cmake.org/files/v3.5/cmake-3.5.2-Linux-x86_64.tar.gz"
+  mkdir -v cmake 
+  wget --no-check-certificate -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake
+fi
+
+
+

dlib/travis/build-and-test.sh

+#!/usr/bin/env bash
+# Exit if anything fails.
+set -eux
+
+# build dlib and tests
+mkdir build
+cd build
+if [ "$VARIANT" = "test" ]; then
+  ../cmake/bin/cmake ../dlib/test -DCMAKE_BUILD_TYPE=Release
+  ../cmake/bin/cmake --build . --target dtest -- -j 2
+  ./dtest --runall
+fi
+if [ "$VARIANT" = "examples" ]; then
+  ../cmake/bin/cmake ../examples -DCMAKE_BUILD_TYPE=Release
+  ../cmake/bin/cmake --build . -- -j 2
+fi
+
+cd ..
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