Tcl Source Code

On IRIX 6, ./configure adds "-n32" to CFLAGS but links
with "-32".

The two ABIs are not compatible, so the link fails. 
"-n32" is the recommended ABI for IRIX 6; the attached
patch to tcl.m4 changes LDFLAGS to use -n32 as well.

(P.S.: with the exception of the above, configure;
make; make install still works flawlessly on IRIX 5 & 6
as of today's CVS HEAD.)

(P.P.S: the same change should probably be made to
tk/unix/tcl.m4 as well).

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> I was a little throw off by the fact that 
> the IRIX64-6.* branch did not include
> -mabi=n32 in the CFLAGS.

Hm.  '-n32' is the default ABI, unless it's overridden
on the command line, or by an environment variable.
Maybe it would make sense to specify it explicitly in 
both places, or leave it unspecified altogether.
If I get a chance later this week I'm going to
try getting --enable-64bit working on this platform;
I'll revisit this issue then.

-mabi=n32 is apparently how GCC spells this; the native
IRIX compiler doesn't recognize this flag (only -n32, -32,
and -64).

Anyway, I've (re-)tested it on IRIX 6 and IRIX 5 and
it still works OK.

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This patch seems ok, but I was a little throw off
by the fact that the IRIX64-6.* branch did not include
-mabi=n32 in the CFLAGS. I don't have an IRIX box to
test this on so I am going to commit it and ask that
you double check that it works on the systems you
have access to.

File Added - 18272: autoconf.patch