[DO NOT MERGE] NuttX cmake

.gitignore

@@ -30,3 +30,4 @@ core
 /.project
 /pcode
 /tags
+build/

.vscode/.gitignore

@@ -0,0 +1,6 @@
+.cortex-debug.peripherals.state.json
+.cortex-debug.registers.state.json
+compile_commands.json
+
+# C/C++ extension does some local caching in this folder
+ipch/

.vscode/c_cpp_properties.json

@@ -0,0 +1,22 @@
+{
+    "configurations": [
+        {
+            "name": "Linux",
+            "intelliSenseMode": "gcc-x64",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [],
+            "browse": {
+                "path": [
+                    "${workspaceFolder}/include/",
+                    "."
+                ],
+                "limitSymbolsToIncludedHeaders": true
+            },
+            "compileCommands": "${workspaceFolder}/.vscode/compile_commands.json",
+            "configurationProvider": "vector-of-bool.cmake-tools"
+        }
+    ],
+    "version": 4
+}

.vscode/cmake-kits.json

@@ -0,0 +1,5 @@
+[
+	{
+		"name": "detect"
+	}
+]

.vscode/cmake-variants.yaml

@@ -0,0 +1,8 @@
+CONFIG:
+  default: stm32f4discovery/nsh
+  choices:
+    stm32f4discovery/nsh:
+      short: stm32f4discovery/nsh
+      buildType: MinSizeRel
+      settings:
+        CONFIG: stm32f4discovery/nsh

.vscode/extensions.json

@@ -0,0 +1,16 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "chiehyu.vscode-astyle",
+        "dan-c-underwood.arm",
+        "github.vscode-pull-request-github",
+        "marus25.cortex-debug",
+        "ms-azuretools.vscode-docker",
+        "ms-python.python",
+        "ms-vscode.cpptools",
+        "twxs.cmake",
+        "vector-of-bool.cmake-tools",
+        "zixuanwang.linkerscript"
+    ]
+}

