added hal folder

hal/CMakeLists.txt

@@ -0,0 +1,89 @@
+cmake_minimum_required(VERSION 3.13)
+
+# Can also be changed by upper CMakeLists.txt file
+find_library(LIB_FSFW_NAME fsfw REQUIRED)
+
+option(FSFW_HAL_ADD_LINUX "Add the Linux HAL to the sources. Required gpiod library" OFF)
+option(FSFW_HAL_ADD_RASPBERRY_PI "Add Raspberry Pi specific code to the sources" OFF)
+
+option(FSFW_HAL_ADD_STM32H7 "Add the STM32H7 HAL to the sources" OFF)
+
+option(FSFW_HAL_WARNING_SHADOW_LOCAL_GCC "Enable -Wshadow=local warning in GCC" ON)
+
+set(LIB_FSFW_HAL_NAME fsfw_hal)
+set(LINUX_HAL_PATH_NAME linux)
+set(STM32H7_PATH_NAME stm32h7)
+
+add_library(${LIB_FSFW_HAL_NAME})
+
+if(NOT LIB_FSFW_NAME)
+    message(ERROR "LIB_FSFW_NAME needs to be set as a linkable target")
+endif()
+
+add_subdirectory(devicehandlers)
+add_subdirectory(common)
+
+if(FSFW_HAL_ADD_LINUX)
+    add_subdirectory(${LINUX_HAL_PATH_NAME})
+endif()
+
+if(FSFW_HAL_ADD_STM32H7)
+    add_subdirectory(${STM32H7_PATH_NAME})
+endif()
+
+target_link_libraries(${LIB_FSFW_HAL_NAME} PRIVATE
+    ${LIB_FSFW_NAME}
+)
+
+foreach(INCLUDE_PATH ${FSFW_HAL_ADDITIONAL_INC_PATHS})
+    if(IS_ABSOLUTE ${INCLUDE_PATH})
+        set(CURR_ABS_INC_PATH "${INCLUDE_PATH}")
+    else()
+        get_filename_component(CURR_ABS_INC_PATH
+            ${INCLUDE_PATH} REALPATH BASE_DIR ${CMAKE_SOURCE_DIR})
+    endif()
+
+    if(CMAKE_VERBOSE)
+        message(STATUS "FSFW include path: ${CURR_ABS_INC_PATH}")
+    endif()
+
+    list(APPEND FSFW_HAL_ADD_INC_PATHS_ABS ${CURR_ABS_INC_PATH})
+endforeach()
+
+target_include_directories(${LIB_FSFW_HAL_NAME} PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${FSFW_HAL_ADD_INC_PATHS_ABS}
+)
+
+target_compile_definitions(${LIB_FSFW_HAL_NAME} PRIVATE
+    ${FSFW_HAL_DEFINES}
+)
+
+target_link_libraries(${LIB_FSFW_HAL_NAME} PRIVATE
+    ${FSFW_HAL_LINK_LIBS}
+)
+
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    if(NOT DEFINED FSFW_WARNING_FLAGS)
+	   set(FSFW_WARNING_FLAGS
+		  -Wall
+		  -Wextra
+		  -Wimplicit-fallthrough=1
+		  -Wno-unused-parameter
+        )
+    endif()
+
+	target_compile_options(${LIB_FSFW_NAME} PRIVATE
+		"-ffunction-sections"
+		"-fdata-sections"
+	)
+
+	target_link_options(${LIB_FSFW_NAME} PRIVATE
+		"Wl,--gc-sections"
+ 	)
+
+    if(FSFW_HAL_WARNING_SHADOW_LOCAL_GCC)
+        list(APPEND WARNING_FLAGS "-Wshadow=local")
+    endif()
+
+endif()