How to Install a Raspberry Pi Cross Compiler on Linux?

How to Install a Raspberry Pi Cross Compiler on Linux

Problem:

Unable to install and use the Raspberry Pi cross compiler due to issues with libstdc library and PATH configuration.

Solution:

1. Prerequisites:

   • Install apt packages: apt-get install git rsync cmake libc6-i386 lib32z1 lib32stdc 6

2. Download Toolset:

   • Create raspberrypi folder in your home directory
   • Clone GitHub toolset: git clone git://github.com/raspberrypi/tools.git
   • Navigate to raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian

3. Add to PATH:

   • In ~/.bashrc, add: export PATH=$PATH:$HOME/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin

4. Confirm Compiler:

   • Run arm-linux-gnueabihf-gcc -v to verify compiler access

5. Create RootFS Folder:

   • In raspberrypi, create rootfs folder

6. Copy Library and usr Directories:

   • rsync -rl --delete-after --safe-links [email protected]:/{lib,usr} $HOME/raspberrypi/rootfs
   • Replace [email protected] with your Raspberry Pi IP.

7. Create CMake Config File:

   • Create ~/home/raspberrypi/pi.cmake and insert the following code:

     SET(CMAKE_SYSTEM_NAME Linux)
     SET(CMAKE_SYSTEM_VERSION 1)
     SET(CMAKE_C_COMPILER $ENV{HOME}/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-gcc)
     SET(CMAKE_CXX_COMPILER $ENV{HOME}/raspberrypi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++)
     SET(CMAKE_FIND_ROOT_PATH $ENV{HOME}/raspberrypi/rootfs)
     SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
     SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
     SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

8. Compile with CMake Toolchain File:

   • Provide the pi.cmake file to your CMake project using: -D CMAKE_TOOLCHAIN_FILE=$HOME/raspberrypi/pi.cmake

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