Skip to content
/ crosware Public

Tools, things, stuff, miscellaneous, etc., for Chrome OS / Chromium OS

63 stars 4 forks Branches Tags Activity
Star
Notifications You must be signed in to change notification settings

ryanwoodsmall/crosware

BranchesTags

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

16,450 Commits
bin
bin
 
 
builds
builds
 
 
downloads
downloads
 
 
etc
etc
 
 
recipes
recipes
 
 
scripts
scripts
 
 
software
software
 
 
tmp
tmp
 
 
var
var
 
 
.cvsignore
.cvsignore
 
 
.gitignore
.gitignore
 
 
MAYBE.md
MAYBE.md
 
 
README.md
README.md
 
 
TODO.md
TODO.md
 
 

Repository files navigation

crosware

Tools, things, stuff, miscellaneous, detritus, junk, etc., primarily for Chrome OS / Chromium OS. This is a development-ish environment for Chrome OS on both ARM and x86 (32-bit and 64-bit for both). It should work on "normal" Linux too (Armbian, CentOS, Debian, Raspbian, Ubuntu, etc.).

bootstrap

If running on a Chromebook/Chromebox/ChromeOS/Flex machine, developer mode is necessary. crosware temporarily requires root access to set ownership and permission in /usr/local.

To bootstrap, using /usr/local/crosware with initial downloads in /usr/local/tmp...

⚠️ On ChromeOS sudo must be run via a virtual terminal ⚠️

Google, in their infinite wisdom, has disabled sudo on ChromeOS. Or, rather, disabled gaining extra privileges in the current process (PR_SET_NO_NEW_PRIVS/minijail/???). This effectively stops root user access via the ChromeOS GUI.

This means the sudo commands below must be run via a VT.

  • To access a VT, press one of the following key sequences:
    • Ctrl-Alt-right arrow (F2)
    • Ctrl-Alt-refresh (F3)
    • Ctrl-Alt-full screen (F4)
  • Login as chronos either with no password, or with a dev password (if you set one)
  • Run the sudo ... commands below
  • Return to the ChromeOS GUI with Ctrl-Alt-back arrow (F1)

If you want to start a locally-accessible SSH daemon, see: scripts/start-root-sshd.

# check you're the chronos user on a chromebook/not root in a container
whoami

# allow your regular user to write to /usr/local
sudo chgrp ${GROUPS} /usr/local
sudo chmod 2775 /usr/local

The sudo commands above only need to be run once; it should be safe to run them again. If you choose to use the scripts/start-root-sshd script, it must be run after every reboot.

The following can now be run as the standard ChromeOS user chronos from a GUI/crosh shell terminal.

# run the bootstrap
# use curl to download the primary shell script
# this in turn downloads a jdk, jgit and a toolchain
bash <(curl -kLs https://raw.githubusercontent.com/ryanwoodsmall/crosware/master/bin/crosware) bootstrap

# source the environment
source /usr/local/crosware/etc/profile
which crosware

install some packages

# install some stuff
crosware install busybox toybox

# update environment
source /usr/local/crosware/etc/profile

# see what we just installed
which -a make busybox toybox \
| xargs realpath \
| xargs toybox file

# automatically update the environment after an install
`${cwtop}/scripts/tcrs jo`
which -a jo

update

To get new recipes:

crosware update

And to re-bootstrap (for any updated zulu, jgitsh, statictoolchain installs):

crosware bootstrap

further usage

Run crosware without any arguments to see usage; i.e, a (possibly outdated) example:

usage: crosware [command]

commands:
  bootstrap : bootstrap crosware
  check-installed : given a package name, check if it's installed
  env : dump source-/eval-able crosware etc/profile
  help : show help
  install : attempt to build/install a package from a known recipe
  list-available : list available recipes which are not installed
  list-funcs : list crosware shell functions
  list-installed : list installed recipes
  list-installed-reqs : list installed recipes with their requirements
  list-recipe-deps : list recipes with their declared dependencies
  list-recipe-files : list recipes with their source file
  list-recipe-reqs : list recipes with their requirements
  list-recipe-reqs-expanded : list recipes with their expanded requirements
  list-recipes : list build recipes
  list-recipe-transitive-reqs : list recipes with only transitive requirements
  list-recipe-versions : list recipes with version number
  list-upgradable : list installed packages with available upgrades
  profile : show .profile addition
  reinstall : uninstall then install given packages without chasing upgrades
  run-func : run crosware shell function
  set : run 'set' to show full crosware environment
  show-arch : show kernel and userspace architecture
  show-env : run 'env' to show crosware environment
  show-func : show the given function name
  show-karch : show kernel architecture
  show-uarch : show userspace architecture
  uninstall : uninstall some packages
  update : attempt to update existing install of crosware
  update-list-upgradable : update crosware and list upgradable recipes
  update-upgrade-all : update crosware and upgrade out-of-date recipes
  upgrade : uninstall then install a recipe
  upgrade-all : upgrade all packages with different recipe versions
  upgrade-all-with-deps : upgrade all out-of-date packages and installed dependents
  upgrade-deps : upgrade any installed deps of a package
  upgrade-with-deps : upgrade a package and installed depdendents

