cmake-projekt

- A cmake projektfájl.
- CMake-nek szüksége van a `bicikli.h'-ra, úgyhogy adunk egy üres fájl
  neki.
- `override' a destruktorra.

CMakeLists.txt

+# lab_06 project
+#
+# Originally created: 2023-04-13.
+#
+# CMakeLists.txt --
+#   CMake file a lab_06 projekt fordításához.
+#   Használat:
+#       - parancssor: cmake -B _build -S . && cmake --build _build
+#       - CLion/Visual Studio: Megnyitni a mappát projektként
+cmake_minimum_required(VERSION 3.18) # Debian Bullseye
+
+include(CheckCXXCompilerFlag)
+
+project(cpp_lab_06
+        VERSION 1.0.0
+        LANGUAGES CXX)
+
+add_library(memtrace STATIC
+            bicikli/memtrace.cpp bicikli/memtrace.h)
+target_compile_features(memtrace PRIVATE cxx_std_98)
+target_compile_definitions(memtrace PUBLIC MEMTRACE)
+
+add_executable(bicikli
+               bicikli/bicikli.h
+               bicikli/bicikli_teszt0.cpp
+               bicikli/gtest_lite.h
+               )
+
+target_compile_features(bicikli PRIVATE cxx_std_11)
+set_target_properties(bicikli PROPERTIES CXX_EXTENSIONS OFF)
+target_link_libraries(bicikli PRIVATE memtrace)
+target_compile_options(bicikli PRIVATE
+                       $<$<CXX_COMPILER_ID:GNU,Clang,AppleClang>:-Werror>
+                       $<$<CXX_COMPILER_ID:MSVC>:/WX>)
+
+## CheckWarningFlag(OptionName CacheName) --
+#     Ellenőrzi, hogy az használt fordító érti-e a kapott parancssori kapcsolót.
+function(check_warning_flag OptionName CacheName)
+    if (OptionName MATCHES [[^/]])
+        set(WarningPrefix "")
+    else ()
+        set(WarningPrefix "-W")
+    endif ()
+    check_cxx_compiler_flag("${WarningPrefix}${OptionName}" "HasWarning_${CacheName}")
+    set("HAS_WARNING_${CacheName}" ${HasWarning_${CacheName}} PARENT_SCOPE)
+endfunction()
+
+## generate_warnings(&Target) --
+#     Beállít hibakapcsolókat a kapott target-en.
+function(generate_warnings _Target)
+    set(gw_known_warnings
+        # GCC/Clang
+        extra pedantic error=vla error=non-virtual-dtor
+        parentheses logical-op reorder no-c++98-compat
+        no-reserved-macro-identifier no-unused-macros no-float-equal
+        no-zero-as-null-pointer-constant no-global-constructors
+        no-exit-time-destructors no-unsafe-buffer-usage
+        no-reserved-identifier # _Is_...
+        no-old-style-cast      # gtest_lite
+        no-shadow-field-in-constructor # gtest_lite
+        no-shorten-64-to-32    # gtest_lite
+        # MSVC
+        # conditional expression is constant (nem szereti az ELKESZULT) markot
+        /wd4127
+        # 'function': member function does not override any base class virtual member function
+        /we4263
+        # 'class': class has virtual functions, but destructor is not virtual
+        /we4265
+        # 'identifier': illegal qualified name in member declaration
+        /we4596
+        # 'symbol': exception specification does not match previous declaration
+        /we4986
+        4
+        /permissive-
+        /diagnostics:caret
+        )
+    # MSVC /Wall == clang -Weverything, arra nincs szükségünk
+    set(gw_found_warnings $<$<CXX_COMPILER_ID:GNU,Clang,AppleClang>:-Wall>)
+
+    foreach (warn IN LISTS gw_known_warnings)
+        string(MAKE_C_IDENTIFIER "${warn}" CacheName)
+        check_warning_flag("${warn}" ${CacheName})
+        if (HAS_WARNING_${CacheName})
+            if (warn MATCHES [[^/]])
+                set(WarningPrefix "")
+            else ()
+                set(WarningPrefix "-W")
+            endif ()
+            list(APPEND gw_found_warnings "${WarningPrefix}${warn}")
+        endif ()
+    endforeach ()
+
+    target_compile_options("${_Target}" PUBLIC ${gw_found_warnings})
+endfunction()
+
+generate_warnings(bicikli)

bicikli/bicikli.h

+/**
+ * \file bicikli.h
+ *
+ *   A jármű osztályhierarchiát ebbe a fájlba valósítsa meg.
+ */

bicikli/bicikli_teszt0.cpp

@@ -15,7 +15,7 @@ struct MyKerek : Kerek {
         std::cout << "\tMyKerek ctor ";
         std::cout << "\tMyKerek ctor ";
         kiir();
         kiir();
     }
     }
-    ~MyKerek() {
+    ~MyKerek() override {
         std::cout << "\tMyKerek dtor ";
         std::cout << "\tMyKerek dtor ";
         kiir();
         kiir();
     }
     }