* Package name    : libopencm3
  Version         : not released yet
  Upstream Author : Uwe Hermann <uwe@hermann-uwe.de>, Piotr Esden-Tempski <piotr@esden.net> and others
* URL             : http://libopencm3.org/
* License         : LGPL-3+
  Programming Lang: C
  Description     : firmware library for ARM Cortex-M3 and similar microcontrollers

libopencm3 (formerly libopenstm32) provides the basic library functions
for programming ARM Cortex M-3 microcontrollers. These tend to have
around up to 128k RAM and 1024k flash ROM, and onoboard peripherials
like SPI, UARTs, USB and general purpose IO (GPIO) pins. The library
contains drivers for the common core chip functionality (turning on and
off interrupts, managing the systick timer) and for the individual
chips.

    * * *

the debian branch i'm keeping in the upstream git repo at [1] is
functional in the sense that libopencm3 can be used from the installed
package, but has several shortcomings:

* it depends on something to provide arm-none-eabi-gcc and an
  appropriate libc (eg newlibc).

  currently, i'm using a popular script to download, compile and install
  the required toolchain: summon-arm-toolchain[2] (by the libopencm3
  authors), for which i wrote a little debian directory[3] -- in that
  form, it's pretty inacceptable as a debian package, though.

* it feels strange to have compiled binaries (statically linked
  libraries) in an "architecture: all" package -- but seems technically
  correct. (things were different if there was a debian port to those
  chips, but only few of them support running linux at all).

* loads of lintian warnings, many about files at strange locations.
  upstream installs to /usr/arm-none-eabi/{lib,include}, which is in
  line with what the gcc used is expecting.

* some essential packaging stuff is missing (copyright and watch file,
  the latter for lack of a release process, which is just being
  discussed on the project mailing list) -- can fix that myself, it's
  just lower priority than getting everything to build in the first
  place

* examples are not installed yet -- can fix that myself too

so what i'd need in order to complete that package is:

* an idea of how to create an arm-none-eabi-gcc package properly.
  my gut feeling says that the gcc-4.[67] packages should build another
  binary package called gcc-4.[67]-arm-none-eabi, similar to
  gcc-4.6-hppa64. i'm not familiar with how gcc actually works, so i
  wonder whether we could have a gcc-4.7-multiarch just like we have
  binutils-multiarch (which works well for libopencm3). same goes for
  gdb (not depended on, but more "essential" than "useful" to
  developers)

* a packaged newlibc; given how libstdc++ is integrated with gcc, i
  don't know whether that's separate from the above or not.

* a statement on where things should actually go. /usr/share feels just
  as wrong as "architecture: any" feels, and lintian complains about
  /usr/arm-none-eabi/.


i'd like to emphasise that (from my understanding) this is neither
related to multiarch nor to emdebian, both of which are dealing with
cross compilation to other debian architectures, and this is about bare
metal programming.

[1] https://github.com/libopencm3/libopencm3/tree/debian
[2] https://github.com/esden/summon-arm-toolchain
[3] https://github.com/chrysn/summon-arm-toolchain

ARM's recent generic pre-built GNU toolchain for Cortex-M* and Cortex-R*
processors, and the newlib-nano library, may make creation of an
arm-none-eabi-gcc toolchain much easier.

I would be willing to take a whack at a "gcc-arm-embedded" package (along
the lines of gcc-avr) if chrysn doesn't.

I'm one of the developers of libmaple (very similar to libopencm3); we
probably won't try to package that library any time soon (not stable
enough), but we would love see libopencm3 and all of it's (overlapping)
dependencies packaged.

retitle 691349 RFP: libopencm3 -- firmware library for ARM Cortex-M3 and similar microcontrollers
noowner 691349
tag 691349 - pending
thanks

Hi,

A long time ago, you expressed interest in packaging libopencm3. Unfortunately,
it seems that it did not happen. In Debian, we try not to keep ITP bugs open
for a too long time, as it might cause other prospective maintainers to
refrain from packaging the software.

This is an automatic email to change the status of libopencm3 back from ITP
(Intent to Package) to RFP (Request for Package), because this bug hasn't seen
any activity during the last 15 months.

If you are still interested in packaging libopencm3, please send a mail to
<control@bugs.debian.org> with:

 retitle 691349 ITP: libopencm3 -- firmware library for ARM Cortex-M3 and similar microcontrollers
 owner 691349 !
 thanks

It is also a good idea to document your progress on this ITP from time to
time, by mailing <691349@bugs.debian.org>.  If you need guidance on how to
package this software, please reply to this email, and/or contact the
debian-mentors@lists.debian.org mailing list.

Thank you for your interest in Debian,

retitle 691349 ITP: libopencm3 -- firmware library for ARM Cortex-M3 and
similar microcontrollers
owner philou <phil@reseau-libte.net>
thanks

Hi,

I'm gonna take care of it. I've started a clean packaging on salsa
(https://salsa.debian.org/Philou-guest/libopencm3).
The package is now respecting the Debian constraints for cross-libs
(such as newlib).

I'll finish to make it clean enough and post a RFS.

Cheers,

owner 691349 phil@reseau-libre.net
thanks

owner 691349 ar.manuelguerra@gmail.com

   Having spent 6 years without any progress since the new owner
   of this bug was reported, I have taken on the task of packaging
   libopencm3 and uploading it in the next few days, which will also
   close this bug.

Regards,

Control: retitle -1 RFP: libopencm3 -- firmware library for ARM
Cortex-M3 and similar microcontrollers

Package: wnpp
Owner: wnpp

   I was interested in uploading and maintaining this package long-term,
but the upstream maintainers aren't interested in this happening and
will do everything they can to prevent it. Anyone interested in
continuing the work done so far can continue with what's there, but they
must remove me from the list of uploaders.

   https://salsa.debian.org/debian/libopencm3

   I should warn you that the upstream maintainers are quite stubborn
and don't want anything to do with Debian. I won't elaborate further.

Thanks,

Control: owner -1


Thanks.



Em 06/12/2025 20:17, Manuel Guerra escreveu:

Thanks,

Em 07/12/2025 17:23, Lucas Castro escreveu:

Thanks,