[OE-core] [Openembedded-architecture] Cached size of off_t

[Martin Jansa]

On Tue, Jan 12, 2016 at 03:23:33PM -0800, Khem Raj wrote:
> Hi
> 
> We cache size of off_t in site files and the value is 4 in most cases
> 
> 
> meta/site/arm-linux:ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=4}
> meta/site/ix86-common:ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=4}
> meta/site/nios2-linux:ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=4}
> meta/site/powerpc32-linux:ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=4}
> meta/site/x32-linux:ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=8}
> meta/site/x86_64-linux:ac_cv_sizeof_off_t=${ac_cv_sizeof_off_t=8}
> 
> 
> However this value is wrong when largefile support is enabled (which is default) on
> most OE based distros. It also lands us in nasty bugs which are complicated to uncover
> eg. the curl issue
> 
> http://git.openembedded.org/openembedded-core/commit/?id=3c58712465494e441c4036a7cf21d2e6d343efab
> 
> and just in OE-Core more e.g. grub2,libsndfile1,pax are showing same symptoms.

It's even more complicated in curl case, which bumps SONAME version when
off_t is changed.

So with dizzy we had libcurl5, but after the commit above we get
libcurl4 which looks strange considering the curl version in oe-core is newer now.

You can force the bump with --enable-soname-bump, but that doesn't make
it ABI compatible, because SIZEOF_OFF_T was really changed inside curl
build.

Regards,

> I think this value should be left for configure to compute and
> autotools.bbclass should pass --{enable|disable}-largefile based upon
> DISTRO_FEATURES enabling largefile support
> 
> Do we see any downsides or point I might have missed
> 
> Thank you
> -Khem
> 



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> Openembedded-architecture at lists.openembedded.org
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-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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