Use CMAKE_TOOLCHAIN_FILE if provided

.gitignore

@@ -40,3 +40,4 @@ venv/
 ENV/
 env.bak/
 venv.bak/
+example/arm-none-eabi/.vs

conan_provider.cmake

@@ -425,6 +425,13 @@ function(detect_host_profile output_file)
     string(APPEND profile "[conf]\n")
     string(APPEND profile "tools.cmake.cmaketoolchain:generator=${CMAKE_GENERATOR}\n")
 
+    # if a custom cmake toolchain was specified use it
+    if(CMAKE_TOOLCHAIN_FILE)
+      # pass cmake toolchain file to conan
+      string(APPEND profile "tools.cmake.cmaketoolchain:toolchain_file=${CMAKE_TOOLCHAIN_FILE}\n")
+    endif()
+
+
     # propagate compilers via profile
     append_compiler_executables_configuration()
 

example/arm-none-eabi/CMakeLists.txt

@@ -0,0 +1,61 @@
+
+cmake_minimum_required (VERSION 3.30)
+
+
+
+project ("arm-none-eabi")
+
+set(EXE_NAME arm_none_eabi_test)
+
+set(CMAKE_EXECUTABLE_SUFFIX ".elf")
+set(EXE_SOURCES "main.c" "syscall_wrapper.h" "syscall_wrapper.c" "fmt_dummy.h" "fmt_dummy.cpp")
+
+list(APPEND EXE_SOURCES "startup_stm32f429xx.s")
+# Cmake does not seam to recognise *.s files as ASM. Tell Cmake the language
+set_source_files_properties("target/startup_stm32f429xx.s"
+                            PROPERTIES LANGUAGE ASM)
+
+find_program(CMAKE_SIZE arm-none-eabi-size)
+if(NOT CMAKE_SIZE)
+  message(FATAL_ERROR "Could not find 'arm-none-eabi-size'. Please install it or set CMAKE_SIZE manually.")
+endif()
+
+set(LINKER_SCRIPT_PATH "${CMAKE_CURRENT_LIST_DIR}/STM32F429XX_FLASH.ld")
+
+# Check file existance
+if(NOT EXISTS ${LINKER_SCRIPT_PATH})
+  message(FATAL_ERROR "Linker Script does not exist. Path = ${LINKER_SCRIPT_PATH}")
+endif()
+
+add_link_options(-T${LINKER_SCRIPT_PATH} -Wl,--gc-sections  -Wl,-Map=${PROJECT_NAME}.map)
+
+
+
+find_package(fmt REQUIRED)
+
+add_executable(${EXE_NAME} ${EXE_SOURCES})
+
+# create an alias target if fmt is used in header only mode
+if(NOT TARGET fmt::fmt AND TARGET fmt::fmt-header-only)
+  add_library(fmt::fmt ALIAS fmt::fmt-header-only)
+endif()
+
+target_link_libraries(${EXE_NAME} PUBLIC fmt::fmt)
+
+set(WRAPPED_SYMBOLS malloc free realloc calloc)
+
+set(WRAP_OPTIONS "")
+foreach(SYM IN LISTS WRAPPED_SYMBOLS)
+  list(APPEND WRAP_OPTIONS "-Wl,--wrap=${SYM}")
+endforeach()
+
+set(LINKER_STATS_OPTIONS "-Wl,--print-memory-usage")
+
+target_link_options(${EXE_NAME} PUBLIC ${WRAP_OPTIONS}
+                    ${LINKER_STATS_OPTIONS})
+
+add_custom_command(
+  TARGET ${EXE_NAME}
+  POST_BUILD
+  COMMAND ${CMAKE_SIZE} $<TARGET_FILE:${EXE_NAME}>
+  COMMENT "Memory usage summary")

example/arm-none-eabi/CMakePresets.json

@@ -0,0 +1,85 @@
+{
+  "version": 3,
+  "configurePresets": [
+    {
+      "name": "_conan",
+      "hidden": true,
+      "cacheVariables": {
+        "CMAKE_PROJECT_TOP_LEVEL_INCLUDES": "${sourceDir}/../../conan_provider.cmake"
+      }
+    },
+    {
+      "name": "_dir",
+      "hidden": true,
+      "binaryDir": "${sourceDir}/out/${presetName}/build",
+      "installDir": "${sourceDir}/out/${presetName}/install",
+      "cacheVariables": {
+        "REPORTS_DIR": "${sourceDir}/out/${presetName}/reports"
+      }
+    },
+    {
+      "name": "_arm_none_eabi",
+      "inherits": [ "_conan", "_dir" ],
+      "hidden": true,
+      "generator": "Ninja Multi-Config",
+      "toolchainFile": "${sourceDir}/gcc-arm-none-eabi.cmake",
+      "cacheVariables": {
+        "BUILD_TARGET": true,
+        "COMPILER_ARCH_FLAGS": "-mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard"
+      }
+    },
+    {
+      "name": "arm_none_eabi_gcc_14_win",
+      "description": "Windows Cross Compiler",
+      "inherits": [ "_arm_none_eabi" ],
+      "cacheVariables": {
+        "TOOLCHAIN_URL": "https://developer.arm.com/-/media/Files/downloads/gnu/14.3.rel1/binrel/arm-gnu-toolchain-14.3.rel1-mingw-w64-i686-arm-none-eabi.zip"
+      },
+      "condition": {
+        "type": "equals",
+        "lhs": "${hostSystemName}",
+        "rhs": "Windows"
+      }
+    },
+    {
+      "name": "arm_none_eabi_gcc_14_linux",
+      "description": "Linux Cross Compiler",
+      "hidden": true,
+      "inherits": [ "_arm_none_eabi" ],
+      "cacheVariables": {
+        "TOOLCHAIN_URL": "https://developer.arm.com/-/media/Files/downloads/gnu/14.3.rel1/binrel/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi.tar.xz"
+      },
+      "condition": {
+        "type": "equals",
+        "lhs": "${hostSystemName}",
+        "rhs": "Linux"
+      }
+    }
+  ],
+  "buildPresets": [
+    {
+      "name": "arm_none_eabi_gcc_14_win_dbg",
+      "configurePreset": "arm_none_eabi_gcc_14_win",
+      "displayName": "Debug",
+      "configuration": "Debug"
+    },
+    {
+      "name": "arm_none_eabi_gcc_14_win_rel",
+      "configurePreset": "arm_none_eabi_gcc_14_win",
+      "displayName": "Release",
+      "configuration": "Release"
+    },
+    {
+      "name": "arm_none_eabi_gcc_14_linux_dbg",
+      "configurePreset": "arm_none_eabi_gcc_14_linux",
+      "displayName": "Debug",
+      "configuration": "Debug"
+    },
+    {
+      "name": "arm_none_eabi_gcc_14_linux_rel",
+      "configurePreset": "arm_none_eabi_gcc_14_linux",
+      "displayName": "Release",
+      "configuration": "Release"
+    }
+  ]
+}