.vscode/launch.json

@@ -0,0 +1,51 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug STM32F427 (jlink)",
+            "device": "STM32F427VI",
+            "svdFile": "${workspaceRoot}/../cmsis-svd/data/STMicro/STM32F427.svd",
+            "executable": "${command:cmake.launchTargetPath}",
+            "request": "launch",
+            "type": "cortex-debug",
+            "servertype": "jlink",
+            "interface": "swd",
+            "cwd": "${workspaceRoot}",
+            "internalConsoleOptions": "openOnSessionStart",
+            "preLaunchCommands": [
+                "set mem inaccessible-by-default off",
+                "set print pretty",
+            ]
+        },
+        {
+            "name": "Debug STM32F7x5 (jlink)",
+            "device": "STM32F765VI",
+            "svdFile": "${workspaceRoot}/../cmsis-svd/data/STMicro/STM32F7x5.svd",
+            "executable": "${command:cmake.launchTargetPath}",
+            "request": "launch",
+            "type": "cortex-debug",
+            "servertype": "jlink",
+            "interface": "swd",
+            "internalConsoleOptions": "openOnSessionStart",
+            "preLaunchCommands": [
+                "set mem inaccessible-by-default off",
+                "set print pretty",
+            ]
+        },
+        {
+            "name": "Debug STM32F7x7 (jlink)",
+            "device": "STM32F777NI",
+            "svdFile": "${workspaceRoot}/../cmsis-svd/data/STMicro/STM32F7x7.svd",
+            "executable": "${command:cmake.launchTargetPath}",
+            "request": "launch",
+            "type": "cortex-debug",
+            "servertype": "jlink",
+            "interface": "swd",
+            "internalConsoleOptions": "openOnSessionStart",
+            "preLaunchCommands": [
+                "set mem inaccessible-by-default off",
+                "set print pretty",
+            ]
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,49 @@
+{
+        "astyle.c.enable": true,
+        "astyle.cpp.enable": true,
+        "breadcrumbs.enabled": true,
+        "cmake.autoRestartBuild": true,
+        "cmake.buildDirectory": "${workspaceFolder}/build/${variant:CONFIG}",
+        "cmake.buildBeforeRun": true,
+        "cmake.configureOnOpen": true,
+        "cmake.copyCompileCommands": "${workspaceFolder}/.vscode/compile_commands.json",
+        "cortex-debug.enableTelemetry": false,
+        "C_Cpp.clang_format_fallbackStyle": "none",
+        "C_Cpp.configurationWarnings": "Disabled",
+        "C_Cpp.default.cppStandard": "c++11",
+        "C_Cpp.default.cStandard": "c89",
+        "C_Cpp.default.intelliSenseMode": "gcc-x64",
+        "C_Cpp.errorSquiggles": "Disabled",
+        "C_Cpp.formatting": "Disabled",
+        "C_Cpp.intelliSenseEngine": "Default",
+        "C_Cpp.intelliSenseEngineFallback": "Disabled",
+        "debug.toolBarLocation": "docked",
+        "editor.dragAndDrop": false,
+        "editor.insertSpaces": false,
+        "editor.minimap.maxColumn": 120,
+        "editor.minimap.renderCharacters": false,
+        "editor.minimap.showSlider": "always",
+        "editor.smoothScrolling": true,
+        "editor.suggest.localityBonus": true,
+        "editor.tabSize": 8,
+        "editor.wordWrapColumn": 120,
+        "explorer.openEditors.visible": 0,
+        "files.insertFinalNewline": true,
+        "files.trimTrailingWhitespace": true,
+        "files.watcherExclude": {
+                "**/build/*": true
+        },
+        "githubPullRequests.defaultMergeMethod": "squash",
+        "githubPullRequests.telemetry.enabled": false,
+        "gitlens.advanced.telemetry.enabled": false,
+        "search.exclude": {
+                "build/**": true
+        },
+        "search.showLineNumbers": true,
+        "telemetry.enableTelemetry": false,
+        "window.title": "${dirty} ${activeEditorMedium}${separator}${rootName}",
+        "workbench.editor.highlightModifiedTabs": true,
+        "workbench.enableExperiments": false,
+        "workbench.settings.enableNaturalLanguageSearch": false,
+        "workbench.statusBar.feedback.visible": false
+}

