Bump the minimum required C++ Standard to 14 (#1821)

* Bump minimal C++ Standard to C++14.

* Fix comment

Author: Dimi1010

CMakeLists.txt

@@ -146,9 +146,9 @@ option(PCAPPP_USE_XDP "Setup PcapPlusPlus with XDP")
 option(PCAPPP_INSTALL "Install Pcap++" ${PCAPPP_MAIN_PROJECT})
 option(PCAPPP_PACKAGE "Package Pcap++ could require a recent version of CMake" OFF)
 
-# Set C++11 if not defined
+# Set C++14 if not defined
 if(NOT DEFINED CMAKE_CXX_STANDARD)
-  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD 14)
   set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()
 

Common++/CMakeLists.txt

@@ -34,7 +34,7 @@ set(
 # Set the public header that will be installed
 set_property(TARGET Common++ PROPERTY PUBLIC_HEADER ${public_headers})
 
-target_compile_features(Common++ PUBLIC cxx_std_11)
+target_compile_features(Common++ PUBLIC cxx_std_14)
 
 target_include_directories(
   Common++

Examples/CMakeLists.txt

@@ -4,8 +4,8 @@ project(PcapPlusPlusExamples)
 
 set(CMAKE_PROJECT_HOMEPAGE_URL "https://pcapplusplus.github.io/")
 
-# Set C++11
-set(CMAKE_CXX_STANDARD 11)
+# Set C++14
+set(CMAKE_CXX_STANDARD 14)
 # popen()/pclose() are not C++ standards
 set(CMAKE_CXX_EXTENSIONS ON)
 

Packet++/CMakeLists.txt

@@ -145,7 +145,7 @@ set(
 # Don't use set_target_properties CMake limit to 50 elements
 set_property(TARGET Packet++ PROPERTY PUBLIC_HEADER ${public_headers})
 
-target_compile_features(Packet++ PUBLIC cxx_std_11)
+target_compile_features(Packet++ PUBLIC cxx_std_14)
 
 target_include_directories(
   Packet++

Pcap++/CMakeLists.txt

@@ -64,7 +64,7 @@ endif()
 
 set_property(TARGET Pcap++ PROPERTY PUBLIC_HEADER ${public_headers})
 
-target_compile_features(Pcap++ PUBLIC cxx_std_11)
+target_compile_features(Pcap++ PUBLIC cxx_std_14)
 
 if(APPLE)
   target_link_libraries(Pcap++ PRIVATE "-framework CoreFoundation" "-framework SystemConfiguration")