Add S7Comm plugin for Siemens S7 protocol support

core/src/drivers/plugins/native/s7comm/CMakeLists.txt

@@ -0,0 +1,151 @@
+# CMakeLists.txt for S7Comm Plugin
+# Builds a self-contained S7Comm plugin with Snap7 library included
+
+cmake_minimum_required(VERSION 3.10)
+project(s7comm_plugin CXX C)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+# Determine OpenPLC root directory for finding common headers
+# When building standalone: calculate from plugin location
+# When building from main project: pass -DOPENPLC_ROOT=<path>
+if(NOT DEFINED OPENPLC_ROOT)
+    get_filename_component(OPENPLC_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../" ABSOLUTE)
+endif()
+
+message(STATUS "S7Comm Plugin - OpenPLC root: ${OPENPLC_ROOT}")
+
+# =============================================================================
+# Snap7 Source Files
+# =============================================================================
+
+set(SNAP7_CORE_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_server.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_isotcp.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_peer.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_text.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_client.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_micro_client.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core/s7_partner.cpp
+)
+
+set(SNAP7_SYS_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/sys/snap_msgsock.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/sys/snap_tcpsrvr.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/sys/snap_threads.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/sys/snap_sysutils.cpp
+)
+
+set(SNAP7_LIB_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/lib/snap7_libmain.cpp
+)
+
+# =============================================================================
+# cJSON Library (embedded for JSON configuration parsing)
+# =============================================================================
+
+set(CJSON_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/cjson/cJSON.c
+)
+
+# =============================================================================
+# Plugin Source Files
+# =============================================================================
+
+set(PLUGIN_SOURCES
+    ${CMAKE_CURRENT_SOURCE_DIR}/s7comm_plugin.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/s7comm_config.c
+    ${OPENPLC_ROOT}/core/src/drivers/plugins/native/plugin_logger.c
+)
+
+# =============================================================================
+# Include Directories
+# =============================================================================
+
+include_directories(
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/core
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/sys
+    ${CMAKE_CURRENT_SOURCE_DIR}/snap7/lib
+    ${CMAKE_CURRENT_SOURCE_DIR}/cjson
+    ${OPENPLC_ROOT}/core/src/drivers
+    ${OPENPLC_ROOT}/core/src/drivers/plugins/native
+    ${OPENPLC_ROOT}/core/src/lib
+)
+
+# =============================================================================
+# Create Shared Library
+# =============================================================================
+
+add_library(s7comm_plugin SHARED
+    ${SNAP7_CORE_SOURCES}
+    ${SNAP7_SYS_SOURCES}
+    ${SNAP7_LIB_SOURCES}
+    ${CJSON_SOURCES}
+    ${PLUGIN_SOURCES}
+)
+
+# =============================================================================
+# Compiler Definitions
+# =============================================================================
+
+target_compile_definitions(s7comm_plugin PRIVATE
+    # Snap7 definitions
+    $<$<NOT:$<PLATFORM_ID:Windows>>:OS_UNIX>
+)
+
+# =============================================================================
+# Compiler Options
+# =============================================================================
+
+target_compile_options(s7comm_plugin PRIVATE
+    -fPIC
+    # Suppress Snap7 warnings (it's third-party code)
+    -Wno-unused-parameter
+    -Wno-sign-compare
+    -Wno-deprecated-declarations
+    # C++-only warning flags (only apply to C++ files)
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:GNU>>:-Wno-class-memaccess>
+    $<$<AND:$<COMPILE_LANGUAGE:CXX>,$<CXX_COMPILER_ID:Clang>>:-Wno-macro-redefined>
+)
+
+# =============================================================================
+# Link Libraries
+# =============================================================================
+
+target_link_libraries(s7comm_plugin PRIVATE
+    pthread
+    ${CMAKE_DL_LIBS}
+)
+
+# Platform-specific libraries
+if(UNIX AND NOT APPLE)
+    # Linux requires librt for clock functions
+    target_link_libraries(s7comm_plugin PRIVATE rt)
+endif()
+
+# =============================================================================
+# Output Settings
+# =============================================================================
+
+set_target_properties(s7comm_plugin PROPERTIES
+    LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/plugins
+    PREFIX "lib"
+    OUTPUT_NAME "s7comm_plugin"
+)
+
+# On Linux, use .so extension
+if(UNIX)
+    set_target_properties(s7comm_plugin PROPERTIES SUFFIX ".so")
+endif()
+
+# =============================================================================
+# Install Target
+# =============================================================================
+
+install(TARGETS s7comm_plugin
+    LIBRARY DESTINATION lib/openplc/plugins
+    RUNTIME DESTINATION lib/openplc/plugins
+)