CMakeLists.txt

@@ -0,0 +1,208 @@
+cmake_minimum_required(VERSION 3.2)
+
+string(REPLACE "/" ";" BOARD_CONFIG ${CONFIG})
+list(GET BOARD_CONFIG 0 NUTTX_BOARD)
+list(GET BOARD_CONFIG 1 NUTTX_CONFIG)
+
+message(STATUS "NuttX: ${NUTTX_BOARD}/${NUTTX_CONFIG}")
+message(STATUS "NuttX board: ${NUTTX_BOARD}")
+message(STATUS "NuttX config: ${NUTTX_CONFIG}")
+
+# CMake build type (Debug Release RelWithDebInfo MinSizeRel Coverage)
+if(NOT CMAKE_BUILD_TYPE)
+	set(CMAKE_BUILD_TYPE "MinSizeRel" CACHE STRING "Build type" FORCE)
+endif()
+set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug;Release;RelWithDebInfo;MinSizeRel")
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+set(NUTTX_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+
+# must be done early to bring all CONFIG variables into cmake
+include(defconfig)
+
+# TODO: generalize like in arch/arm/src/armv7-m/Toolchain.defs
+if("${CONFIG_ARCH_CORTEXM0}" STREQUAL "y")
+	set(CMAKE_SYSTEM_PROCESSOR cortex-m0)
+elseif("${CONFIG_ARCH_CORTEXM3}" STREQUAL "y")
+	set(CMAKE_SYSTEM_PROCESSOR cortex-m3)
+elseif("${CONFIG_ARCH_CORTEXM4}" STREQUAL "y")
+	set(CMAKE_SYSTEM_PROCESSOR cortex-m4)
+elseif("${CONFIG_ARCH_CORTEXM7}" STREQUAL "y")
+	set(CMAKE_SYSTEM_PROCESSOR cortex-m7)
+else()
+	message(FATAL_ERROR "processor not set")
+endif()
+
+set(CMAKE_TOOLCHAIN_FILE Toolchain-arm-none-eabi)
+
+project(NuttX LANGUAGES ASM C CXX)
+
+include(ccache)
+include(nuttx_add_library)
+include(set_parent_srcs)
+
+#=============================================================================
+
+# .version
+add_custom_command(
+	OUTPUT ${CMAKE_BINARY_DIR}/.version
+	COMMAND tools/version.sh -v 0.0 -b 0 ${CMAKE_BINARY_DIR}/.version
+	DEPENDS ${NUTTX_DIR}/configs/${NUTTX_BOARD}/${NUTTX_CONFIG}/defconfig
+	WORKING_DIRECTORY ${NUTTX_DIR}
+	)
+
+#=============================================================================
+# mkconfig & mkversion
+include(ExternalProject)
+ExternalProject_Add(nuttx_host_tools
+	SOURCE_DIR ${CMAKE_SOURCE_DIR}/tools
+	INSTALL_DIR ${CMAKE_BINARY_DIR}
+	CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR}
+	USES_TERMINAL_CONFIGURE true
+	USES_TERMINAL_BUILD true
+	USES_TERMINAL_INSTALL true
+	)
+
+# mkconfig and mkversion
+add_custom_command(
+	OUTPUT
+		${CMAKE_BINARY_DIR}/include/nuttx/config.h
+		${CMAKE_BINARY_DIR}/include/nuttx/version.h
+	COMMAND
+		${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/include/nuttx
+	COMMAND
+		${CMAKE_BINARY_DIR}/bin/mkconfig ${CMAKE_BINARY_DIR} > ${CMAKE_BINARY_DIR}/include/nuttx/config.h
+	COMMAND
+		${CMAKE_BINARY_DIR}/bin/mkversion ${CMAKE_BINARY_DIR} > ${CMAKE_BINARY_DIR}/include/nuttx/version.h
+	DEPENDS
+		nuttx_host_tools
+		${CMAKE_BINARY_DIR}/.config
+		${CMAKE_BINARY_DIR}/.version
+	WORKING_DIRECTORY ${NUTTX_DIR}
+	)
+
+#=============================================================================
+# symlinks (TODO: move to build directory)
+add_custom_command(
+	OUTPUT nuttx_symlinks.stamp
+	#COMMAND ${CMAKE_COMMAND} -E remove
+			#${NUTTX_DIR}/include/arch
+			#${NUTTX_DIR}/arch/${CONFIG_ARCH}/include/board
+			#${NUTTX_DIR}/arch/${CONFIG_ARCH}/include/chip
+			#${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/board
+			#${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/chip
+
+	#COMMAND ${CMAKE_COMMAND} -E create_symlink ${NUTTX_DIR}/arch/${CONFIG_ARCH}/include			${NUTTX_DIR}/include/arch			# include/arch
