Re: Developer environment setup problem

[Milos Nikic]

Hello, 

Thanks for the email.

The thing is I am not cross compiling. I am instead compiling from inside Hurd (in Qemu).

Yet cannot seem to get it quite right (even though it compiles successfully inside Hurd, when I copy it to /boot it panics on the next reboot).

Is a cross compiling route recommended instead?

On Mon, Jun 16, 2025 at 2:41 AM Almudena Garcia <liberamenso10000@gmail.com> wrote:

Hi:

To cross-compile gnumach from Linux you have to specify some flags in configure, to indicate the hurd architecture.

You can find the flag list here:
https://www.gnu.org/software/hurd/microkernel/mach/gnumach/building.html

Read the instructions for non-Debian systems and 64-bit, and try again

P.S.: I redirect this mail to bug-hurd, which is the main maillist now

El lunes 16 de junio de 2025, Milos Nikic escribió:
> Hello there,
>
> I am Milos, I am interested in writing code for Hurd.
> I am developing inside qemu (on Arch linux) with debian
> image debian-hurd-20230608.img.
> It loads, boots and looks good! I can use it!
> However, since I want to contribute code I need more than just that.
>
> I git pulled mig, gnumach and hurd.
> I have installed MIG.
>
> $ mig --version
> mig (GNU MIG) 1.8
>
> When i ".configure" and then make gnumach it passes.
> However when i copy it to my /boot/ and then point GRUB to it, i get kernel
> panic on next reboot:.
>
> "Kernel page fault at address 0xc1000000, eip = 0xc10a73f6
> Kernel Page fault trap, eip 0xc10a73f6
> kernel trap, type 14, code = 3
> Dump of i386_saved_state c11dbe98:
> EAX fffffffc EBX c008993c ECX 3fc22677 EDX 00008000
> ESI c0ff6e28 EDI c0fffffe EBP c07a3010 ESP 00000004
> CS 0008 SS 0000 DS 0010 ES 0010 FS 0010 GS 0010
> v86:            DS 000c ES 0000 FS c037 GS c037
> EIP c10a73f6 EFLAGS 00010016
> trapno 14: Page fault, error 00000003
> panic i386/i386/trap.c:347: kernel_trap: trap"
>
> I tried on the current HEAD, I also tried with the tag v1.8+git20230526
> which is the code that is, I believe, pushed to debian repositories.
>
> I get the same kernel panic, no matter what commit I try.
>
> I would like to contribute, but I need a way to test my changes locally
> before sending in patches.
>
> Is there a recommended way to develop and test? Or if you can help me what
> exactly am i doing or, what am i missing.
>
> Thanks in advance,
> Milos
>

--
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