[SDK 885] C++ targer vesion in creased to 14 (#75)

* change log added
c++ target version updated to 14

* readme.md updated

Co-authored-by: ArtursKadikis <[email protected]>

Author: ZahidZafar

CHANGELOG.md

@@ -1,6 +1,7 @@
 22.06.0
 * !! Major breaking change !! We are adding the 'cly' namespace on 'Countly' class which will change how that class can be referenced. 'Countly::' will not work, you will have to use 'cly::Countly::' instead.
 * !! Major breaking change !! We are extracting the 'Event' class out of the 'Countly' class which will change how that class can be referenced. 'Countly::Event' will not work, you will have to use 'cly::Event' instead.
+* !! Major breaking change !! Increased the compiler version required to compile the SDK. It's increased from version C++11 to C++14.
 
 22.02.0
 * Added 10-second time-outs for all windows HTTP transactions.

CMakeLists.txt

@@ -29,7 +29,7 @@ target_include_directories(countly
   PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src)
 
 set_target_properties(countly PROPERTIES
-    CXX_STANDARD 11
+    CXX_STANDARD 14
     CXX_STANDARD_REQUIRED YES
     CXX_EXTENSIONS NO)
 
@@ -81,7 +81,7 @@ if(COUNTLY_BUILD_TESTS)
   target_include_directories(countly-tests PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/vendor/json/include)
   target_link_libraries(countly-tests countly)
   set_target_properties(countly-tests PROPERTIES
-    CXX_STANDARD 11
+    CXX_STANDARD 14
     CXX_STANDARD_REQUIRED YES
     CXX_EXTENSIONS NO)
 endif()
@@ -97,7 +97,7 @@ if(COUNTLY_BUILD_SAMPLE)
   target_include_directories(countly-sample PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/vendor/json/include)
   target_link_libraries(countly-sample countly)
   set_target_properties(countly-sample PROPERTIES
-    CXX_STANDARD 11
+    CXX_STANDARD 14
     CXX_STANDARD_REQUIRED YES
     CXX_EXTENSIONS NO)
 endif()

README.md

@@ -26,7 +26,7 @@ Security is very important to us. If you discover any issue regarding security,
 Countly C++ SDK has been designed to work with very few dependencies in order to be available on most platforms.
 In order to build this SDK, you need:
 
-- a C++ compiler with C++11 support
+- a C++ compiler with C++14 support
 - libcurl (with openssl) and its headers if you are on *nix
 - cmake >= 3.13