[cmake] switch to c++14

Author: simogasp

CMakeLists.txt

@@ -65,9 +65,10 @@ if(MSVC AND CMAKE_GENERATOR MATCHES "Ninja")
   list(APPEND CUDA_NVCC_FLAGS   -Xcompiler ${CCTAG_MVSC_LINKER})
 endif()
 
-set(CMAKE_CXX_STANDARD 11)
+set(CCTAG_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD ${CCTAG_CXX_STANDARD})
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CUDA_STANDARD 11)
+set(CMAKE_CUDA_STANDARD ${CCTAG_CXX_STANDARD})
 set(CMAKE_CUDA_STANDARD_REQUIRED ON)
 
 
@@ -186,7 +187,7 @@ if(CCTAG_WITH_CUDA)
   LIST(APPEND CUDA_NVCC_FLAGS ${ARCH_FLAGS})
 
   if(NOT MSVC)
-    set(CUDA_NVCC_FLAGS         "${CUDA_NVCC_FLAGS};-std=c++11")
+    set(CUDA_NVCC_FLAGS         "${CUDA_NVCC_FLAGS};-std=c++${CCTAG_CXX_STANDARD}")
   endif()
   set(CUDA_NVCC_FLAGS         "${CUDA_NVCC_FLAGS};--default-stream;per-thread")
 

src/applications/CMakeLists.txt

@@ -5,6 +5,9 @@ if(NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
   include(GNUInstallDirs)
   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
   set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+
+  set(CMAKE_CXX_STANDARD 14)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
 
 # if this is used as a stand-alone project we need to tell whether to use PIC
@@ -62,10 +65,6 @@ else()
   message(STATUS "TBB already there")
 endif()
 
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
-
 set(CCTagRegression_cpp
   ./regression/main.cpp
   ./regression/TestLog.cpp