On 12/27/16 at 05:40am, Foxtrot Mike via arch-general wrote:

TL;DR; I need a way to install arm-none-eabi-gcc on Raspberry Pi (Arch Linux ARM) using pacman or from source.

Well arm-none-eabi-gcc is a armv7 (6?) cross compiler and on your RPI you are already running on an arm platform you probably won't need a cross compiler. (Assuming arvm7 can compile armv6 like gcc on 64 bit can compile 32 bit) #archlinux-arm might also be a good place to ask questions.

Hi guys,

First of all, I know that this mailing list entertains questions and information related to Arch Linux, not Arch Linux ARM. Since I have received valuable suggestions on this list before, I am going to ask my question here in the hope that someone would be able and willing to help. I couldn't find the required info on the internet.

I am running Arch on my main desktop. I installed arm-none-eabi-gcc package using pacman so I can compile code for my STM32F103 board.

I switched from Raspbian to ArchLinuxARM on Raspberry pi yesterday*. I have found most of the my daily usage packages in ARchLinuxARM repo, but can't find arm-none-eabi-gcc package. There's a post on ArchLinuxARM forums [1] requesting the same info, but the post didn't get any reply.

Every google search tells ways to develop for Raspberry Pi on x86 computers using arm-none-eabi-gcc. I couldn't find any meaningful info about developing for ARM Cortex-Mx on Raspberry pi.

Any suggestions would be apreciated.

Regards, Fulcrum

[1] https://archlinuxarm.org/forum/viewtopic.php?f=15&t=10060

* Hoping to use Raspberry pi as my daily computer so I could run Windows on my main desktop for gaming

-- Jelle van der Waa

iPadから送信 2016/12/27 18:04、Konstantin Gribov via arch-general のメッセージ:

Hello.

TL;DR;

...

I need a way to install arm-none-eabi-gcc on Raspberry Pi (Arch Linux ARM) using pacman or from source.

Just use gcc package.

It has these targets:

...

valid arguments to '-march=' are: armv2 armv2a armv3 armv3m armv4 armv4t armv5 armv5e armv5t armv5te armv6 armv6-m armv6j armv6k armv6kz armv6s-m armv6t2 armv6z armv6zk armv7 armv7-a armv7-m armv7-r armv7e-m armv7ve armv8-a armv8-a+crc armv8.1-a armv8.1-a+crc iwmmxt iwmmxt2 native

Which includes armv6-m, armv6s-m, armv7-m, armv7e-m. IIRC Cortex-M3 is armv7-m.

Of course you have to add `-mcpu=cortex-m3`, `-mthumb`, some keys for freestanding environment (`-ffreestanding` and `-nostdlib`), provide your own linker script via `-Tyour-layout.ld`.

I've tested compilation on RPi3 with gcc, it works fine for embedded targets.

--

Best regards, Konstantin Gribov

RPi 2 B is Armv7. IIRC. Idk about 3, But I think it is ArmV7

On Wed, 28 Dec 2016 03:18:44 +0000 Konstantin Gribov via arch-general wrote:

...

RPi 2 B is Armv7. IIRC. Idk about 3, But I think it is ArmV7

RPi3 is armv8-a (it has Cortex-A53 cores), not armv7-a. But it's offtopic.

OP's question was about cross-compiling for Cortex-M which is for microcontrollers. He just wants to compile code for it on RPi as a host. It's not very different from compiling for Cortex-M on x86_64.

Maybe not, but this entire thread is off topic, since Arch Linux ARM is a separate distro that's not supported here.