gmane.comp.embedded.crossdev

python cross compiling

Bjorn Stuyck — 2013-04-25T15:46:19

Hi,

In my current project I am integrating the onboard virtual keyboard into ptxdist.
This is my first challenge with ptxdist so my knowledge of ptxdist is not quite good yet.

But I’m stuck on the next issue.

Onboard is compiled through python calling setup.py build.
The .install step uses the CROSS_PYTHON for executing the setup.py.

CROSS_PYTHON = sysroot-cross/bin/python2.6

Setup.py requires python-distultils-extra and python-setuptools which I successfully implemented at host side.
After the installation of those modules, setup.py continued and printed other requirements.
The next requirements were dconf and GTK+ dependencies which where already implemented at target side.

But when the script tries to get the pkg version it can’t find the dconf or GTK+ package versions.
Those package descriptions are found in the sysroot-target/usr/lib/pkgconfig directory.
But python is looking at sysroot-host for the pkgconfig dir which does not contain the approriate information.

So the script fails and stop

Re: [PATCH] Add option to specify the pathto ncurses5-config

Thomas Petazzoni — 2012-07-27T06:28:58

Le Fri, 27 Jul 2012 06:23:18 +0000,
Zafer Dirilgen <zdirilgen< at >otokar.com.tr> a écrit :


In the headers of each mail you have received from this list:

List-Unsubscribe: <http://metis.pengutronix.de/cgi-bin/mailman/options/crossdev>,
<mailto:crossdev-request< at >send-patches.org?subject=unsubscribe>

Best regards,

Thomas

Re: [PATCH] Add option to specify thepathtoncurses5-config

Zafer Dirilgen — 2012-07-27T06:23:18

Sorry, I made a mistake while writing
I want to quit from crossdev email distribution list.
Do you have any idea how can I remove my email address from distribution list.

Thanks,
Zafer

-----Original Message-----
From: crossdev-bounces-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org [mailto:crossdev-bounces-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org] On Behalf Of Zafer Dirilgen
Sent: Friday, July 27, 2012 9:16 AM
To: crossdev-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org
Subject: Re: [crossdev] [PATCH] Add option to specify the path to ncurses5-config

Hello,

I don't want to quit from crossdev email distribution list.
Do you have any idea how can I remove my email address from distribution list.

Thanks,
Zafer

-----Original Message-----
From: crossdev-bounces-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org [mailto:crossdev-bounces-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org] On Behalf Of Marcin Juszkiewicz
Sent: Thursday, July 26, 2012 7:50 PM
To: crossdev-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org
Subject: Re: [crossdev] [PATCH] Add op

Re: [PATCH] Add option to specify the pathtoncurses5-config

Zafer Dirilgen — 2012-07-27T06:16:15

Hello,

I don't want to quit from crossdev email distribution list.
Do you have any idea how can I remove my email address from distribution list.

Thanks,
Zafer

-----Original Message-----
From: crossdev-bounces-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org [mailto:crossdev-bounces-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org] On Behalf Of Marcin Juszkiewicz
Sent: Thursday, July 26, 2012 7:50 PM
To: crossdev-iOHc7L4DgpLFDiOEh+KS6A< at >public.gmane.org
Subject: Re: [crossdev] [PATCH] Add option to specify the path to ncurses5-config

W dniu 26.07.2012 18:31, Mike Frysinger pisze:



I do not remember how it ended as it was not my part of metadata.

_______________________________________________
crossdev mailing list

________________________________

Bu e-posta mesaji kisiye ozel olup, gizli bilgiler iceriyor olabilir. Eger bu e-posta mesaji size yanlislikla ulasmissa, icerigini hic bir sekilde kullanmayiniz ve ekli dosyalari acmayiniz. Bu durumda lutfen e-posta mesajini kullaniciya hemen geri gonderiniz ve tum kopyalarin

Re: [PATCH] Add option to specify the path toncurses5-config

Marcin Juszkiewicz — 2012-07-26T16:49:47

W dniu 26.07.2012 18:31, Mike Frysinger pisze:



I do not remember how it ended as it was not my part of metadata.

