JR41645: RECEIVED "UNDEFINED SYMBOL: .__MAGIC4" WHILE RAN DJXLINKINFORMIX WITH INFORMIX CLIENT SDK 3.70

DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• You may encounter following error when run djxlinkInformix with
  Informix client SDK 3.70 on AIX:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Begin processing for wrappers: INFORMIX
  INFORMIXDIR = /opt/IBM/informix
  IBM/Informix-Client SDK Version 3.70.FC4
  Copyright (C) 1991-2011 IBM
  
  Currently installed version: 3.70.FC4
  
  ld: 0711-224 WARNING: Duplicate symbol:
  __vft13eti_cplusplus9type_info
  ld: 0711-224 WARNING: Duplicate symbol:
  __vft24__DynaCastDesc_si_public14__DynaC
  astDesc
  ld: 0711-224 WARNING: Duplicate symbol: .is_xaopened
  ld: 0711-224 WARNING: Duplicate symbol: _system_configuration
  ld: 0711-224 WARNING: Duplicate symbol: .___fill64
  ld: 0711-224 WARNING: Duplicate symbol: ___fill64
  ld: 0711-224 WARNING: Duplicate symbol: .___bzero64
  ld: 0711-224 WARNING: Duplicate symbol: ___bzero64
  ld: 0711-224 WARNING: Duplicate symbol: .fmod
  ld: 0711-344 See the loadmap file libdb2informixF.map for more
  information.
  ld: 0711-317 ERROR: Undefined symbol: .__magic4
  An error occurred building library "libdb2informixF.a".
  End processing for wrappers: INFORMIX
  
  The error happened because of the issue described in Informix
  APAR IC75676.  The issue was firstly introduced into Informix
  Client SDK 3.70.xC1. Informix firstly fixed it on  3.70.xC3 and
  all references to __magic4 were removed, but they rolled back
  original fix at 3.70.xC4 thinking about a different approach for
  the fix: make sure libxlopt that contains the symbol "__magic4"
  was linked explicitly to the CSDK dynamic libraries so that the
  backward compatibility problem described by IC75676 was solved.
  However, for static libraries (as the scenario in script
  djxlinkInformix) which are simply archives of object files, this
  isn't possible so the error happened.
  
  The error should happen with Informix Client SDK 3.70.xC1,
  3.70.xC2, 3.70.xC4 and all later versions.  The error should
  only happen on an AIX platform.
  

Local fix

• To work around the problem, you can select one of below options:
  
  Option 1: Install and use Informix Client SDK 3.70.xC3 instead.
  
  Option 2:
  1). Check if libxlopt.a exist on your system(usually in path of
  /usr/vac/lib). If not, you have to install the redistributable
  fileset vac.aix53.lib to your AIX(
  http://publib.boulder.ibm.com/infocenter/comphelp/v111v131/topic
  /com.ibm.xlc111.aix.doc/compiler_ref/ruliblnk.html). You can
  download AIX package xlcpp.util that contains the fileset from
  following links:
  http://www-01.ibm.com/support/docview.wss?uid=swg24019828
  http://www-01.ibm.com/support/docview.wss?uid=swg24026636
  
  2). Add "-L/usr/vac/lib -lxlopt" to djxlinkInformix script:
  .........
        -K -lc_r -lC_r -lm -ldl -ltli -lpthread \
        -L$INFORMIXDIR/lib \
        -L/usr/vac/lib -lxlopt \              <<< add this line
        -L$INFORMIXDIR/lib/esql \
        -lthasf -lthgen -lifgls -lifglx -lthos -lthsql -lthxa \
        $INFORMIXDIR/lib/netstub.a \
        $INFORMIXDIR/lib/esql/checkapi.o \
  .........
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * The user is going to configure informix wrapper.             *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to Federation Server V97FP6 or later.                *
  ****************************************************************
  

Problem conclusion

• Firstly fixed in Federation Server V9.7 FP6.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  JR41638

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  INFORMIX WRAPPE

• Fixed component ID

  5724N9710

Applicable component levels

• R970 PSY

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