c++/7663: AIX-LD fails with TOC overflow

c++/7663: AIX-LD fails with TOC overflow

[wharms]

>Number:         7663
>Category:       c++
>Synopsis:       AIX-LD fails with TOC overflow
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 20 12:16:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     wharms@bfs.de
>Release:        unknown-1.0
>Organization:
>Environment:
creating 
aix 4.2.0
gcc version 2.95.2 
compiling gcc-3.2
>Description:
when compiling cc1plus the AIX-ld fails with

gcc -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-
long-long  -DHAVE_CONFIG_H  -o cc1plus \
      cp/call.o cp/decl.o cp/expr.o cp/pt.o cp/typeck2.o cp/class.o cp/decl2.o cp/error.o cp/lex.o cp/parse.o cp/ptree
.o cp/rtti.o cp/spew.o cp/typeck.o cp/cvt.o cp/except.o cp/friend.o cp/init.o cp/method.o cp/search.o cp/semantics.o c
p/tree.o cp/repo.o cp/dump.o cp/optimize.o cp/mangle.o cp/cp-lang.o attribs.o c-common.o c-format.o c-pragma.o c-seman
tics.o c-lex.o  main.o libbackend.a libcpp.a ./intl/libintl.a  -liconv  ../libiberty/libiberty.a
ld: 0711-781 ERROR: TOC overflow. TOC size: 77396       Maximum size: 65536

According to the manpage big TOC's carry a heavy performance penalty on AIX.
>How-To-Repeat:

>Fix:
add LDFLAGS += -Wl,-bbigtoc

so you get a warning because of the performance problems 

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

Re: c++/7663: AIX-LD fails with TOC overflow

[dje]

Synopsis: AIX-LD fails with TOC overflow

Responsible-Changed-From-To: unassigned->dje
Responsible-Changed-By: dje
Responsible-Changed-When: Fri Sep 20 14:24:31 2002
Responsible-Changed-Why:
    AIX
State-Changed-From-To: open->closed
State-Changed-By: dje
State-Changed-When: Fri Sep 20 14:24:31 2002
State-Changed-Why:
    One either can link with -Wl,-bbigtoc or compile with -mminimal-toc.  TOC usage is decreased in GCC 3.0 and beyond.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7663