cmake: Dispaly APPEND_{CPP,C,CXX,LD}FLAGS in summary

CMakeLists.txt

@@ -640,15 +640,15 @@ endif()
 message("Cross compiling ....................... ${cross_status}")
 message("Preprocessor defined macros ........... ${definitions}")
 message("C compiler ............................ ${CMAKE_C_COMPILER_ID} ${CMAKE_C_COMPILER_VERSION}, ${CMAKE_C_COMPILER}")
-message("CFLAGS ................................ ${CMAKE_C_FLAGS}")
+message("CFLAGS ................................ ${CMAKE_C_FLAGS} ${APPEND_CPPFLAGS} ${APPEND_CFLAGS}")
 message("C++ compiler .......................... ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}, ${CMAKE_CXX_COMPILER}")
-message("CXXFLAGS .............................. ${CMAKE_CXX_FLAGS}")
+message("CXXFLAGS .............................. ${CMAKE_CXX_FLAGS} ${APPEND_CPPFLAGS} ${APPEND_CXXFLAGS}")
 get_target_interface(common_compile_options core_interface COMPILE_OPTIONS)
 message("Common compile options ................ ${common_compile_options}")
 get_target_interface(common_link_options core_interface LINK_OPTIONS)
 message("Common link options ................... ${common_link_options}")
-message("Linker flags for executables .......... ${CMAKE_EXE_LINKER_FLAGS}")
-message("Linker flags for shared libraries ..... ${CMAKE_SHARED_LINKER_FLAGS}")
+message("Linker flags for executables .......... ${CMAKE_EXE_LINKER_FLAGS} ${APPEND_LDFLAGS}")
+message("Linker flags for shared libraries ..... ${CMAKE_SHARED_LINKER_FLAGS} ${APPEND_LDFLAGS}")
 print_config_flags()
 message("Attempt to harden executables ......... ${HARDENING}")
 message("Treat compiler warnings as errors ..... ${WERROR}")