FreeCalypso > hg > freecalypso-tools
view PACKAGING @ 497:74610c4f10f7
target-utils: added 10 ms delay at the end of abb_power_off()
The deosmification of the ABB access code (replacement of osmo_delay_ms()
bogus delays with correctly-timed ones, which are significantly shorter)
had one annoying side effect: when executing the poweroff command from
any of the programs, one last '=' prompt character was being sent (and
received by the x86 host) as the Calypso board powers off. With delays
being shorter now, the abb_power_off() function was returning and the
standalone program's main loop was printing its prompt before the Iota chip
fully executed the switch-off sequence!
I thought about inserting an endless tight loop at the end of the
abb_power_off() function, but the implemented solution of a 10 ms delay
is a little nicer IMO because if the DEVOFF operation doesn't happen for
some reason in a manual hacking scenario, there won't be an artificial
blocker in the form of a tight loop keeping us from further poking around.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 25 May 2019 20:44:05 +0000 |
parents | 0a01e1c4ea54 |
children |
line wrap: on
line source
It has been brought to the Mother's attention that some people don't like the way our FC host tools are designed to be installed under /opt/freecalypso as opposed to some standard location like /usr/local, and that some people have been patching our Makefiles and code to move our installed binaries (and perhaps some of the support files as well) to other locations which they like better. PLEASE DON'T DO IT, especially if you are making a package or a build or setup or install script to be used by more than just you. FC host tools are a very complex package with a lot of interrelations between different tools, many tools in our suite internally invoke other tools by their /opt/freecalypso/bin absolute pathnames, some tools are designed to be invoked both by human users and by other tools (rvinterf is a prime example), and there are many support files used by various tools. If you try to outsmart the Mother and change the install location to something other than what I designed it to be, you will inevitably break something, and you probably won't notice the breakage because a typical casual user only uses a very small subset of our tools. Furthermore, if you move the install location, you will certainly break our various additional tools which are not included in the core FC host tools package but are meant to be installed on top of it, as all of them expect and require the /opt/freecalypso directory hierarchy described in doc/opt-freecalypso-tree. If your goal is to have our installed binaries accessible with a standard PATH without adding /opt/freecalypso/bin to it, the correct solution is to list the binaries installed in /opt/freecalypso/bin and make a symlink to each of these binaries from /usr/bin or from /usr/local/bin or from wherever you like. Use symlinks, don't move the binaries themselves! If you move the actual binaries, you will break those tools which internally invoke other tools, which we do a lot. If you still dislike the whole idea, consider the way Firefox does it: official release binaries from Mozilla are meant to be installed under /usr/lib/firefox or /usr/lib/firefox-$VERSION, the stuff inside that directory looks nothing like FHS, it is private to Firefox just like our /opt/freecalypso directory hierarchy is private to FreeCalypso, and the user makes one symlink from /usr/bin/firefox to /usr/lib/firefox-$VERSION/firefox or wherever the full complex package resides. If you can live with Firefox and other major application packages having their own non-FHS private directory trees, you can surely live with FreeCalypso doing the same. Why did we make our prefix /opt/freecalypso and not /usr/lib/freecalypso or /usr/local/freecalypso? Because there are many, many places where the full absolute pathname needs to be typed, and the location we chose is the shortest among other sensible options. Anyone who is going to make binary packages of our FC host tools (presumably for use on systems on which compilation from source is difficult) and wishes to have their packaging officially endorsed by the upstream MUST follow these guidelines: * The complete set of tools and support files MUST be included as if one built and installed our package from the official source, without omitting or breaking any part which you might consider unimportant. * Everything MUST be installed under /opt/freecalypso exactly as designed by the Mother; symlinks to binaries under /opt/freecalypso/bin from a more user- friendly location may optionally be included.