How do I cross-compile with CMake?

Cross-compiling with CMake allows you to build applications for different platforms from a single machine. This can be especially useful when developing for embedded systems or when the target environment differs from the build environment.

The basic steps to set up a cross-compilation environment using CMake include creating a toolchain file, configuring your project with this toolchain, and then building your project.

Example of a Toolchain File

# mytoolchain.cmake set(CMAKE_SYSTEM_NAME Generic) set(CMAKE_SYSTEM_PROCESSOR arm) # specify the cross compiler set(CMAKE_C_COMPILER /path/to/your/cross/compiler/arm-gcc) set(CMAKE_CXX_COMPILER /path/to/your/cross/compiler/arm-g++)

Configuring the Project

mkdir build cd build cmake .. -DCMAKE_TOOLCHAIN_FILE=../mytoolchain.cmake

Building the Project

make

cross-compilation CMake toolchain file build system target platform embedded systems

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