Ubuntu – How to install clearlinux gcc in ubuntu

I don't have specific experience with ClearLinux, but it looks like you can:

# It's best to first compile their gcc (https://github.com/clearlinux-pkgs/gcc)
mkdir ~/patched_source
git clone https://github.com/clearlinux-pkgs/linux ~/clearlinux_patches
cd ~/clearlinux_patches
./scripts/develop.sh linux.spec ~/patched_source

That should download the upstream kernel to a folder below ~/patched_source (it will tell you the exact name) and apply ClearLinux's own patches and default config.

You can then proceed to compile the kernel as usual, for instance:

cd that_folder
CC=/the/clearlinux/gcc make -j4 bindeb-pkg
# This will take a while and create a few linux-xxx.deb files in the parent directory
sudo dpkg -i ../*.deb   # Or just the latest

Disabling the CONFIG_RETPOLINE mitigation makes it possible to compile with Ubuntu's gcc (at a cost, obviously).

The usual warnings apply: try in a VM first, secure boot can be tricky, there might be some Ubuntu-specific patches missing, ...

If you feel adventurous you can also add some of their own cmdline options to /etc/default/grub (like the ones in lines 8-15)

The only solution that worked for me is:

Manual installing of .deb packages

(sad programmer noises)

1. Go to http://old-releases.ubuntu.com/ubuntu/pool/universe/g/
2. Download all .deb packages for gcc compiler version you want, f.e.:

gpc-2.1-3.4_3.4.6-6ubuntu5_amd64.deb
cpp-3.4_3.4.6-6ubuntu5_amd64.deb       lib32g2c0_3.4.6-6ubuntu5_amd64.deb
g++-3.4_3.4.6-6ubuntu5_amd64.deb       libg2c0_3.4.6-6ubuntu5_amd64.deb
g77-3.4_3.4.6-6ubuntu5_amd64.deb       libg2c0-dev_3.4.6-6ubuntu5_amd64.deb
gcc-3.4_3.4.6-6ubuntu5_amd64.deb       libstdc++6-dbg_3.4.6-6ubuntu5_amd64.deb
gcc-3.4-base_3.4.6-6ubuntu5_amd64.deb  libstdc++6-dev_3.4.6-6ubuntu5_amd64.deb

3. Manually install them by running command, f.e.:

sudo dpkg -i ./gcc-3.4-base_3.4.6-6ubuntu5_amd64.deb 
sudo dpkg -i ./cpp-3.4_3.4.6-6ubuntu5_amd64.deb
sudo dpkg -i ./gcc-3.4_3.4.6-6ubuntu5_amd64.deb

and so on...

Check the console output errors about package dependencies to figure out the package install order.

• If you encounter error (bug probably) about crossdependency of "g++..." package to "libstdc++..." package and v.v. then run install command to update libstdc++ package with exact version number, f.e.:

sudo apt-get install libstdc++6

4. Hooray! Use installed gcc (g++) version by, f.e.:

g++-3.4 -v

P.S.: of you're getting missing libs errors try

export LIBRARY_PATH=/usr/lib/x86_64-linux-gnu:$LIBRARY_PATH

before the build