The target system is Linux, and the target processor is aarch64 (ARM64). The second line sets the project name to Hello, and the following two lines set the target system name and processor architecture. The first line sets the minimum version of CMake required to build this project to version 3.0. Set(CMAKE_FIND_ROOT_PATH /path/to/rootfs/) Set(CMAKE_CXX_COMPILER /usr/bin/aarch64-linux-gnu-g++) Set(CMAKE_C_COMPILER /usr/bin/aarch64-linux-gnu-gcc) To cross-compile your C++ program with CMake, create a new file called CMakeLists.txt and fill it with the following: # CMakeLists.txt Make sure you use the exact paths for these on your machine.Īfter extracting the content of the image, the cross-compilation environment should now be set up. The final copy command extracts the contents of this image to /path/to/rootfs. Substitute /path/to/iso/ with the actual path of the downloaded ISO image. Sudo mkdir /mnt/iso sudo mount -o loop /path/to/iso /mnt/iso sudo cp -r /mnt/iso/* /path/to/rootfs/ You can install GCC on Debian/Ubuntu using the following command: To do this, you need two tools: the GNU make utility and GCC. To start, you need to create a simple C++ program and then build it using Makefiles and GCC. In this tutorial, you’ll learn how to build a simple C++ program and then cross-compile it for AArch64 or ARM64-based devices using CMake and GCC. CMake is a robust build system generator that uses configuration files to create cross-compiled binaries, and GCC is a toolchain that includes compilers for various programming languages, including C, C++, Objective C, and Fortran. When cross-compiling your software, CMake and the GNU Compiler Collection (GCC) can be helpful. For example, with cross-compilation, you can compile a binary for ARM-based devices like a Raspberry Pi on your standard x86-64 development machine. This enables developers to build binaries for different architectures without using those specific architectures themselves. If you want to see what can be done by combining ideas from a Makefile and a Dockerfile, then check us out.Ĭross-compilation is the process of compiling your program on a different host than the target system. This article covers cross-compiling binaries using CMake and GCC. We make building software simpler-and faster-using containerization.
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