Re: GCC 2.7.? /tmp files
Zack Weinberg (zack@RABI.PHYS.COLUMBIA.EDU)
Sun, 18 Jan 1998 13:51:12 -0500
On Sat, 17 Jan 1998 21:21:22 +0800, dichro-bugtraq@RCPT.TO wrote:
>>>>>> "NB" == Niels Bakker <niels@EURO.NET> writes:
>
> NB> Unless you specify -pipe. Perhaps our kind
> NB> totally-not-overworked BUGTRAQ moderator :-) would like to see
> NB> whether GNU autoconf sets -pipe automatically when gcc is
> NB> detected? (I think so but unfortunately don't have much
> NB> sources handy at the moment.)
>
> Ah, but -pipe has it's own problems with autoconf. It stops various
>tests working - eg, the asm tests for ssh, and various assembler tests
>for GNU binutils (from memory). As a complete solution, this lacks a
>certain something :)
This is because of another bug in gcc 2.7.x: -pipe applied to a .s
file will hang the compiler. The compiler driver incorrectly assumes
that when -pipe is in use, there's something ahead of the assembler in
the pipeline.
Applying this patch to /.../gcc-lib/MACHINE/VERSION/specs will fix it:
=cut here=
--- specs~ Wed Jun 26 15:14:20 1996
+++ specs Sun Jan 18 13:46:30 1998
@@ -4,3 +4,3 @@
*asm_final:
-%{pipe:-}
+%|
=cut here=
and if anyone cares, I have autoconf macros to detect the bug and
hack around it.
The bug is fixed in egcs and I hope also in 2.8.
zw