I am trying to install OpenLDAP on AIX. The issue is, when I say "./configure" the process doesn't accept the "pthread.h" file found in "/usr/include". When I checked the config.log file, it said "sys/processor.h" not found. Now I have managed to compile with CC=gcc and the process disables threads and is compiled successfully. But I need threading to be enabled. How can this been achieved. Can anyone tell me where to look for these header files. Or is there a alternate for this problem ??? