Bug#479185: FTBFS on sparc, Error: Architecture mismatch on "casa"

[Matthias Klose <doko@cs.tu-berlin.de>]

reassign 479185 nginx
severity 479185 serious

from the preprocessed sources:

.LLBB7:
        .file 2 "src/os/unix/ngx_gcc_atomic_sparc64.h"
        .loc 2 36 0
        mov     0, %g3
.LLVL159:
! 36 "src/os/unix/ngx_gcc_atomic_sparc64.h" 1
        casa [%g2] 0x80, %g1, %g3
! 0 "" 2

so it's the configury which is wrong (some thing probably on other
biarchs). examining the running kernel at build time is wrong.