Re: GCC 2.7.? /tmp files

From: Zack Weinberg (zackat_private)
Date: Sun Jan 18 1998 - 10:51:12 PST

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    On Sat, 17 Jan 1998 21:21:22 +0800, dichro-bugtraqat_private wrote:
>>>>>> "NB" == Niels Bakker <nielsat_private> 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

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