Linux cross-compilation

Table of Contents

• Cross compilation steps

Warning

These instructions are no longer recommended because they involve disabling security measures for the target system. Please try the instructions using CMake.

RF24 library supports cross-compilation. Advantages of cross-compilation:

• development tools don't have to be installed on target machine
• resources of target machine don't have to be sufficient for compilation
• compilation time can be reduced for large projects

Following prerequisites need to be assured:

• ssh password-less access to target machine Here is a hint
• sudo of a remote user without password Here is a hint
• cross-compilation toolchain for your target machine; for RPi

  git clone https://github.com/raspberrypi/tools rpi_tools

  and cross-compilation tools must be in PATH, for example

  export PATH=$PATH:/your/dir/rpi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin

Cross compilation steps

1. clone RF24 to a machine for cross-compilation

   git clone https://github.com/nRF24/RF24
   cd RF24

2. configure for cross compilation

   ./configure --remote=pi@target_linux_host

   eventually

   ./configure --remote=pi@target_linux_host --driver=<driver>

3. build

   make

4. (optional) install library to cross-compilation machine into cross-environment - important for compilation of examples

   sudo make install

5. upload library to target machine

   make upload

6. (optional) compile examples

   cd examples_linux
   make

7. (optional) upload examples to target machine

   make upload