+	#COMMAND ${CMAKE_COMMAND} -E create_symlink ${NUTTX_DIR}/configs/${NUTTX_BOARD}/include			${NUTTX_DIR}/arch/${CONFIG_ARCH}/include/board	# arch/arm/include/board
+	#COMMAND ${CMAKE_COMMAND} -E create_symlink ${NUTTX_DIR}/arch/${CONFIG_ARCH}/include/${CONFIG_ARCH_CHIP}	${NUTTX_DIR}/arch/${CONFIG_ARCH}/include/chip	# arch/arm/include/chip
+	#COMMAND ${CMAKE_COMMAND} -E create_symlink ${NUTTX_DIR}/configs/${NUTTX_BOARD}/src			${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/board	# arch/arm/src/board
+	#COMMAND ${CMAKE_COMMAND} -E create_symlink ${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/${CONFIG_ARCH_CHIP}	${NUTTX_DIR}/arch/${CONFIG_ARCH}/src/chip	# arch/arm/src/chip
+
+	COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/include
+
+	COMMAND ${CMAKE_COMMAND} -E copy_directory ${NUTTX_DIR}/arch/${CONFIG_ARCH}/include			${CMAKE_BINARY_DIR}/include/arch
+	COMMAND ${CMAKE_COMMAND} -E copy_directory ${NUTTX_DIR}/configs/${NUTTX_BOARD}/include				${CMAKE_BINARY_DIR}/include/arch/board	# include/arch/board
+	COMMAND ${CMAKE_COMMAND} -E copy_directory ${NUTTX_DIR}/arch/${CONFIG_ARCH}/include/${CONFIG_ARCH_CHIP}		${CMAKE_BINARY_DIR}/include/arch/chip	# include/arch/chip
+
+	COMMAND ${CMAKE_COMMAND} -E touch nuttx_symlinks.stamp
+	DEPENDS
+		${CMAKE_BINARY_DIR}/.config
+)
+
+
+add_custom_target(nuttx_context
+	DEPENDS
+		nuttx_symlinks.stamp
+		${CMAKE_BINARY_DIR}/include/nuttx/config.h
+		${CMAKE_BINARY_DIR}/include/nuttx/version.h
+)
+
+#=============================================================================
+# compiler options
+
+if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
+	if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 4.9)
+		# force color for gcc > 4.9
+		add_compile_options(-fdiagnostics-color=always)
+	endif()
+endif()
+
+add_compile_options(
+	-fno-builtin
+	-fno-strength-reduce
+	-fno-strict-aliasing
+
+	-fomit-frame-pointer
+
+	-Wno-cpp
+	)
+
+#=============================================================================
+# create NuttX executable
+#add_library(nuttx empty.c)
+add_executable(nuttx empty.c)
+
+#=============================================================================
+# add all subdirectories
+
+include_directories(include)
+include_directories(${CMAKE_BINARY_DIR}/include)
+
+include_directories(sched) # TODO: use target dependencies for linking
+
+add_definitions("-D__KERNEL")
+
+add_subdirectory(arch)
+add_subdirectory(audio)
+add_subdirectory(binfmt)
+add_subdirectory(configs)
+add_subdirectory(drivers)
+add_subdirectory(fs)
+add_subdirectory(graphics)
+add_subdirectory(libs)
+add_subdirectory(mm)
+add_subdirectory(net)
+add_subdirectory(sched)
+add_subdirectory(wireless)
+
+#=============================================================================
+# NuttX Apps
+if(CONFIG_APPS_DIR)
+	add_subdirectory(${CONFIG_APPS_DIR} apps)
+endif()
+
+#=============================================================================
+# link final binary
+get_property(nuttx_app_libs GLOBAL PROPERTY NUTTX_APP_LIBS)
+get_property(nuttx_libs GLOBAL PROPERTY NUTTX_LIBRARIES)
+
+set(LD_SCRIPT "${NUTTX_DIR}/configs/${NUTTX_BOARD}/scripts/ld.script")
+
+if(NOT EXISTS ${LD_SCRIPT})
+	set(LD_SCRIPT "${NUTTX_DIR}/configs/${NUTTX_BOARD}/scripts/flash.ld")
+endif()
+
+target_link_libraries(nuttx PRIVATE
+
+	--entry=__start
+
+	-nostartfiles
+	-nodefaultlibs
+
+	-Wl,--script=${LD_SCRIPT}
+	#-Wl,-Map=${PX4_CONFIG}.map
+	#-Wl,--warn-common
+	#-Wl,--gc-sections
+
+	-Wl,--start-group
+		${nuttx_libs}
+		${nuttx_app_libs}
+	-Wl,--end-group
+
+	gcc
+)