Bump gcc and clang version

.ci/linux/run-tests.sh

@@ -2,7 +2,6 @@
 
 set -evx
 
-cmake -DBUILD_TESTS=ON -H. -Bbuild -DCMAKE_BUILD_TYPE=Release
-make -C build -j2
+cmake -DBUILD_TESTS=ON -H. -Bbuild && cmake --build build
 
 cd build && GTEST_COLOR=1 ctest --verbose

.travis.yml

@@ -12,17 +12,33 @@ matrix:
           compiler: clang
         - os: linux
           compiler: gcc
+          env:
+            - COMPILER=g++-6
+          addons:
+            apt:
+              sources: ['ubuntu-toolchain-r-test']
+              packages: ['g++-6']
         - os: linux
           compiler: clang
+            - COMPILER=clang++-5.0
+          addons:
+            apt:
+              sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-5.0']
+              packages: ['clang-5.0']
+
 before_install:
+    - export CXX=${COMPILER}
     - if [ $TRAVIS_OS_NAME == linux ]; then ./.ci/linux/gtest.sh; fi
+
 install:
     - if [ $TRAVIS_OS_NAME == osx ]; then brew update && brew install qt5 lmdb clang-format; fi
     - if [ $TRAVIS_OS_NAME == osx ]; then export CMAKE_PREFIX_PATH=/usr/local/opt/qt5; fi
     - if [ $TRAVIS_OS_NAME == linux ]; then ./.ci/linux/install-deps.sh; fi
+
 before_script:
     - if [ $TRAVIS_OS_NAME == linux ]; then source /opt/qt59/bin/qt59-env.sh; fi
     - cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=Release
+
 script:
     - make -C build -j2
     - if [ $TRAVIS_OS_NAME == osx ]; then make lint; fi

README.md

@@ -47,7 +47,7 @@ sudo emerge -a nheko
 - [LMDB](https://symas.com/lightning-memory-mapped-database/).
 - A compiler that supports C++11.
     - Clang 3.3 (or greater).
-    - GCC 4.8 (or greater).
+    - GCC 4.9.4 (or greater).
 
 ##### Arch Linux