Re: [PATCH] Add option to specify the path toncurses5-config

Mike Frysinger — 2012-07-26T16:38:37

i haven't seen that, but that's because we build with the libdir set to 
/usr/lib/pkgconfig regardless of compiling (since we don't do non-standard --
prefix installs)

be good to send a patch upstream for that though :)


which is correct ...

we also do this in Gentoo:
    # For some reason, sources depends on pc-files which depends on
    # compiled libraries which depends on sources which ...
    # Manually delete the pc-files file so the install step will
    # create the .pc files we want.
    rm -f misc/pc-files


patching the configure to not do the `test` would probably be a one line hack, 
so it sucks, but shouldn't be that bad to carry until the next rev
-mike

Re: [PATCH] Add option to specify the path toncurses5-config

Mike Frysinger — 2012-07-26T16:31:11

have you worked with python upstream to get it sorted out in the right place ?
-mike

Re: [PATCH] Add option to specify the path toncurses5-config

Marcin Juszkiewicz — 2012-07-26T08:41:49

W dniu 25.07.2012 20:39, Mike Frysinger pisze:


Please check how OpenEmbedded handles Python cross compilation. We have
it sorted out long time ago.

Re: [PATCH] Add option to specify the path to ncurses5-config

Thomas Petazzoni — 2012-07-26T08:29:51

Le Wed, 25 Jul 2012 12:03:19 -0400,
Mike Frysinger <vapier< at >gentoo.org> a écrit :


And the --enable-pc-files support in ncurses is completely stupid:

 (*) In its configure.in file, it checks whether the PKG_CONFIG_LIBDIR
     directory exists to decide whether it should install .pc files or
     not. This is stupid, it should just install them unconditionally
     (you already said --enable-pc-files, so why bothering checking
     once again?). But anyway, you pass
     PKG_CONFIG_LIBDIR=/home/foo/mybuildsystem/staging/usr/lib/pkgconfig,
     and there you go, ./configure understands that you *REALLY* want
     those damn .pc files to be installed.

 (*) But then, their misc/Makefile.in installs the .pc files not in
     $(PKG_CONFIG_LIBDIR), but in $(DESTDIR)/$(PKG_CONFIG_LIBDIR). So,
     since your DESTDIR is going to be /home/foo/mybuildsystem/staging,
     and PKG_CONFIG_LIBDIR
     is /home/foo/mybuildsystem/staging/usr/lib/pkgconfig, guess what
     happens... your .pc files are installed
     in /h

Re: [PATCH] Add option to specify the path toncurses5-config

Mike Frysinger — 2012-07-25T18:39:38

we specifically disable python support when cross-compiling (mostly because we 
don't care about python on the target), so haven't hit any problems.

however, be aware that cross-compiling python modules is completely f-ed up, 
and it's usually not the fault of end module builders (i.e. gpsd).  the python 
system itself is pretty bad when it comes to distutils as it likes to mix the 
compiler settings used to build python itself when building modules.

ChromiumOS has a few hacks to try and make this work, but i haven't looked too 
closely at is as we don't generally do python for the target.
-mike

Re: [PATCH] Add option to specify the path to ncurses5-config

Thomas Petazzoni — 2012-07-25T16:09:37

Le Wed, 25 Jul 2012 12:03:19 -0400,
Mike Frysinger <vapier< at >gentoo.org> a écrit :


Ah, ah. I had seen that gpsd used pkg-config in the first place before
trying ncurses5-config, but I didn't see ncurses having installed .pc
files. I guess we lack the --enable-pc-files, which I'll try. .pc files
are definitely much nicer than those ugly -config shell scripts.

On a different note, we're having cross-compilation problems with the
Python support of gpsd: it uses the host compiler, and wrong library
locations. I haven't gotten to the bottom of it at the moment. Is
anyone using this?

Anyway, thanks Mike for the interesting pointer!

Thomas

Re: [PATCH] Add option to specify the path toncurses5-config

Mike Frysinger — 2012-07-25T16:03:19

why bother at all ?  gpsd supports ncurses pkg-config files which solves all 
these sort of problems.  did you pass --enable-pc-files when running ncurses' 
configure script ?
-mike

[PATCH] Add option to specify the path to ncurses5-config

Thomas Petazzoni — 2012-07-24T20:16:48

By default, gpsd's SConstruct looks in the PATH to find
ncurses5-config. However, in cross-compiling environments, we may need
to tell the SConstruct script to use another ncurses5-config script.

