[oe] Couple of autotools configure problems

[Jack Mitchell]

First off:

| automake: warnings are treated as errors
| lib/Makefile.am:22: warning: ':='-style assignments are not portable
| lib/Makefile.am:23: warning: ':='-style assignments are not portable
| autoreconf: automake failed with exit status: 1
| ERROR: autoreconf execution failed.

What is a portable version of ':=', maybe '+='? I can't get anything but 
unrelated hits from Google.

Secondly:

| autoreconf: running: aclocal -I 
/mnt/storage/yoctoBuilds/poky-beaglebone.git/beaglebone-db/tmp/sysroots/x86_64-linux/usr/share/aclocal-1.12 
-I 
/mnt/storage/yoctoBuilds/poky-beaglebone.git/beaglebone-db/tmp/work/armv7a-vfp-neon-poky-linux-gnueabi/libwebsockets-0.0.0-r0/git/aclocal-copy/ 
-I 
/mnt/storage/yoctoBuilds/poky-beaglebone.git/beaglebone-db/tmp/sysroots/x86_64-linux/usr/share/aclocal-1.12 
-I 
/mnt/storage/yoctoBuilds/poky-beaglebone.git/beaglebone-db/tmp/work/armv7a-vfp-neon-poky-linux-gnueabi/libwebsockets-0.0.0-r0/git/aclocal-copy/ 
--force --warnings=cross
| aclocal: warning: unknown warning category 'cross'

Where does this warning=cross come from and how come it doesn't effect 
any other autotool builds?

I am attempting to compile libwebsockets which is located at: 
http://git.warmcat.com/cgi-bin/cgit/libwebsockets/tree/

Cheers,

-- 

   Jack Mitchell (jack at embed.me.uk)
   Embedded Systems Engineer
   http://www.embed.me.uk

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