Working on Linux/Steam OS version

proj-linux/CMakeLists.txt

@@ -5,6 +5,8 @@ project(witcher001 LANGUAGES C CXX)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+option(STEAMSDK "Enable Steamworks SDK integration" OFF)
+
 # ===========================================
 # Поиск системных зависимостей Linux
 # ===========================================
@@ -166,8 +168,7 @@ target_include_directories(witcher001 PRIVATE
     ${LIBZIP_INCLUDE_DIRS}
     ${LUA_INCLUDE_DIRS}
     ${EIGEN3_INCLUDE_DIRS}
-    # sol2 - header-only, берем напрямую из thirdparty (если он там есть) 
-    # или можно установить системный libsol-dev и убрать этот путь
+    # sol2 - header-only, берем напрямую из thirdparty
     "${CMAKE_CURRENT_SOURCE_DIR}/../thirdparty/sol2-3.3.0/include"
 )
 
@@ -202,6 +203,80 @@ target_link_libraries(witcher001 PRIVATE
     pthread
 )
 
+# ===========================================
+# Интеграция Steamworks SDK (если STEAMSDK=ON)
+# ===========================================
+if(STEAMSDK)
+    message(STATUS "Steamworks SDK integration is ENABLED.")
+    
+    target_compile_definitions(witcher001 PRIVATE STEAMSDK)
+
+    set(STEAM_SDK_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../thirdparty/steamworks_sdk_164/sdk")
+
+    target_include_directories(witcher001 PRIVATE
+        "${STEAM_SDK_DIR}/public"
+        "${STEAM_SDK_DIR}/public/steam"
+    )
+
+    set(STEAM_LIB_DIR "${STEAM_SDK_DIR}/redistributable_bin/linux64")
+    set(STEAM_LIB_NAME "steam_api")
+    set(STEAM_SO_NAME "libsteam_api.so")
+
+    find_library(STEAM_LIBRARY
+        NAMES ${STEAM_LIB_NAME}
+        PATHS ${STEAM_LIB_DIR}
+        NO_DEFAULT_PATH
+    )
+
+    if(STEAM_LIBRARY)
+        target_link_libraries(witcher001 PRIVATE ${STEAM_LIBRARY})
+        message(STATUS "Found Steam API library: ${STEAM_LIBRARY}")
+    else()
+        message(FATAL_ERROR "Steam API library (${STEAM_LIB_NAME}) NOT found in ${STEAM_LIB_DIR}!")
+    endif()
+
+    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/steam_appid.txt" "4945840")
+else()
+    message(STATUS "Steamworks SDK integration is DISABLED.")
+endif()
+
+# ===========================================
+# Настройка RPATH и копирование динамических библиотек
+# ===========================================
+
+# Указываем линкеру искать .so файлы в той же папке, где лежит бинарник ($ORIGIN)
+set_target_properties(witcher001 PROPERTIES
+    INSTALL_RPATH "$ORIGIN"
+    BUILD_WITH_INSTALL_RPATH TRUE
+)
+
+# Поиск директорий, где лежат библиотеки
+get_filename_component(LUA_SO_DIR ${LUA_SO_PATH} DIRECTORY)
+get_filename_component(LIBZIP_SO_DIR ${LIBZIP_SO_PATH} DIRECTORY)
+
+add_custom_command(TARGET witcher001 POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E echo "Copying shared libraries with sonames..."
+    # Копируем библиотеки и все их симлинки (cp -P сохраняет структуру симлинков)
+    COMMAND sh -c "cp -P ${LUA_SO_DIR}/liblua5.4.so* '$<TARGET_FILE_DIR:witcher001>/'"
+    COMMAND sh -c "cp -P ${LIBZIP_SO_DIR}/libzip.so* '$<TARGET_FILE_DIR:witcher001>/'"
+)
+
+# Если включен Steam, копируем libsteam_api.so и steam_appid.txt
+if(STEAMSDK)
+    add_custom_command(TARGET witcher001 POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E echo "Copying Steam SDK components..."
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            "${STEAM_LIB_DIR}/${STEAM_SO_NAME}"
+            "$<TARGET_FILE_DIR:witcher001>/${STEAM_SO_NAME}"
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            "${CMAKE_CURRENT_BINARY_DIR}/steam_appid.txt"
+            "$<TARGET_FILE_DIR:witcher001>/steam_appid.txt"
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            "${CMAKE_CURRENT_BINARY_DIR}/steam_appid.txt"
+            "${CMAKE_BINARY_DIR}/steam_appid.txt"
+    )
+endif()
+
 # ===========================================
 # Копирование ресурсов после сборки
 # ===========================================
@@ -210,8 +285,6 @@ set(RUNTIME_RESOURCE_DIRS
     "audio"
 )
 
-# В Linux (при использовании Make/Ninja) бинарник обычно создается в CMAKE_BINARY_DIR.
-# Копируем ресурсы рядом с исполняемым файлом.
 foreach(resdir IN LISTS RUNTIME_RESOURCE_DIRS)
     add_custom_command(TARGET witcher001 POST_BUILD
         COMMAND ${CMAKE_COMMAND} -E echo "Copying ${resdir} to binary dir..."