This cookie is set by GDPR Cookie Consent plugin. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. To see everything put together, head over to my GitHub repository. Putting everything together in this post should get you started your own toolchain for building Arm Cortex applications using CMake. Debug build cmake -DCMAKE_TOOLCHAIN_FILE="arm-gcc-cortex-m4.cmake" -DCMAKE_BUILD_TYPE "Debug" Release build cmake -DCMAKE_TOOLCHAIN_FILE="arm-gcc-cortex-m4.cmake" -DCMAKE_BUILD_TYPE "Release" The CMAKE_BUILD_TYPE describes whether to build a debug or release target. To use the custom defined toolchain, the CMAKE_TOOLCHAIN_FILE parameter is passed at the command line to point to the specific toolchain we want to use for the CMake project. Set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-flto") Executing CMake Set(CMAKE_C_COMPILER $ -specs=nano.specs -Wl,-gc-sections,-print-memory-usage") Not all these definitions would necessary be required to build your application, and this is also not a complete list, however these are what I commonly use. if(WIN32)ĭefine the different Arm executables needed to produce your binary. To support compilation across different platforms (Windows/Linux/MacOS), define the platform specific extension for the compiler. Set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY) To avoid the compiler test failure, set CMAKE_TRY_COMPILE_TARGET_TYPE to STATIC_LIBRARY. For cross-compiling, the CMAKE_SYSTEM_NAME will be Generic. Set(VFP_FLAGS "-mfloat-abi=hard -mfpu=fpv5-sp-d16") Common Arm definitionįirst we define some platform specific components. set(MCPU_FLAGS "-mthumb -mcpu=cortex-m7") The M7 is also available as a double precision version in which case you could use -mfpu=fvp5-d16.
The Cortex-M7 has a v5 single precision floating point unit with 16 FPU registers. Set(VFP_FLAGS "-mfloat-abi=hard -mfpu=fpv4-sp-d16") set(MCPU_FLAGS "-mthumb -mcpu=cortex-m4") The Cortex-M4 has a v4 single precision floating point unit with 16 FPU registers. Here we will define the specific flags needed to support each processor type. Target specific definitionsĮach Arm processor in the Cortex family has slightly different capabilities. CMake has native GCC support, so adding support for the Arm GCC compiler is relatively easy.
#CMAKE LINUX DEFINITION HOW TO#
The toolchain describes how to compile and link your application, including where the compiler location and the flags.
They key component for utilizing CMake with embedded programming is through the definition of the toolchain.
#CMAKE LINUX DEFINITION FULL#
CMake is a cross platform tool for building software, and if you have ever got tired of jumping from one chip manufacturer IDE to another, then CMake can be an attractive alternative as it creates an overall abstraction.Īdditionally, getting full control over how the application is built from within IDE can be difficult, and usually requires jumping through different dialog boxes to set the various required flags which can often this leads to misconfiguration. CMake and Arm GCC (arm-none-eabi-gcc) are the perfect combination for developing your embedded applications.
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