[Bug bootstrap/51031] build error in libitm (how to disable trans-mem???)

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51031

--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-11-09 13:49:18 UTC ---
> I think that configure should check that the "as" supports avx independently of
> the architecture one is building on or for.

I don't think the failure in comment #2 has anything to do with avx: it is due
to pseudo-op (elf ones according rth on IRC) and I see it on x86_64-darwin10 as
well (AFAIK gcc is tune for Core2).

Note that I am now bootstrapping with

--- /opt/gcc/_clean/libitm/configure.tgt    2011-11-08 20:06:30.000000000 +0100
+++ /opt/gcc/work/libitm/configure.tgt    2011-11-09 00:42:05.000000000 +0100
@@ -94,6 +94,7 @@ case "${target}" in
   | *-*-netbsd* | *-*-freebsd* | *-*-openbsd* \
   | *-*-solaris2* | *-*-sysv4* | *-*-irix6* | *-*-osf* | *-*-hpux11* \
   | *-*-darwin* | *-*-aix*)
+    UNSUPPORTED=1
     # POSIX system.  The OS is supported.
     ;;