how to build flash and use hydrafw on linux

How to build, flash and use hydrafw on Linux (Debian/Ubuntu):

• Official compiler for hydrafw v0.10 release is GCC ARM 4.9 2015q3(GNU_ARM_4_9_2015q3)
• This new version versus GCC ARM 4.7 2013 q3 improve lot of stuff (mainly it generate better/more compact code and GDB debugger support python ...)
• WARNING: GCC ARM 4.8.x & GCC ARM 5.0/5-2016-q1 up to GCC ARM 8-2019-q3-update (https://bugs.launchpad.net/gcc-arm-embedded/+bug/1570613) shall be avoided as they crash during link of chibios ...
  • This issue is fixed with https://launchpad.net/gcc-arm-embedded/+milestone/8-2018-q4-major or more
• Since 8600bd92a5ed083174e0867355f65a743dcfb9df, it is possible to use GCC 8.1 and newer to compile hydrafw

Prerequisites for Linux:

    cd ~
    sudo apt-get install gcc make git dfu-util putty
    wget https://launchpad.net/gcc-arm-embedded/4.9/4.9-2015-q3-update/+download/gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
    tar xjf gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
    rm -rf gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
    echo 'PATH=$PATH:~/gcc-arm-none-eabi-4_9-2015q3/bin' >> ~/.bashrc
    source ~/.bashrc
    git clone https://github.com/hydrabus/hydrafw.git hydrafw
    cd ~/hydrafw
    git submodule init
    git submodule update
    cd src/build-scripts
    make clean all

• For Debian / Ubuntu on 64bits/amd64 system see https://wiki.debian.org/Multiarch/HOWTO in order to enable multi architecture for i386 support.
• When multiarch is enabled you shall also install libc6-i686:i386 (Debian) or libc6:i386 (Ubuntu)

Build hydrafw on Linux:

    cd ~/hydrafw/src
    make clean
    make

Flash and use hydrafw on Linux:

See the Wiki Getting-Started-with-HydraBus-flash-and-use-hydrafw-on-linux

Alternative simplified way to Build & Flash hydrafw on Linux Debian (thanks to Mashu):

    sudo su
    apt-get install git dfu-util make gcc gcc-arm-none-eabi binutils-arm-none-eabi
    git clone https://github.com/hydrabus/hydrafw
    cd hydrafw/src/build-scripts
    make clean all
    cd ..
    cd hydrafw/src
    git submodule init
    git submodule update
    make
    dfu-util -d 0483:df11 -a 0 -D build/hydrafw.dfu

LTO errors

There is a bug (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69866 and here https://bugs.launchpad.net/gcc-arm-embedded/+bug/1570613) that prevents ChibiOS to be compiled with ARM GCC in versions 5.x, 6.x and 7.x. If the build fails with a message like :

lto1: internal compiler error: in add_symbol_to_partition_1, at lto/lto-partition.c:xxx

Update: https://bugs.launchpad.net/gcc-arm-embedded/+bug/1570613

• In GCC Bugzilla #69866, Rguenth (rguenth) wrote on 2021-12-07: Fixed.
• Bug Watch Updater (bug-watch-updater) on 2021-12-09 Changed in gcc: status: Confirmed → Fix Released

Issue fixed in https://launchpad.net/gcc-arm-embedded/+milestone/8-2018-q4-major

Solution: Use GCC ARM 4.9 2015q3(GNU_ARM_4_9_2015q3) or ARM GCC >= 8-2018-q4-major (https://bugs.launchpad.net/gcc-arm-embedded/+bug/1570613)