Re: c++/4881: errno_location() not linked when creating static library

Re: c++/4881: errno_location() not linked when creating static library

[rodrigc]

The following reply was made to PR c++/4881; it has been noted by GNATS.

From: rodrigc@gcc.gnu.org
To: craig_files@agilent.com, gcc-bugs@gcc.gnu.org, gcc-gnats@gcc.gnu.org,
  gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/4881: errno_location() not linked when creating static library
Date: 17 Nov 2001 05:14:03 -0000

 Synopsis: errno_location() not linked when creating static library
 
 State-Changed-From-To: open->closed
 State-Changed-By: rodrigc
 State-Changed-When: Fri Nov 16 21:14:02 2001
 State-Changed-Why:
     This is not a GCC problem.  errno_location is defined
     in the GNU C library that comes with Linux.
     
     If you want errno_location to be defined in your code,
     then in your source, include
     #include <errno.h>
     
     And when you link make sure to add -lpthread,
     since the symbol for errno_location is defined
     in the libpthread library on Linux.
     
     This is not a gcc problem.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=4881&database=gcc

Re: c++/4881: errno_location() not linked when creating static library

[rodrigc]

Synopsis: errno_location() not linked when creating static library

State-Changed-From-To: open->closed
State-Changed-By: rodrigc
State-Changed-When: Fri Nov 16 21:14:02 2001
State-Changed-Why:
    This is not a GCC problem.  errno_location is defined
    in the GNU C library that comes with Linux.
    
    If you want errno_location to be defined in your code,
    then in your source, include
    #include <errno.h>
    
    And when you link make sure to add -lpthread,
    since the symbol for errno_location is defined
    in the libpthread library on Linux.
    
    This is not a gcc problem.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=4881&database=gcc

c++/4881: errno_location() not linked when creating static library

[craig_files]

>Number:         4881
>Category:       c++
>Synopsis:       errno_location() not linked when creating static library
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 15 07:46:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Craig Files
>Release:        gcc version 3.0.2 20010905
>Organization:
>Environment:
(Red Hat Linux 7.1 3.0.1-3) and
(hppa1.1-hp-hpux11.00)

the linux configure setup:
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --host=i386-redhat-linux
>Description:
Creating static libraries  the *errno_location() is not
declared.  This is a problem when loading the shared libraries
into TCL because it wants everything defined :

libddftcl.so: undefined symbol: _Z16__errno_locationv
where libddftcl.so is the shared library
linked by 
g++ -shared *.lo  -Wl,--whole-archive *.al *.a  -Wl,-soname -Wl,libddftcl.so.0 -o .libs/libddftcl.so.0.0.0

>How-To-Repeat:
create shared libraries and try to load them in tcl or 
evaluate if errno_location is defined
>Fix:
define errno_location when building shared libraries
>Release-Note:
>Audit-Trail:
>Unformatted: