# CentOS Development Environment
This development environment is community supported and maintained. It may or may not work with current versions of PX4.
See Toolchain Installation for information about the environments and tools supported by the core development team.
The build requires Python 2.7.5. Therefore as of this writing Centos 7 should be used. (For earlier Centos releases a side-by-side install of python v2.7.5 may be done. But it is not recommended because it can break yum.)
# Common Dependencies
The EPEL repositories are required for openocd libftdi-devel libftdi-python
wget https://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm sudo yum install epel-release-7-5.noarch.rpm yum update yum groupinstall “Development Tools” yum install python-setuptools python-numpy easy_install pyserial easy_install pexpect easy_install toml easy_install pyyaml easy_install cerberus yum install openocd libftdi-devel libftdi-python python-argparse flex bison-devel ncurses-devel ncurses-libs autoconf texinfo libtool zlib-devel cmake vim-common
You may want to also install
# GCC Toolchain Installation
Execute the script below to install GCC 7-2017-q4:
This version of GCC is out of date.
At time of writing the current version on Ubuntu is
9-2020-q2-update (see focal nuttx docker file (opens new window))
pushd . cd ~ wget https://armkeil.blob.core.windows.net/developer/Files/downloads/gnu-rm/7-2017q4/gcc-arm-none-eabi-7-2017-q4-major-linux.tar.bz2 tar -jxf gcc-arm-none-eabi-7-2017-q4-major-linux.tar.bz2 exportline="export PATH=$HOME/gcc-arm-none-eabi-7-2017-q4-major/bin:\$PATH" if grep -Fxq "$exportline" ~/.profile; then echo nothing to do ; else echo $exportline >> ~/.profile; fi popd
Now restart your machine.
Check the version by entering the following command:
The output should be something similar to:
arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 7-2017-q4-major) 7.2.1 20170904 (release) [ARM/embedded-7-branch revision 255204] Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# Ninja Build System
Ninja (opens new window) is a faster build system than Make and the PX4 CMake generators support it.
On Ubuntu Linux you can install this automatically from normal repos.
sudo apt-get install ninja-build -y
Other systems may not include Ninja in the package manager. In this case an alternative is to download the binary and add it to your path:
mkdir -p $HOME/ninja cd $HOME/ninja wget https://github.com/martine/ninja/releases/download/v1.6.0/ninja-linux.zip unzip ninja-linux.zip rm ninja-linux.zip exportline="export PATH=$HOME/ninja:\$PATH" if grep -Fxq "$exportline" ~/.profile; then echo nothing to do ; else echo $exportline >> ~/.profile; fi . ~/.profile