Resend: 19980906 problems with libgcc2.a on mips-sgi-irix6.5

[Martin Knoblauch]

Resent, as this never appeared. Probably due to a large
attachment :-(
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Hi,

 after some more investigation, it seems that the mainline
has a problem that the 1.1.release does not have. When building
libgcc2.a, a global symbol "_vt$9type_info" is missing in the
mailine, causing lots of unresolved symbols during "check".
Basically every program using libstdc++ fails.

 The problem lies with tinfo.cc. for libgcc2.a it is compiled
the following way:

% ./xgcc -B./ -O2 -DIN_GCC -g -W -Wall -I./include -g1 -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -I. -I../../egcs-19980906/gcc
-I../../egcs-19980906/gcc/config -I../../egcs-19980906/gcc/../include -c
../../egcs-19980906/gcc/cp/tinfo.cc

 I have generated *.s files using this options for egcs-19980906 and
egcs-1.1.

% ./xgcc -B./ -O2 -DIN_GCC -g -W -Wall -I./include -g1 -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -I. -I../../egcs-19980906/gcc
-I../../egcs-19980906/gcc/config -I../../egcs-19980906/gcc/../include -S
../../egcs-19980906/gcc/cp/tinfo.cc -o tinfo.s


% gcc -O2 -DIN_GCC -g -W -Wall -I./include -g1 -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -I. -I../../egcs-19980906/gcc
-I../../egcs-19980906/gcc/config -I../../egcs-19980906/gcc/../include -S
../../egcs-19980906/gcc/cp/tinfo.cc -o tinfo-1.1.s

% ./xgcc -v
Using builtin specs.
gcc version egcs-2.92.04 19980906 (gcc2 ss-980609 experimental)
% gcc -v
Reading specs from
/usr/egcsroot/lib/gcc-lib/mips-sgi-irix6.5/egcs-2.91.57/specs
gcc version egcs-2.91.57 19980901 (egcs-1.1 release)

 Searching for _vt$9type_info yields:

% grep _vt\$9 tinfo.s
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        .weakext        _vt$9type_info
        .size    _vt$9type_info,16
_vt$9type_info:
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $3,_vt$9type_info
% grep _vt\$9 tinfo-1.1.s
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        .globl  _vt$9type_info
        .size    _vt$9type_info,16
_vt$9type_info:
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $2,_vt$9type_info
        la      $3,_vt$9type_info

 It seams that the mainline version does not generate
the symbol as global. This leads to the unresolved symbols,
as tinfo2.cc needs it.

Hope this helps. If necessary, I will do more test.

Martin
-- 
+---------------------------------+
|Martin Knoblauch                 |
|---------------------------------|
| http://www.knobisoft.de          |
+---------------------------------+
|e-mail: <knobi@knobisoft.de>     |
+---------------------------------+