Building gstreamer application from source for i686

[Rashid Farah]

Does gstreamer support i686 32 bit architecture?
My assumption is yes however I am getting some compilation warnings shown below.

When I build for x86_64 there are no warnings. My .mk file does specifie "-m32" for CLFAGS and LDFLAGS

./configure output shows:

Configuration
    Version                    : 1.6.4
    Source code location       : .
    Prefix                     : /testdir
    Compiler                   : gcc -m32 -std=gnu99
    Package name               : GStreamer source release
    Package origin             : Unknown package origin

Sample error:
gst/gstutils.h:772:3: warning: right shift count >= width of type [enabled by default]
   GST_WRITE_UINT64_BE (data, u.i);
   ^

The macro in gst/gstutils.h is expecting in this case 64 bit numbers.

I would appreciate any insight to this problem. 

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[Sebastian Dröge-3]

On So, 2016-07-10 at 18:30 +0000, Rashid Farah wrote:
> Does gstreamer support i686 32 bit architecture?

Yes

> Sample error:
> gst/gstutils.h:772:3: warning: right shift count >= width of type
> [enabled by default]
>    GST_WRITE_UINT64_BE (data, u.i);
>    ^
>
> The macro in gst/gstutils.h is expecting in this case 64 bit numbers.
> I would appreciate any insight to this problem. 

This suggests that you build GStreamer for 32 bits against a GLib
version that is built for 64 bits (and has the headers set up for 64
bits).

--

Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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[Rashid Farah]

Many thanks Sebastian,

I am using fedora 20 and I did not build GLIB from source instead I downloaded the packages. I do have glib for both 64 and 32 architectures in my system. I am newbie in this.

How do you suggest I go about specifying the 32 bit version? Should this be done as part of the PKG_CONFIG_PATH or should I pass it to the configure script along with the --host? In general terms what do you advice? or should I build it from source also?

Thanks,

Rashid

---

From: Sebastian Dröge <[hidden email]>
To: Rashid Farah <[hidden email]>; Discussion of the development of and with GStreamer <[hidden email]>
Sent: Sunday, July 10, 2016 10:38 AM
Subject: Re: Building gstreamer application from source for i686

On So, 2016-07-10 at 18:30 +0000, Rashid Farah wrote:
> Does gstreamer support i686 32 bit architecture?

Yes

> Sample error:
> gst/gstutils.h:772:3: warning: right shift count >= width of type
> [enabled by default]
>    GST_WRITE_UINT64_BE (data, u.i);
>    ^
>
> The macro in gst/gstutils.h is expecting in this case 64 bit numbers.
> I would appreciate any insight to this problem. 

This suggests that you build GStreamer for 32 bits against a GLib
version that is built for 64 bits (and has the headers set up for 64
bits).

--

Sebastian Dröge, Centricular Ltd · http://www.centricular.com
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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[Sebastian Dröge-3]

On So, 2016-07-10 at 18:54 +0000, Rashid Farah wrote:
> Many thanks Sebastian,
> I am using fedora 20 and I did not build GLIB from source instead I
> downloaded the packages. I do have glib for both 64 and 32
> architectures in my system. I am newbie in this.
> How do you suggest I go about specifying the 32 bit version? Should
> this be done as part of the PKG_CONFIG_PATH or should I pass it to
> the configure script along with the --host? In general terms what do
> you advice? or should I build it from source also?

It depends on how you're compiling. You need to ensure that all
dependencies are available as 32 bit versions, and then point to the
corresponding pkg-config files of those and also in general set up the
library, linker, include, etc paths accordingly so the 32 bit versions
are used instead of the 32 bit ones.

--

Sebastian Dröge, Centricular Ltd · http://www.centricular.com
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