[Buildroot] LD_LIBRARY_PATH variable

[Buildroot] LD_LIBRARY_PATH variable

[Ran Shalit]

Hello,

I have some strange issue, in which I have to export LD_LIBRARY_PATH
(.../output/host/usr/lib), otherwise the build fails on not ""cannot
open shared object file: No such file or directory.... " during build
(with the make command without any arguments).
The strange thing is that I done it several times before without
specifying the export command, so I really don't understand what
happened in my host environment that requires this additional command.

But now I get a new error during build:
fakeroot: preload library `libfakeroot.so' not found, aborting.

On checking I do see that it exist in .../output/host/usr/lib
Is there any idea what's wrong ?

Regards,
Ran

[Buildroot] LD_LIBRARY_PATH variable

[Arnout Vandecappelle]

On 15-09-15 22:55, Ran Shalit wrote:
> Hello,
> 
> I have some strange issue, in which I have to export LD_LIBRARY_PATH
> (.../output/host/usr/lib), otherwise the build fails on not ""cannot
> open shared object file: No such file or directory.... " during build
> (with the make command without any arguments).
> The strange thing is that I done it several times before without
> specifying the export command, so I really don't understand what
> happened in my host environment that requires this additional command.
> 
> But now I get a new error during build:
> fakeroot: preload library `libfakeroot.so' not found, aborting.
> 
> On checking I do see that it exist in .../output/host/usr/lib
> Is there any idea what's wrong ?

 Have you moved your output directory to a different location? Everything that
is built for the host will look for shared libraries using an absolute path, so
if you move it to a different place, it will fail. There were some patches to
convert the absolute paths to relative paths using patchelf, but that was not
yet ready for committing.

 But specifically for fakeroot: that's just a script, and the path is hardcoded
in it. Look in host/usr/bin/fakeroot.


 Regards,
 Arnout


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF

[Buildroot] LD_LIBRARY_PATH variable

[Ran Shalit]

Hi Arnout,

> But specifically for fakeroot: that's just a script, and the path is hardcoded in it. Look in host/usr/bin/fakeroot.

That solved the issue for me !

But from where did fakeroot took this absolute path ?

Thank you!
Ran

On Wed, Sep 16, 2015 at 12:05 AM, Arnout Vandecappelle <arnout@mind.be> wrote:
> On 15-09-15 22:55, Ran Shalit wrote:
>> Hello,
>>
>> I have some strange issue, in which I have to export LD_LIBRARY_PATH
>> (.../output/host/usr/lib), otherwise the build fails on not ""cannot
>> open shared object file: No such file or directory.... " during build
>> (with the make command without any arguments).
>> The strange thing is that I done it several times before without
>> specifying the export command, so I really don't understand what
>> happened in my host environment that requires this additional command.
>>
>> But now I get a new error during build:
>> fakeroot: preload library `libfakeroot.so' not found, aborting.
>>
>> On checking I do see that it exist in .../output/host/usr/lib
>> Is there any idea what's wrong ?
>
>  Have you moved your output directory to a different location? Everything that
> is built for the host will look for shared libraries using an absolute path, so
> if you move it to a different place, it will fail. There were some patches to
> convert the absolute paths to relative paths using patchelf, but that was not
> yet ready for committing.
>
>  But specifically for fakeroot: that's just a script, and the path is hardcoded
> in it. Look in host/usr/bin/fakeroot.
>
>
>  Regards,
>  Arnout
>
>
> --
> Arnout Vandecappelle                          arnout at mind be
> Senior Embedded Software Architect            +32-16-286500
> Essensium/Mind                                http://www.mind.be
> G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
> LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
> GPG fingerprint:  7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF

[Buildroot] LD_LIBRARY_PATH variable

[Baruch Siach]

Hi Ran,

On Wed, Sep 16, 2015 at 08:45:54AM +0300, Ran Shalit wrote:
> > But specifically for fakeroot: that's just a script, and the path is 
> > hardcoded in it. Look in host/usr/bin/fakeroot.
> 
> That solved the issue for me !
> 
> But from where did fakeroot took this absolute path ?

fakeroot is just a shell script. It looks for libfakeroot.so in the 
directories listed in the $PATHS variable. See the $PATHS assignment in 
output/host/usr/bin/fakeroot.

baruch

> On Wed, Sep 16, 2015 at 12:05 AM, Arnout Vandecappelle <arnout@mind.be> 
>   wrote:
> > On 15-09-15 22:55, Ran Shalit wrote:
> >> Hello,
> >>
> >> I have some strange issue, in which I have to export LD_LIBRARY_PATH
> >> (.../output/host/usr/lib), otherwise the build fails on not ""cannot
> >> open shared object file: No such file or directory.... " during build
> >> (with the make command without any arguments).
> >> The strange thing is that I done it several times before without
> >> specifying the export command, so I really don't understand what
> >> happened in my host environment that requires this additional command.
> >>
> >> But now I get a new error during build:
> >> fakeroot: preload library `libfakeroot.so' not found, aborting.
> >>
> >> On checking I do see that it exist in .../output/host/usr/lib
> >> Is there any idea what's wrong ?
> >
> >  Have you moved your output directory to a different location? Everything that
> > is built for the host will look for shared libraries using an absolute path, so
> > if you move it to a different place, it will fail. There were some patches to
> > convert the absolute paths to relative paths using patchelf, but that was not
> > yet ready for committing.
> >
> >  But specifically for fakeroot: that's just a script, and the path is hardcoded
> > in it. Look in host/usr/bin/fakeroot.
> >
> >
> >  Regards,
> >  Arnout

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -