Add Travis CI support

.travis.yml

@@ -0,0 +1,41 @@
+language: cpp
+
+addons:
+  apt:
+    sources:
+      - llvm-toolchain-trusty-5.0
+    packages:
+      - clang-format-5.0 # needed for formatting
+
+env:
+  global:
+    - CLANG_FORMAT_SUFFIX="-5.0"
+
+matrix:
+  include:
+    - os: linux
+      env: MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-5
+    - os: linux
+      env: MATRIX_EVAL="CC=clang-4.0 && CXX=clang++-4.0"
+      addons:
+        apt:
+          sources:
+            - llvm-toolchain-trusty-4.0
+          packages:
+            - clang-4.0 # note this is *NOT* the same version as clang-format
+
+# prevent Travis from overwriting our CXX variables
+before_install:
+    - eval "${MATRIX_EVAL}"
+
+script:
+    - mkdir build
+    - cd build
+    - cmake -DCLANG_FORMAT_SUFFIX=$CLANG_FORMAT_SUFFIX --config Release ..
+    - cmake --build . -- -j2

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.7.0)
+cmake_minimum_required (VERSION 3.2.0)
 project (DiscordRPC)
 
 include(GNUInstallDirs)
@@ -12,12 +12,13 @@ file(GLOB_RECURSE ALL_SOURCE_FILES
     src/*.cpp src/*.h src/*.c
 )
 
-find_program(CLANG_FORMAT_CMD clang-format)
+# Set CLANG_FORMAT_SUFFIX if you are using custom clang-format, e.g. clang-format-5.0
+find_program(CLANG_FORMAT_CMD clang-format${CLANG_FORMAT_SUFFIX})
 
 if (CLANG_FORMAT_CMD)
     add_custom_target(
         clangformat
-        COMMAND clang-format
+        COMMAND ${CLANG_FORMAT_CMD}
         -i -style=file -fallback-style=none
         ${ALL_SOURCE_FILES}
         DEPENDS

src/CMakeLists.txt

@@ -3,6 +3,8 @@ include_directories(${PROJECT_SOURCE_DIR}/include)
 option(ENABLE_IO_THREAD "Start up a separate I/O thread, otherwise I'd need to call an update function" ON)
 option(USE_STATIC_CRT "Use /MT[d] for dynamic library" OFF)
 
+set(CMAKE_CXX_STANDARD 14)
+
 set(BASE_RPC_SRC
     ${PROJECT_SOURCE_DIR}/include/discord-rpc.h
     discord-rpc.cpp
@@ -83,7 +85,6 @@ if(UNIX)
         -Wno-exit-time-destructors # not sure about these
         -Wno-global-constructors
     )
-    target_compile_options(discord-rpc PRIVATE $<$<COMPILE_LANGUAGE:CXX>:-std=c++14>)
 
     if (${BUILD_SHARED_LIBS})
         target_compile_options(discord-rpc PRIVATE -fPIC)