Hello,
I have been trying to compile a PX4 file, using both .WAF and Make, however they both end up failing in multiple ways. Attached image is from my latest attempt to compile (after a fresh clone and update) with “Make px4-v2”, where the compiler ended with a [CHECK-MODULES] Error 1 code.
Am I missing something? Everything should be ready to go as per the Developers guide in the ArduSub documentation.
Happy to send more info if needed 
Hi,
Make is deprecated, please provide the output with waf.
Also, check again our documentation, you should be able to compile without problems.
Followed documentation steps. Compiled with waf. Got this funny message…
“Cant use px4-v2, please use px4-v2 instead”
Any tips?
Hi,
Please follow the documentation, you are not in the correct tag.
Before compiling ArduSub, first checkout the stable version:
git fetch --tags
git checkout ArduSub-stable
git submodule update --recursive
Still having difficulties. Getting this error during build:
Using Ubuntu 18.04, this is what i’m doing from a clean start:
sudo apt-get update && sudo apt-get upgrade
git clone https://github.com/ardupilot/ardupilot.git
cd ardupilot
git submodule update --init --recursive
./Tools/environment_install/install-prereqs-ubuntu.sh -y
git fetch --tags
git checkout ArduSub-stable
git submodule update --recursive
./waf configure --board px4-v2
./waf build sub
Following these:
http://ardupilot.org/dev/docs/building-setup-windows10.html#building-setup-windows10
https://www.ardusub.com/developers/developers.html
What am I missing?
you need gcc 4.9 to build ardusub stable
Run the install-prereqs script after doing the checkout ArduSub-stable. You are installing the tools for the master branch but you are trying to compile last ArduSub-stable version.
Hi Patrick,
When doing it in this order I get “-bash: ./Tools/environment_install/install-prereqs-ubuntu.sh: No such file or directory”
You see that after checking out the stable ArduSub branch, that the folder environment_install dosent exist anymore:
Here is the pastebin of my log:
Would be fantastic if a could get a step by step list of commands and dependencies, in the correct order, detailing how to get from a fresh cloned repository, to a successful build with waf. Jumping back and forth from various guides and links, (not knowing if you are running commands is the right order) is most likely my issue with getting this build compiled.
From what i’ve learned;
Need to run install-prereqs in Ardusub branch
ArduSub-stable v.3.5.4 April 1 2019 requires GCC version 4.9 to build.
Compiling with Make is a bad idea (deprecated), as .WAF is becoming the new standard for building.
Update:
Tried fresh using Cygwin this time. (Setting up the waf Build Environment on Windows using Cygwin — Dev documentation). Installed GCC 4.9 (4.9-2015-q3-update : GNU Arm Embedded Toolchain) And did:
git clone https://github.com/ardupilot/ardupilot.git
cd ardupilot
git submodule update --init --recursive
git fetch --tags
git checkout ArduSub-stable
git submodule update --recursive
./waf configure --board px4-v2
However, now the configure process fails because it can’t find “Cmake”
The pastebin for my log is here.
What is causing cmake to not be found? Any help is greatly appreciated
A couple hours later, i’m back in WSL using Ubuntu, used WGET to download GCC 4.9 from here: ArduPilot firmware : /Tools/STM32-tools
During compile it cant find g++ or clang++ even though they are in the bin folder.
Environment setup script has been run in ArduSub stable branch with fetched tags, running GCC 4.9, submodules updated, still not configuring 
Using make is fine for ardusub stable.
During compile it cant find g++ or clang++ even though they are in the bin folder.
You need to add the binary paths to your search PATH environment variable.
Hi Christopher,
I’m sorry to inform you, but I was able to replicate your issue and we are going to update our documentation about it.
You can check the issue status here:
I did a test here with a docker image of ubuntu 18.04 that in theory is similar with your WSL version.
Install necessary tools
apt update
apt install build-essential cmake gcc-multilib genromfs git make python python-dev python-empy python-future python-matplotlib python-numpy python-opencv python-pip python-pyparsing python-scipy python-serial python-setuptools sudo unzip wget xz-utils zip
Download gcc-arm-none-eabi-4_9
wget http://firmware.ardupilot.org/Tools/STM32-tools/gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
tar jxf gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
export PATH=$PATH:$PWD/gcc-arm-none-eabi-4_9-2015q3/bin
Configure and compile ArduSub-stable.
git clone https://github.com/ardupilot/ardupilot.git && cd ardupilot &&
git submodule update --init --recursive &&
git fetch --tags &&
git checkout ArduSub-stable &&
git submodule update --recursive &&
./waf configure --board px4-v2 &&
./waf build sub`
@ChristopherLyon, if you like, I can compile here and send the resulting firmware to you. Patrick is working on updating the build instructions.
You can compile for me with a custom motor layout (attached) for an Pixhawk1 px4-v2?
I try everthing to compile, but not work
AP_Motors6DOF.txt (26.5 KB)