Build with c++14. Upgrade capnproto-c++ to 0.7.0 in travis config.

.travis.yml

@@ -8,14 +8,17 @@ env:
     - export PKG_CONFIG_PATH="$HOME/lib/pkgconfig"
 addons:
   apt:
+    sources:
+      - ubuntu-toolchain-r-test
     packages:
-      - gcc
-      - g++
+      - gcc-7
+      - g++-7
+
 install:
-  - curl -O https://capnproto.org/capnproto-c++-0.5.3.tar.gz
-  - tar zxf capnproto-c++-0.5.3.tar.gz
-  - cd capnproto-c++-0.5.3
-  - ./configure --prefix=$HOME
+  - curl -O https://capnproto.org/capnproto-c++-0.7.0.tar.gz
+  - tar zxf capnproto-c++-0.7.0.tar.gz
+  - cd capnproto-c++-0.7.0
+  - ./configure --prefix=$HOME CC=gcc-7 CXX=g++-7
   - make -j3
   - make install
   - cd ../
@@ -25,8 +28,8 @@ jdk:
   - openjdk7
   - openjdk8
 script:
-  - make
-  - make addressbook
+  - make CC=gcc-7 CXX=g++-7
+  - make CC=gcc-7 CXX=g++-7 addressbook
   - sbt test
   - sbt doc
 

Makefile

@@ -8,7 +8,7 @@ CAPNP_CXX_FLAGS=-I $(CAPNP_PREFIX)/include -L $(CAPNP_PREFIX)/lib -lkj -lcapnp
 endif
 
 CXX=g++
-CXX_FLAGS=-std=c++11 $(CAPNP_CXX_FLAGS)
+CXX_FLAGS=-std=c++14 $(CAPNP_CXX_FLAGS)
 
 CAPNPC_JAVA_SOURCES=compiler/src/main/cpp/capnpc-java.c++
 
@@ -25,7 +25,7 @@ capnpc-java : $(CAPNPC_JAVA_SOURCES)
 
 MINGW_LIBS=~/src/capnproto/c++/build-mingw/.libs/libcapnp.a ~/src/capnproto/c++/build-mingw/.libs/libkj.a
 MINGW_CXX=i686-w64-mingw32-g++
-MINGW_FLAGS=-O2 -DNDEBUG -I/usr/local/include -std=c++11 -static -static-libgcc -static-libstdc++
+MINGW_FLAGS=-O2 -DNDEBUG -I/usr/local/include -std=c++14 -static -static-libgcc -static-libstdc++
 capnpc-java.exe : $(CAPNPC_JAVA_SOURCES)
 	$(MINGW_CXX) $(MINGW_FLAGS) $(CAPNPC_JAVA_SOURCES) $(MINGW_LIBS) -o capnpc-java.exe