[yocto] Problem compiling diffutils on poky-tiny in danny

[Darren Hart]

On 11/13/2012 05:11 PM, Tim Bird wrote:
> Hi all,
> 
> I'm using DISTRO=poky-tiny and trying to build:
>  $ bitbake core-image-minimal-initramfs
> 
> I get the following error trying to compile diffutils:
> 
> ...
> i586-poky-linux-gcc  -m32   -march=i586 --sysroot=/a/home/tbird/work/yocto/danny-test1/tmp/sysroots/qemux86 -std=gnu99  -I.      -O2 -pipe -g -feliminate-unused-debug-types -c -o wcwidth.o wcwidth.c
> In file included from wcwidth.c:23:0:
> ./wctype.h:448:1: error: static declaration of 'iswalnum' follows non-static declaration
> ./wctype.h:460:1: error: static declaration of 'iswalpha' follows non-static declaration
> ...


Is there an option to build diffutils without wide character support?
This is something tiny does away with and frequent point of failure
when trying to build additional packages with it.


> See the attached compile log for details.
> 
> Has anyone done this recently?  Is this one of the supported images for
> this distro (poky-tiny)?


I don't build that target as I use the cpio.gz from core-image-minimal
as an initial ramdisk. Is there a particular reason you want to build
"core-image-minimal-initramfs" specifically?


> 
> Has anyone seen this type of error before, or can provide some
> hints of what to check or adjust to fix this?

Yup, it's wide characters being required by diffutils and being excluded
by the poky-tiny DISTRO_FEATURES_LIBC assignment. If supported by
diffutils, we might be able to test ENABLE_WIDEC in diffutils and
configure accordingly (see the ncurses recipes for an example).

Thanks,

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Technical Lead - Linux Kernel