I downloaded the DBD-DB2-1.3 Os - AIX 5.3 Perl- v5.8.2 built for aix-thread-multi IBM C Compiler I have the app dev client installed I have DB2_HOME set to /opt/IBM/db2/V9.1 I get the following error when executing make # make cc_r -c -I"/opt/IBM/db2/V9.1/include" -I"/usr/opt/perl5/lib/site_perl/5.8.2/aix-thread-multi/auto/DBI" -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE -qmaxmem=16384 -qnoansialias -DUSE_NATIVE_DLOPEN -DNEED_PTHREAD_INIT -q32 -D_LARGE_FILES -qlonglong -O -DVERSION=\"1.3\" -DXS_VERSION=\"1.3\" "-I/usr/opt/perl5/lib/5.8.2/aix-thread-multi/CORE" -DDB2_CACHE_FIX DB2.c "/usr/include/sys/atomic_op.h", line 129.23: 1506-045 (W) Undeclared identifier _safe_fetch. "/opt/IBM/db2/V9.1/include/sqlext.h", line 1.1: 1506-046 (S) Syntax error. make: 1254-004 The error code from the last command is 1. Stop. Any suggestions? Thanks