Jenkins update to gcc5 (#1311)

* Move to gcc5

* Compilation fix (don't warn about c++14)

* Remove gcc 4.8 builds from Travis

Author: pervazea

.travis.yml

@@ -14,46 +14,6 @@ matrix:
               - PELOTON_BUILD_TYPE=Debug
               - COVERALLS=Off
 
-        # Linux builds for gcc 4.8
-        - os: linux
-          sudo: required
-          dist: trusty
-          compiler: gcc
-          addons:
-              apt:
-                  sources:
-                      - llvm-toolchain-precise-3.7
-                      - ubuntu-toolchain-r-test
-                  packages:
-                    - g++-4.8
-          env:
-              # NAME has no actual use, just to make the travis jobs overview more clear
-              - NAME="gcc4.8 Debug"
-              - CXX=g++-4.8
-              - CC=gcc-4.8
-              - PELOTON_BUILD_TYPE=Debug
-              # COVERALLS: we run coveralls only for one compiler
-              - COVERALLS=Off
-
-        - os: linux
-          sudo: required
-          dist: trusty
-          compiler: gcc
-          addons:
-              apt:
-                  sources:
-                      - llvm-toolchain-precise-3.7
-                      - ubuntu-toolchain-r-test
-                  packages:
-                    - g++-4.8
-          env:
-              # NAME has no actual use, just to make the travis jobs overview more clear
-              - NAME="gcc4.8 Release"
-              - CXX=g++-4.8
-              - CC=gcc-4.8
-              - PELOTON_BUILD_TYPE=Release
-              - COVERALLS=Off
-
         # Linux builds for gcc 5
         - os: linux
           sudo: required

CMakeLists.txt

@@ -42,12 +42,12 @@ include(cmake/Dependencies.cmake)
 
 # ---[ C++11 Flags
 include(CheckCXXCompilerFlag)
-check_cxx_compiler_flag("-std=c++1y" COMPILER_SUPPORTS_CXX1Y)
+check_cxx_compiler_flag("-std=c++11" COMPILER_SUPPORTS_CXX11)
 
-if(COMPILER_SUPPORTS_CXX1Y)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y")
+if(COMPILER_SUPPORTS_CXX11)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wno-c++14-compat")
 else()
-    message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++1Y support. Please use a different C++ compiler.")
+    message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
 endif()
 
 # Create a new pre-processor macro __PELOTONFILE__ that has a truncated

Jenkinsfile

@@ -43,10 +43,15 @@ pipeline {
                     }
                 }
 
-                stage('Ubuntu Trusty/gcc-4.8.4/llvm-3.7.1 (Debug)') {
+                stage('Ubuntu Trusty/gcc-5.4.0/llvm-3.7.1 (Debug)') {
                     agent { docker { image 'ubuntu:trusty' } }
                     steps {
                         sh 'sudo /bin/bash -c "source ./script/installation/packages.sh"'
+                        sh 'sudo apt-get -y install software-properties-common'
+                        sh 'sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test'
+                        sh 'sudo apt-get update'
+                        sh 'sudo apt-get -y install gcc-5 g++-5'
+                        sh 'sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 1 --slave /usr/bin/g++ g++ /usr/bin/g++-5'
                         sh 'python script/validators/source_validator.py'
                         sh 'mkdir build'
                         sh 'cd build && cmake -DCMAKE_BUILD_TYPE=Debug -DUSE_SANITIZER=Address -DCOVERALLS=False .. && make -j4'
@@ -59,10 +64,15 @@ pipeline {
                     }
                 }
 
-                stage('Ubuntu Trusty/gcc-4.8.4/llvm-3.7.1 (Release)') {
+                stage('Ubuntu Trusty/gcc-5.4.0/llvm-3.7.1 (Release)') {
                     agent { docker { image 'ubuntu:trusty' } }
                     steps {
                         sh 'sudo /bin/bash -c "source ./script/installation/packages.sh"'
+                        sh 'sudo apt-get -y install software-properties-common'
+                        sh 'sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test'
+                        sh 'sudo apt-get update'
+                        sh 'sudo apt-get -y install gcc-5 g++-5'
+                        sh 'sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 1 --slave /usr/bin/g++ g++ /usr/bin/g++-5'
                         sh 'python script/validators/source_validator.py'
                         sh 'mkdir build'
                         sh 'cd build && cmake -DCMAKE_BUILD_TYPE=Release -DCOVERALLS=False .. && make -j4'