[poky] glibc-initial fails to build in Thud with arm926ejs tune

[Matthew Stanger]

Hi,

I'm getting a build failure under Thud when trying to use the
following tune in my machine.conf:
#at91sam9.inc is from meta-atmel - at91sam9263 is ARM target
require conf/machine/include/at91sam9.inc
DEFAULTTUNE = "arm926ejs"


When doing a fresh build 'glibc-initial' config stage fail's with:
| checking for broken __attribute__((alias()))... yes
| configure: error: working alias attribute support required
| WARNING: exit code 1 from a shell command.
| ERROR: Function failed: do_configure (log file is located at
/home/matt/renew_thud/build/tmp/work/arm926ejse-poky-linux-gnueabi/glibc-initial/2.28-r0/temp/log.do_configure.1177)
ERROR: Task (/home/matt/renew_thud/build/../oe/poky/meta/recipes-core/glibc/glibc-initial_2.28.bb:do_configure)
failed with exit code '1'
NOTE: Tasks Summary: Attempted 2173 tasks of which 0 didn't need to be
rerun and 1 failed.

Summary: 1 task failed:
  /home/matt/renew_thud/build/../oe/poky/meta/recipes-core/glibc/glibc-initial_2.28.bb:do_configure

Can give follow on config.log's and such as required.

If I edit 'poky/meta/conf/machine/include/tune-arm926ejs.inc' to
change the '-mcpu' back to 'mtune'(commit f29d642c) then glibc builds
fine. GCC tuning is totally outside my expertise so I'm hoping someone
can confirm if '-mcpu' is really desired over '-mtune'? And also if
this look like a Poky issue or something else?

Cheers,
Matt