Cross compilation error

[Jonathan Tremesaygues]

Hi,

I’m using Debian Buster amd64 and I try to cross-compile ppp for armhf.

I never cross-compiled before so I have followed this guide:
https://wiki.debian.org/CrossCompiling#Building_with_dpkg-buildpackage

A paste of my actions is available here: http://paste.debian.net/1201433/

If I understand the error, the compiler search for the amd64 version of
the libssl-dev’s headers instead of the armhf one. But I don’t
understand why. Any idea or clue?

Best regards,

Jonathan T.

[Georgi Naplatanov]

Hi Jonathan,

probably this warning is the issue.

"dpkg-architecture: warning: specified GNU system type
arm-linux-gnueabihf does not match CC system type x86_64-linux-gnu, try
setting a correct CC environment variable"

The environment variable CC should contain the path to the compiler for
armhf architecture not for amd64 one.

HTH

Kind regards
Georgi

[Jonathan Tremesaygues]

It’s look like you are right. By setting CC to arm-linux-gnueabihf-gcc,
I was able to compile the package.

But it is not the job of ’dpkg-buildpackage -a<arch>’ to set the right
compiler and other stuff? Neither the wiki, the manpage nor the
unofficial guides found on Internet say I have to set manually the
compiler :-/


Jo

[to...@tuxteam.de]

On Wed, Jun 16, 2021 at 06:07:00PM +0200, Jonathan Tremesaygues wrote:
> On 16/06/2021 17:55, Georgi Naplatanov wrote:

[...]

> >The environment variable CC should contain the path to the compiler for
> >armhf architecture not for amd64 one.
> >
> >HTH
> >
> >Kind regards
> >Georgi
> >
>
> It’s look like you are right. By setting CC to
> arm-linux-gnueabihf-gcc, I was able to compile the package.
>
> But it is not the job of ’dpkg-buildpackage -a<arch>’ to set the
> right compiler and other stuff? Neither the wiki, the manpage nor
> the unofficial guides found on Internet say I have to set manually
> the compiler :-/

It should, I think.

You might like to take this to <debian...@lists.debian.org>,
there are pretty knowledgeable folks there.

Cheers
- t

[Paul Wise]

tomas wrote:
> On Wed, Jun 16, 2021 at 06:07:00PM +0200, Jonathan Tremesaygues wrote:
> > But it is not the job of ’dpkg-buildpackage -a<arch>’ to set the
> > right compiler and other stuff? Neither the wiki, the manpage nor
> > the unofficial guides found on Internet say I have to set manually
> > the compiler :-/
>
> It should, I think.

Looks like the cross build QA service sees the same failure:

http://crossqa.debian.net/src/ppp

I think that this means the package doesn't support being cross built
yet due to problems in the packaging.

I noticed that if I replace this line in debian/rules:

./configure --prefix=/usr

With this line:

./configure --prefix=/usr --cc=gcc --cross_compile="$(DEB_HOST_GNU_TYPE)-"

Then the cross build starts working.

Would you like to file a bug report about this issue?

If so, run this command:

reportbug --source ppp

Make sure to use these headers and pseudo-headers:

Subject: ppp: FTCBFS -- uses the build architecture compiler

Source: ppp
Version: 2.4.9-1+1
Severity: normal
Tags: patch
X-Debbugs-Cc: debian...@lists.debian.org
User: debian...@lists.debian.org
Usertags: ftcbfs

If not, then I can file the bug for you.

--
bye,
pabs

https://wiki.debian.org/PaulWise

[Jonathan Tremesaygues]

Thanks on your feedback!

If you don’t mind, I would prefer that you take care of the bug report.


Best regards,
Jo

[Paul Wise]

Jonathan Tremesaygues wrote:

> If you don’t mind, I would prefer that you take care of the bug
> report.

Will do.