I'm trying to install the perl module MQSeries-1.23 on AIX and running into a compile issue. Here's my environment: :oslevel 5.2.0.0 :lslpp -l | grep mq mqm.Client.Bnd 5.3.0.1 COMMITTED WebSphere MQ Client Bundle mqm.Server.Bnd 5.3.0.1 COMMITTED WebSphere MQ Server Bundle mqm.base.runtime 5.3.0.8 APPLIED WebSphere MQ Runtime for mqm.base.samples 5.3.0.8 APPLIED WebSphere MQ Samples mqm.base.sdk 5.3.0.8 APPLIED WebSphere MQ Base Kit for mqm.client.rte 5.3.0.8 APPLIED WebSphere MQ Client for AIX mqm.java.rte 5.3.0.8 APPLIED WebSphere MQ Java Client and mqm.msg.en_US 5.3.0.8 APPLIED WebSphere MQ Messages - U.S. mqm.server.rte 5.3.0.8 APPLIED WebSphere MQ Server mqm.base.runtime 5.3.0.8 APPLIED WebSphere MQ Runtime for mqm.man.en_US.data 5.3.0.8 APPLIED WebSphere MQ Man Pages - U.S. :perl -v This is perl, v5.8.0 built for aix-thread-multi Copyright 1987-2002, Larry Wall So when I try and make the module: :make install cc_r -c -I"/usr/lpp/mqm/inc" -I../include -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE -qmaxmem=16384 -qnoansialias -DUS E_NATIVE_DLOPEN -DNEED_PTHREAD_INIT -q32 -D_LARGE_FILES -qlonglong -O -DVERSION=\"1.23\" -DXS_VERSION=\"1.23\" "-I/usr/opt/perl 5/lib/5.8.0/aix-thread-multi/CORE" MQSeries.c "/usr/include/crypt.h", line 46.16: 1506-334 (S) Identifier crypt_data has already been defined on line 2187 of "/usr/opt/perl5/lib/ 5.8.0/aix-thread-multi/CORE/perl.h". make: 1254-004 The error code from the last command is 1. Stop. make: 1254-004 The error code from the last command is 2. Stop. I know what the problem is, but I lack the expertise on how to properly resolve it. So what would be the best way to work around this? Thanks Greg Smith