The following implements the equivalent of the
ac_cv_prog_ncurses5_config variable that exists to solve the same
problem in autoconf configure scripts.

The path to the ncurses5-config script can be passed using the
ncurses_config= variable. If no value is passed, the existing behavior
is preserved.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8< at >public.gmane.org>

Index: b/SConstruct
===================================================================
--- a/SConstruct
+++ b/SConstruct
< at >< at > -172,6 +172,7 < at >< at >
     ("fixed_stop_bits",     0,             "fixed serial port stop bits"),
     ("target",              "",            "cross-development target"),
     ("sysroot",             "",            "cross-development system root"),
+    ("ncurses_config",      "",            "ncurses

Re: ptxdist-trunk-1329017471 (Main PTXdist Development Trunk) URL-Check vom Sun Feb 12 04:31:11 CET 2012 ()

Robert Schwebel — 2012-02-13T09:40:58

Dear zlib maintainers,

On Mon, Feb 13, 2012 at 10:18:45AM +0100, Juergen Beisert wrote:

Would it be possible that you leave the old versions at their place,
instead of removing them if a new version is available?

All cross build systems (like ptxdist, OpenEmbedded, yocto, buildroot,
OpenWRT etc) who try to download sources from upstream servers would
really love you for doing this :-)

rsc

Re: [PATCH] [PATCH] only include execinfo.h ifcrashtrace support is enabled

Peter Korsgaard — 2012-01-03T08:54:11

 Robert> On Mon, Jan 02, 2012 at 02:49:40PM +0100, Peter Korsgaard wrote:
 >> On systems without backtrace suport (E.G. uClibc depending on config),
 >> execinfo.h might not be available, breaking the build.
 >> 
 >> Fix it by only including it if enabled.

 Robert> But the patch just removes the include...?

It's already included below in a conditional:

#ifdef ENABLE_CRASHTRACE
#include <execinfo.h>
#endif

Re: [PATCH] [PATCH] only include execinfo.h if crashtrace support is enabled

Robert Schwebel — 2012-01-03T08:45:20

But the patch just removes the include...?

rsc

[PATCH] [PATCH] only include execinfo.h if crashtracesupport is enabled

Peter Korsgaard — 2012-01-02T13:49:40

On systems without backtrace suport (E.G. uClibc depending on config),
execinfo.h might not be available, breaking the build.

Fix it by only including it if enabled.

Signed-off-by: Peter Korsgaard <jacmet-OfajU3CKLf1/SzgSGea1oA< at >public.gmane.org>
---
 src/logging/nm-logging.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/src/logging/nm-logging.c b/src/logging/nm-logging.c
index ca6a709..26c8670 100644
--- a/src/logging/nm-logging.c
+++ b/src/logging/nm-logging.c
< at >< at > -23,7 +23,6 < at >< at >
 
 #include <dlfcn.h>
 #include <syslog.h>
-#include <execinfo.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>

Re: Proposal for send-patches.org patch repository

Mike Frysinger — 2011-12-16T17:08:28

http://news.gmane.org/gmane.comp.embedded.crossdev
-mike

Re: Proposal for send-patches.org patch repository

Enrico Weigelt — 2011-12-16T16:51:16

* Robert Schwebel <r.schwebel-bIcnvbaLZ9MEGnE8C9+IrQ< at >public.gmane.org> schrieb:

Okay. Which were th arguments for against the git approach ?


cu

Re: Proposal for send-patches.org patch repository

Robert Schwebel — 2011-12-16T15:39:25

This has been discussed already, and nothing has changed.

rsc

Re: Proposal for send-patches.org patch repository

Enrico Weigelt — 2011-12-16T15:23:19

* Esben Haabendal <esben.haabendal-rjjw5hvvQKZaa/9Udqfwiw< at >public.gmane.org> schrieb:

Hi folks,


sorry for digging out this old thread again ...


At this point, I'd like to raise the question, why to use text-
based patches at all, instead of directly using git.


cu