bootstrap/3460: broken libgcc2 -fPIC

["Golubev I. N." <gin@mo.msk.ru>]

>Number:         3460
>Category:       bootstrap
>Synopsis:       broken libgcc2 -fPIC
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          wrong-code
>Submitter-Id:   net
>Arrival-Date:   Thu Jun 28 07:06:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Golubev I. N.
>Release:        3.0
>Organization:
>Environment:
System: SCO_SV d-fens 3.2 2 i386


	
host: i586-pc-sco3.2v5.0.2
build: i586-pc-sco3.2v5.0.2
target: i586-pc-sco3.2v5.0.2
configured with:  : (reconfigured)  : (reconfigured) ../gcc-3.0/configure --without-included-gettext --prefix=/usr --with-as=/usr/bin/gas --enable-multilib --disable-static --enable-shared --with-system-zlib --program-transform-name=s/cpp/gcpp/
>Description:

	1) Settings of `MULTILIB_*' in `t-sco5gas' (version as in
< http://gcc.gnu.org/cgi-bin/cvsweb.cgi/~checkout~/gcc/gcc/config/i386/t-sco5gas?rev=1.3&content-type=text/plain >)
affect nothing.  In particular, they do not cause
`stmp-multilib' make procedure to put `-fPIC' in ${LIBGCC2_CFLAGS}.
This explains why what is described below was never hit.

2) gcc generates incorrect asm code when compiling `unwind-dw2.c' for
target `libgcc2.a' with ${TARGET_LIBGCC2_CFLAGS} containing `-fPIC' as
in `t-sco5'.  It causes `gas' from binutils-2.11 to complain:

1.s:2948: Error: Rest of line ignored. First ignored character is `@'.

for gcc output:

	.long	.LFB1@GOTOFF

Configuring gcc with native as has even less chances to work.  It
generated inacceptable code at least in 2.95.2, and I always configure
it with gnu as since then.

>How-To-Repeat:

	make bootstrap

>Fix:
	

>Release-Note:
>Audit-Trail:
>Unformatted: