On Mon, 2025-03-10 at 22:22 -0500, R Philley wrote:
> Package: gcc-avr
> Version: 1:5.4.0+Atmel3.6.2-3
> Severity: minor
> X-Debbugs-Cc: rp80...@flash.net
>
> Dear Maintainer,
>
> * What led up to the situation?
>
> Needed to lookup options for the "avr-gcc" command. Could not find a
> man page.
> As "gcc" has a companion package "gcc-doc", I looked for and could
> not find a
> package "gcc-avr-doc". Tried the "gcc" man page, but it was not
> helpful due
> different version levels.
>
> avr-gcc --version: avr-gcc (GCC) 5.4.0
> gcc --version: gcc (Debian 12.2.0-14) 12.2.0
>
> Specifically, I was looking for program optimization options. Tried
> "-Oz" from
> "gcc" man page, but it was not supported by "avr-gcc".
>
> This leads me to humbly request that the man for "avr-gcc" be built
> into an
> installable package. (Perhaps "gcc-avr-doc" ?)
>
>
> Any attention to this issue would be appreciated. Thanks!
>
>
> -- System Information:
> Debian Release: trixie/sid
> APT prefers stable-updates
> APT policy: (500, 'stable-updates'), (500, 'stable-security'),
> (500, 'stable')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 6.1.0-31-amd64 (SMP w/2 CPU threads; PREEMPT)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
> LANGUAGE not set
> Shell: /bin/sh linked to /usr/bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
>
> Versions of packages gcc-avr depends on:
> ii binutils-avr 2.26.20160125+Atmel3.6.2-4
> ii libc6 2.36-9+deb12u9
> ii libgmp10 2:6.2.1+dfsg1-1.1
> ii libmpc3 1.3.1-1
> ii libmpfr6 4.2.0-1
> ii zlib1g 1:1.2.13.dfsg-1
>
> gcc-avr recommends no packages.
>
> Versions of packages gcc-avr suggests:
> ii avr-libc 1:2.0.0+Atmel3.6.2-3
> ii gcc 4:12.2.0-3
> ii gcc-doc 5:12.2.0-1
>
> -- no debconf information
You will probably get better results by updating your AVR toolchain to
the latest if possible.
$ avr-gcc --version
avr-gcc (GCC) 14.2.0
$ avr-gcc --help=optimizers
The following options control optimizations:
-O<number> Set optimization level to <number>.
-Ofast Optimize for speed disregarding exact
standards compliance.
-Og Optimize for debugging experience rather
than speed or size.
-Os Optimize for space rather than speed.
-Oz Optimize for space aggressively rather
than speed.
<...>
For a trivial example:
$ rm a.out
$ avr-gcc -mmcu=attiny1616 -Oz main.c
$ avr-size a.out
text data bss dec hex filename
210 0 0 210 d2 a.out
You may also wish to refer to /usr/share/doc/gcc-avr/README.Debian
Thanks
-Steve
