[yocto] yocto build cross toolchain issue

[Khem Raj]

On Tue, Jul 5, 2016 at 3:06 AM, Chandra Mishra (chanmish) <
chanmish at cisco.com> wrote:

> Thanks Ross for your suggestion. It worked for me. But in the past it
> worked for me with old sequence but different gcc cross toolchain, so not
> thinking of changing the order.
>


why wont you change the order.​ Whats depending on it ?



>
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> *From:* Burton, Ross [mailto:ross.burton at intel.com]
> *Sent:* 05 July 2016 14:59
> *To:* Chandra Mishra (chanmish) <chanmish at cisco.com>
> *Cc:* yocto at yoctoproject.org
> *Subject:* Re: [yocto] yocto build cross toolchain issue
>
>
>
>
>
> On 5 July 2016 at 10:20, Chandra Mishra (chanmish) <chanmish at cisco.com>
> wrote:
>
>  * -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -static -lnsl -lpthread
> -lm -lrt*
>
> *<TOOLCHAIN_PATH>/sysroots/corei7-64-poky-linux/usr/lib/../lib/librt.a(shm_open.o):
> In function `shm_open':                               *
>
> *<SDK BUILD
> PATH>/build/tmp/work/corei7-64-poky-linux/glibc/2.22-r0/git/rt/../sysdeps/posix/shm_open.c:35:
> undefined reference to `__shm_directory'               *
>
>
> At a guess this is due to --as-needed dropping symbols as unused which
> then are used, because --as-needed needs a sorted library list.  Either
> remove --as-needed, or try reordering the libraries so that dependencies
> are in order.
>
>
>
>
> https://wiki.gentoo.org/wiki/Project:Quality_Assurance/As-needed#Importance_of_linking_order
> has more context.
>
>
>
> In this case I'd start with moving -lpthread to the end of the link line.
>
>
>
> Ross
>
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