A quick architecture status report

[Zack Weinberg]

Since I was tinkering with build-many-glibcs anyway, here is a report
on all the failures I currently see.

Overall things seem to be in good shape, but several architectures
have ELF-lint test failures:

FAIL: glibcs-ia64-linux-gnu check
    FAIL: elf/check-execstack

FAIL: glibcs-microblaze-linux-gnu check
    FAIL: elf/check-execstack

FAIL: glibcs-microblazeel-linux-gnu check
    FAIL: elf/check-execstack

FAIL: glibcs-powerpc64le-linux-gnu check
    FAIL: elf/check-localplt

FAIL: glibcs-hppa-linux-gnu check
    (with JDA's patches for HPPA pthreads applied)
    FAIL: elf/check-execstack
    FAIL: elf/check-localplt
    FAIL: elf/check-textrel

These shouldn't be hard to fix, for someone who knows the
architecture.  I don't, but I might try to fix them anyway.

Also, we are currently affected by two GCC bugs.  Nobody seems to be
working on them over on the GCC side; people interested in Coldfire or
SH should consider lending a hand.

FAIL: glibcs-m68k-linux-gnu-coldfire check-compilers
    In function ‘__sync_bool_compare_and_swap_1’:
    internal compiler error: in emit_library_call_value_1
    GCC bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467
    (4.6->4.7 regression, broken ever since)

FAIL: glibcs-sh3-linux-gnu check
FAIL: glibcs-sh3eb-linux-gnu check
FAIL: glibcs-sh4-linux-gnu check
FAIL: glibcs-sh4-linux-gnu-soft check
FAIL: glibcs-sh4eb-linux-gnu check
FAIL: glibcs-sh4eb-linux-gnu-soft check
    string/tst-cmp.o: virtual memory exhausted
    GCC bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78460
    (GCC7 regression)