a few more examples

See the scripts/ directory for a hodge-podge of stuff.

# works anywhere - for use system-wide on a normal non-chromeos linux distro (non-root users only)
sudo ln -sf /usr/local/crosware/scripts/etc-profile-dot-d_crosware.sh /etc/profile.d/zz-crosware.sh

# works anywhere - remove dev bits ({C,LD,...}FLAGS, etc.) from the environment
# also move crosware paths to the end of ${PATH}
# facilitates "i just want the command" installs
. /usr/local/crosware/etc/profile
. ${cwtop}/scripts/non-interactive.sh

# chromeos only - when using the scripts/start-root-sshd script
# for sudossh (non-interactive) and sudossht (terminal) command wrappers
sudo ln -sf /usr/local/crosware/scripts/usr-local-bin-sudossh /usr/local/bin/sudossh
sudo ln -sf /usr/local/crosware/scripts/usr-local-bin-sudossht /usr/local/bin/sudossht

# chromeos only? - obsolete on chromeos but good to note anyway
# wrap sudo to be passwordless with a trust-on-first-use approach
# this is (well, was) useful for dev-mode chromebooks with a chronos user password set
. /usr/local/crosware/scripts/passwordless-sudo.sh

use external or disable java and jgit

A few user environment variables are available to control how crosware checks itself out and updates recipes.

var default purpose
CW_GIT_CMD jgitsh which "git" command to use for checkout/update
CW_USE_JAVA true use java for bootstrap, jgit
CW_EXT_JAVA false use system java instead of zulu recipe
CW_USE_JGIT true use jgit.sh for checkout/update
CW_EXT_JGIT false use system jgit.sh instead of jgitsh recipe
CW_UPDATE_USE_GIT true use a git client to update
CW_UPDATE_USE_ZIP true use update-crosware-from-zip.sh to update
CW_IGNORE_MISSING false set to "true" ot ignore any missing prereqs

alpine

Alpine (https://alpinelinux.org/) uses musl libc (http://musl-libc.org) and as such cannot use the Zulu JDK as distributed. To bootstrap using the system-supplied OpenJDK from Alpine repos:

# as above, make sure /usr/local is writable by the primary user/group you'll be using...
# this assumes you're using the default busybox ash shell, and running apk as root...
export CW_EXT_JAVA=true
apk update
apk upgrade
apk add bash curl openjdk11
cd /tmp
curl -kLO https://raw.githubusercontent.com/ryanwoodsmall/crosware/master/bin/crosware
bash crosware bootstrap
# or, using bash process substitution...
#   bash -c 'export CW_EXT_JAVA=true ; bash <(curl -kLs https://raw.githubusercontent.com/ryanwoodsmall/crosware/master/bin/crosware) bootstrap'

Make sure the environment variable CW_EXT_JAVA is set to true (or just something other than false) to use system Java. Please note that /usr/local/crosware/etc/profile contains bashisms, and does not work on BusyBox ash, so set your SHELL accordingly.

If Zulu is installed on a non-glibc distro, run crosware uninstall zulu and make sure CW_EXT_JAVA and JAVA_HOME environment variables are configured.

To manually remove the Zulu install directory, environment script and installation flag, remove these paths:

  • /usr/local/crosware/etc/profile.d/zulu.sh
  • /usr/local/crosware/var/inst/zulu
  • /usr/local/crosware/software/zulu/

container

A container suitable for bootstrapping is available:

Run with:

docker run -it ryanwoodsmall/crosware

An interactive bash shell session will start, and any crosware C/C++ packages should build and run out of the box.

