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From: =?UTF-8?Q?Jo=C3=A3o_Costa?= <joaocostalapin@gmail.com>
Date: Tue, 25 May 2021 19:03:51 +0100
Message-ID: <CAB9YM8jgdbEYTB8Sb7212KWcLEkRDSVjEYZ8P2qCCStaX9CuPQ@mail.gmail.com>
Subject: error: implicit declarations while compiling (xenomai3.1+ubuntu20.04)
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To: xenomai@xenomai.org

Hello,

I am having some problems with a fresh install of Xenomai 3.1 and I was
hoping that someone could help me out solving those
 or by sharing some installation instructions for dummies.

*Test bench configuration:*
-Ubuntu server 20.04.2 running kernel 5.4.0-73-generic
-Xenomai version 3.1
-Kernel downloaded for patch/installation: linux-5.4.77.tar.gz (since I
could not find an exact match with ipipe patch and the kernel already
running)
-ipipe-core-5.4.77-x86-2.patch

*I am following this instructions:*
- https://www.programmersought.com/article/14375437246/
- had the need to install/change some packages " gcc libncurses-dev flex
bison openssl libssl-dev dkms libelf-dev libudev-dev libpci-dev
libiberty-dev build-essential kernel-package"
- assumed that where is written:
$makeolddefconfig
it should be
$make oldconfig

*I am getting the following errors:*
*after running* " CONCURRENCY_LEVEL=3D8 make-kpkg  --rootcmd fakeroot
--initrd  --revision=3D1.0.0 kernel_image kernel_headers "
*#1*

> kernel/ipipe/core.c: In function =E2=80=98__ipipe_spin_lock_irqsave=E2=80=
=99:
> kernel/ipipe/core.c:547:9: error: implicit declaration of function
> =E2=80=98arch_mangle_irq_bits=E2=80=99 [-Werror=3Dimplicit-function-decla=
ration]
>   547 |  return arch_mangle_irq_bits(s, flags);
>       |         ^~~~~~~~~~~~~~~~~~~~
>   CC      kernel/sched/cputime.o
>
*#2*

> kernel/ipipe/core.c: In function =E2=80=98__ipipe_spin_unlock_irqrestore=
=E2=80=99:
> kernel/ipipe/core.c:574:7: error: implicit declaration of function
> =E2=80=98arch_demangle_irq_bits=E2=80=99; did you mean =E2=80=98arch_earl=
y_irq_init=E2=80=99?
> [-Werror=3Dimplicit-function-declaration]
>   574 |  if (!arch_demangle_irq_bits(&x))
>       |       ^~~~~~~~~~~~~~~~~~~~~~
>       |       arch_early_irq_init
>
*#3*

>  arch/x86/kernel/process.c: In function =E2=80=98mwait_idle=E2=80=99:
> arch/x86/kernel/process.c:699:4: error: implicit declaration of function
> =E2=80=98__ipipe_halt_root=E2=80=99; did you mean =E2=80=98ipipe_test_roo=
t=E2=80=99?
> [-Werror=3Dimplicit-function-declaration]
>   699 |    __ipipe_halt_root(1);
>       |    ^~~~~~~~~~~~~~~~~
>       |    ipipe_test_root

cc1: some warnings being treated as errors
>


> make[3]: *** [scripts/Makefile.build:266: arch/x86/kernel/process.o] Erro=
r
> 1
> make[2]: *** [scripts/Makefile.build:500: arch/x86/kernel] Error 2
> make[1]: *** [Makefile:1729: arch/x86] Error 2


 make[1]: *** [Makefile:1729: kernel] Error 2


*Notes:*
- I am not sure it my answers when executing the $make oldconfig were the
correct ones and/or can be related to these problems
- Also, the checks/unchecks in the kernel menu ($menuconfig) are not
exactly like the ones on those instructions since there are items that do
not appear or are enabled/embedded by default and cannot be unselected


Thanks