CI add more compiler and raise warnings

.travis.yml

@@ -1,130 +1,159 @@
 language: cpp
 dist: trusty
-sudo: false
+sudo: required
+group: edge
 
 matrix:
   include:
-    # build on ubuntu
     - os: linux
+      compiler: gcc
+      env:
+        - COMPILER=g++-4.9
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
           packages:
             - g++-4.9
-      env:
-        - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
 
     - os: linux
+      compiler: gcc
+      env:
+        - COMPILER=g++-5
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
           packages:
             - g++-5
-      env:
-         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
 
     - os: linux
+      compiler: gcc
+      env:
+        - COMPILER=g++-6
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
           packages:
             - g++-6
-      env:
-        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
 
     - os: linux
+      compiler: gcc
+      env:
+        - COMPILER=g++-7
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
           packages:
             - g++-7
-      env:
-        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
 
-    # works on Precise and Trusty
     - os: linux
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.6
-          packages:
-            - clang-3.6
+      compiler: gcc
       env:
-        - MATRIX_EVAL="CC=clang-3.6 && CXX=clang++-3.6"
-
-    # works on Precise and Trusty
-    - os: linux
+        - COMPILER=g++-8
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.7
           packages:
-            - clang-3.7
-      env:
-        - MATRIX_EVAL="CC=clang-3.7 && CXX=clang++-3.7"
+            - g++-8
 
-    # works on Precise and Trusty
     - os: linux
+      compiler: gcc
+      env:
+        - COMPILER=g++-9
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
-            - llvm-toolchain-precise-3.8
           packages:
-            - clang-3.8
-      env:
-        - MATRIX_EVAL="CC=clang-3.8 && CXX=clang++-3.8"
+            - g++-9
+
 
-    # works on Trusty
     - os: linux
+      compiler: clang
+      env:
+        - COMPILER=clang++-3.9
+        - CXXFLAGS=-stdlib=libc++
+        - CC=clang-3.9
       addons:
         apt:
           sources:
             - llvm-toolchain-trusty-3.9
           packages:
             - clang-3.9
-      env:
-        - MATRIX_EVAL="CC=clang-3.9 && CXX=clang++-3.9"
 
-    # works on Trusty
     - os: linux
+      compiler: clang
+      env:
+        - COMPILER=clang++-4.0
+        - CXXFLAGS=-stdlib=libc++
+        - CC=clang-4.0
       addons:
         apt:
           sources:
             - llvm-toolchain-trusty-4.0
           packages:
             - clang-4.0
-      env:
-        - MATRIX_EVAL="CC=clang-4.0 && CXX=clang++-4.0"
 
-    # works on Trusty
     - os: linux
+      compiler: clang
+      env:
+        - COMPILER=clang++-5.0
+        - CXXFLAGS=-stdlib=libc++
+        - CC=clang-5.0
       addons:
         apt:
           sources:
             - llvm-toolchain-trusty-5.0
           packages:
             - clang-5.0
+
+    - os: linux
+      compiler: clang
       env:
-        - MATRIX_EVAL="CC=clang-5.0 && CXX=clang++-5.0"
+        - COMPILER=clang++-6.0
+        - CXXFLAGS=-stdlib=libc++
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-trusty-6.0
+            - ubuntu-toolchain-r-test
+          packages:
+            - clang-6.0
+
+    - os: linux
+      compiler: clang
+      env:
+        - COMPILER=clang++-7
+        - CXXFLAGS=-stdlib=libc++
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-trusty-7
+            - ubuntu-toolchain-r-test
+          packages:
+            - clang-7
 
     # build on osx
     - os: osx
       osx_image: xcode8
 
     - os: osx
-      osx_image: xcode9.1
+      osx_image: xcode9.4
 
-before_install:
-    - eval "${MATRIX_EVAL}"
+    - os: osx
+      osx_image: xcode10.3
+
+    - os: osx
+      osx_image: xcode11
 
 script:
+  # make sure CXX is correctly set
+  - if [[ "${COMPILER}" != "" ]] && [[ "${TRAVIS_COMPILER}" == "gcc" ]]; then export CXX=${COMPILER}; fi
+
   - mkdir build
   - cd build
-  - cmake .. && make && ./aixlog_example
+  - cmake -DCMAKE_CXX_FLAGS="-Werror -Wall -Wextra -pedantic -O2" .. && make && ./aixlog_example