Build with something like:

docker build --tag crosware https://raw.githubusercontent.com/ryanwoodsmall/dockerfiles/master/crosware/Dockerfile
docker run -it crosware

Inside the container, install git to enable updates and list any upgradable packages:

# note: this installs git and its prereqs from source, it might take awhile
crosware install git
. /usr/local/crosware/etc/profile
crosware update
crosware list-upgradable

notes

This is a mostly self-hosting virtual Linux distribution of sorts, targeting all variations of 32-/64-bit x86 and ARM on Chrome OS, installable on other Linux distributions independently - with riscv64 support as well. The primary aim of crosware is to be a small - for some definition of small - and "as statically-linked as possible" development environment aimed at containers and ChromeOS, but also piggybacking on virtually any distribution that has a persistent /usr/local with write permissions.

A static-only GCC compiler using musl libc (with musl-cross-make ) is installed as part of the bootstrap; this sort of precludes things like emacs, but doesn't stop anyone from using the static musl toolchain to build a shared toolchain and libraries, bootstrap another compiler, leverage Alpine packages, etc.. Despite having "static" in the name, a libc.so (and ld.so, normally a symlink to musl's libc) is available and leveraged for a number packages, primarily to support other programming languages' linking modes and plugin/shared object strategies.

The initial bootstrap looks something like:

  • scripted, i.e., crosware bootstrap:
    • get a JDK (Azul Zulu OpenJDK for glibc)
    • get jgit.sh (standalone)
    • get static bootstrapped compiler
    • checkout rest of project
  • manually install some packages, i.e, crosware install vim git ...:
    • build GNU make
    • build native busybox, toolbox, sed, etc.
    • build a few libs / support (ncurses, openssl, slang, zlib, bzip2, lzma, libevent, pkg-config)
    • build a few packages (curl, vim w/syntax hightlighting, screen, tmux, links, lynx - mostly because I use them)

Some scripts that might be use for bootstrapping on a non-glibc distro:

environment

Environment stuff to figure out how to handle:

  • PATH (working)
  • PKG_CONFIG_LIBDIR/PKG_CONFIG_PATH (working)
  • CC (working)
  • CFLAGS (working)
  • CPP (working)
  • CPPFLAGS (working)
  • CXX (working)
  • INFOPATH
  • LDFLAGS (working)
  • MANPAGER (working)
  • MANPATH
  • ACLOCAL_PATH
  • EDITOR (vim?)
  • PAGER (working, set to less (gnu or busybox))

stuff to figure out

See the to-do list (TODO.md)

See the maybe file (MAYBE.md) for recipes to consider, notes, etc.

links

Chromebrew looks nice and exists now: https://github.com/skycocker/chromebrew

Alpine and Sabotage are good sources of inspiration and patches:

The Alpine folks distribute a chroot installer:

And I wrote a little quick/dirty Alpine chroot creator that works on Chrome/Chromium OS; no Docker or other software necessary.

The musl wiki has some pointers on patches and compatibility, and a list of useful alternative implementations of common programs/libraries/utilities/etc.; many are in use in crosware:

bootstrapping ex nihilo

Mes (and m2) might be useful at some point.

other sites/utilities/etc.

Suckless has a list of good stuff:

Mark Williams Company open sourced Coherent; might be a good source for SUSv3/SUSv4/POSIX stuff:

9p implementations:

Eltanin tools may be useful:

Busybox tiny utility notes:

C/C++ compiler

Static musl GCC compiler(s) are done, and should work to compile (static-only, some shared lib support) binaries on Chrome OS:

Based on Rich Felker's musl-cross-make:

recipes

bootstrap recipes

These recipes are included in the main bin/crosware script, as they're the foundation of the tool and are distributed as binaries. There are a handful of other binary recipes that are not necessary for bootstrapping. The statictoolchain recipe could theoretically be pulled into a normal standalone recipe, but is bedrock enough that it fits in the main script. A smaller, more supportable, preferably single-binary static Git client would/will hopefully also find its way to the main script for bootstrap purposes.

working recipes

deprecated/broken/disabled recipes

About

Tools, things, stuff, miscellaneous, etc., for Chrome OS / Chromium OS

Topics

bash package-manager curl busybox musl chromeos chromiumos musl-libc chrome-os dropbear toybox chromium-os crosware

Resources

Readme
Activity

Stars

63 stars

Watchers

8 watching

Forks

4 forks
Report repository

Releases

No releases published

Packages

No packages published

Languages