Travis testing extended to test c++11 and c++14 with gcc-5

- SWIG executable compiled with gcc-5 using both c++11 and c++14 standards
- cpp11 tests enabled using c++11 standard
- Add clang compile using c++11

.travis.yml

@@ -1,11 +1,14 @@
 language: cpp
-compiler:
-  - clang
-  - gcc
-env:
-  - SWIGLANG=
 matrix:
   include:
+    - compiler: clang
+      env: SWIGLANG=
+    - compiler: gcc
+      env: SWIGLANG=
+    - compiler: gcc
+      env: SWIGLANG= GCC5=1 CPP11=1
+    - compiler: gcc
+      env: SWIGLANG= GCC5=1 CPP14=1
     - compiler: gcc
       env: SWIGLANG=csharp
     - compiler: gcc
@@ -62,6 +65,12 @@ matrix:
       env: SWIGLANG=scilab
     - compiler: gcc
       env: SWIGLANG=tcl
+    - compiler: gcc
+      env: SWIGLANG=csharp GCC5=1 CPP11=1
+    - compiler: gcc
+      env: SWIGLANG=java GCC5=1 CPP11=1
+    - compiler: gcc
+      env: SWIGLANG=python GCC5=1 CPP11=1
   allow_failures:
     # Lots of failing tests currently
     - compiler: gcc
@@ -85,6 +94,7 @@ before_install:
   - sudo apt-get -qq update
   - time sudo apt-get -qq install libboost-dev
   - if test -z "$SWIGLANG"; then sudo apt-get -qq install yodl; fi
+  - if test -n "$GCC5"; then sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test && sudo apt-get -qq update && sudo apt-get install -qq g++-5 && export CC=gcc-5 && export CXX=g++-5; fi
   - if test "$SWIGLANG" = "csharp"; then sudo apt-get -qq install mono-devel; fi
   - if test "$SWIGLANG" = "d"; then wget http://downloads.dlang.org/releases/2014/dmd_2.066.0-0_amd64.deb; sudo dpkg -i dmd_2.066.0-0_amd64.deb; fi
   - if test "$SWIGLANG" = "go"; then go env | sed -e 's/^/export /' > goenvsetup && source goenvsetup && rm -f goenvsetup; fi # Until configure.ac is fixed
@@ -100,18 +110,21 @@ before_install:
   - if test "$SWIGLANG" = "php"; then sudo apt-get install php5-cli php5-dev; fi
   - if test "$SWIGLANG" = "python"; then git clone https://github.com/jcrocholl/pep8.git && pushd pep8 && git checkout tags/1.5.7 && python ./setup.py build && sudo python ./setup.py install && popd; fi
   - if test "$SWIGLANG" = "python" -a "$PY3" -a -z "$VER"; then sudo apt-get install -qq python3-dev; fi
-  - if test "$SWIGLANG" = "python" -a "$VER"; then sudo add-apt-repository -y ppa:fkrull/deadsnakes && sudo apt-get -qq update && sudo apt-get -qq install python${VER}-dev && export CONFIGOPTS="--with-python${PY3}=python${VER}"; fi
+  - if test "$SWIGLANG" = "python" -a "$VER"; then sudo add-apt-repository -y ppa:fkrull/deadsnakes && sudo apt-get -qq update && sudo apt-get -qq install python${VER}-dev && CONFIGOPTS+=("--with-python${PY3}=python${VER}"); fi
   - if test "$SWIGLANG" = "r"; then sudo apt-get -qq install r-base; fi
   - if test "$SWIGLANG" = "scilab"; then sudo apt-get -qq install scilab; fi
   - if test "$SWIGLANG" = "tcl"; then sudo apt-get -qq install tcl8.4-dev; fi
+  - if test -n "$CPP11"; then CONFIGOPTS+=(--enable-cpp11-testing --without-maximum-compile-warnings "CXXFLAGS=-std=c++11 -Wall -Wextra" "CFLAGS=-std=c11 -Wall -Wextra"); fi
+  - if test -n "$CPP14"; then CONFIGOPTS+=(--enable-cpp11-testing --without-maximum-compile-warnings "CXXFLAGS=-std=c++14 -Wall -Wextra" "CFLAGS=-std=c11 -Wall -Wextra"); fi
   - $CC --version
   - $CXX --version
   # Stricter compile flags for examples. Various headers and SWIG generated code prevents full use of -pedantic.
   - export cflags=$(Tools/testflags.py --language $SWIGLANG --cflags) && echo $cflags
   - export cxxflags=$(Tools/testflags.py --language $SWIGLANG --cxxflags) && echo $cxxflags
 script:
   - echo 'Configuring...' && echo -en 'travis_fold:start:script.1\\r'
-  - ./autogen.sh && mkdir -p build/build && cd build/build && ../../configure $CONFIGOPTS
+  - echo "${CONFIGOPTS[@]}"
+  - ./autogen.sh && mkdir -p build/build && cd build/build && ../../configure "${CONFIGOPTS[@]}"
   - echo -en 'travis_fold:end:script.1\\r'
   - make -s $SWIGJOBS
   - ./swig -version && ./swig -pcreversion