How to became a Gentoo developer
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This document provides instructions on how to become a Gentoo developer. It begins by explaining what Gentoo is - a highly customizable Linux distribution built from source code. It then discusses using Gentoo for development purposes due to features like debugging symbols for all packages. The document outlines the steps to become a Gentoo developer such as searching bugs, fixing package files, talking to a mentor, and taking a quiz. Overall, the document serves as a guide for becoming involved in the Gentoo development community.
How to became a Gentoo developer
- 1. How to became a Gentoo Developer Alice Ferrazzi
- 2. kernel :~ $ whoami - Gentoo Kernel Project Leader - Gentoo Kernel Security - Gentoo Mentor Tokyo University of Technology - Google Summer of Code 2017 for Gentoo organization - Open Source software system laboratory
- 3. Summary ● What is Gentoo? ○ Gentoo based products ○ Customization/User flags ● Gentoo as a development enviroment ● Became a Gentoo Developer ● Conclusion
- 4. What is Gentoo? ● Highly customizable meta-distribution ● Built from source and support for user patching ● Available in most architecture ● Freedom of choice (OpenRC, SystemD, Runit, Epoch, and Busybox) ● Easy maintenance (also of the Linux Kernel)
- 5. Gentoo based products ● Chrome OS ○ Chrome OS Has Double the Marketshare of Regular Linux in USA(2017/03) ○ Chromebooks outsold Macs for the first time in the US (2016/05) ● Softbank Pepper (NAOqi OS) ● CoreOS ● Most of Gentoo’s sponsors run Gentoo: ○ https://www.gentoo.org/inside-gentoo/sponsors/ ● Daniel Robbins maintains a useful graphic of Gentoo derivatives: ○ http://www.funtoo.org/Gentoo_Ecosystem
- 7. Gentoo Package Use Flags ● High Flexibility ○ Choice of which feature to install
- 8. Customization Adding djvu and chm use flags to okular
- 9. Gentoo as development enviroment
- 10. Debugging
- 11. Debugging packages ● Debugging symbols for all packages ● Debugging symbols for selected packages
- 12. Debugging with Gentoo part1 For all packages /etc/portage/make.conf # Global changes for all packages you will install FEATURES=”nostrip” # keep symbols in elf files or FEATURES=”splitdebug” # saving the symbols files under /usr/lib/debug/ FEATURES="installsources" # keep the sources files on /usr/src/
- 13. Debugging with Gentoo part2 For selected packages /etc/portage/env/debug.conf ---- CFLAGS="${CFLAGS} -g" CXXFLAGS="${CXXFLAGS} -g" FEATURES="splitdebug" ---- or -ggdb -ggdbv2 -ggdbv3 /etc/portage/package.env ---- media-gfx/gimp debug.conf ----
- 14. Patching
- 15. Applying patches ebuild $(portageq get_repo_path / gentoo)/sys-apps/demo/demo-1.0.ebuild clean unpack cd /var/tmp/portage/sys-apps/demo-1.0/work Change code make patch and put on /etc/portage/patches/sys-apps/demo/my_patch.patch
- 16. Cross compiling
- 17. Cross compiling ● Gentoo Cross-toolchain generator ○ emerge -av sys-devel/crossdev Example: # crossdev -t sparc Will build the sparc cross-toolchain
- 18. Became a Gentoo Developer
- 19. ● Search bugs ● Fix ebuilds ● Talk to mentor ● Do quiz with mentor
- 20. Search bugs ● Bugday (many information on how to find bugs) ○ https://wiki.gentoo.org/wiki/Bugday ● Getting started ○ https://wiki.gentoo.org/wiki/Project:Proxy_Maintainers# Getting_Started ● Gentoo bugzilla ○ Bugs.gentoo.org
- 21. Fix ebuilds (packages) ● Sending patches to Gentoo bugzilla ○ bugs.gentoo.org ● Sending pull-request on github ○ https://wiki.gentoo.org/wiki/Gentoo_GitHub
- 22. Checking our changes Let’s use repoman: emerge -av repoman repoman -x full Man repoman
- 23. Talk to mentor ● Freenode #gentoo-mentors ○ https://wiki.gentoo.org/wiki/Project:Mentors ● Contacting me directly (日本語ok) ○ alicef@gentoo.org
- 24. Do Quiz with mentor ● Simple quiz with no time limitation ○ https://wiki.gentoo.org/wiki/Project:Recruiters/Quiz
- 25. Gentoo Japanese support channels
- 26. Gentoo Japanese support ● #gentoo-ja freenode ● gentoo.slack.com http://slackin.aliceinwire.net ● groups.google.com/forum/#!forum/gentoojp ● http://www.gentoo.jp/ ● Gentoo 勉強会 @aliceinwire http://gentoo.connpass.com ● Wiki.gentoo.org 日本語もあります ● https://github.com/gentoojp/issues
- 27. Still not convinced Try Gentoo in any virtual enviroment: ● Gentoo on Qemu/Open stack ○ https://wiki.gentoo.org/wiki/Project:Openstack ● Gentoo on VirtualBox/VMware ○ http://www.osboxes.org/gentoo/
- 28. Any questions ? and Thanks you!!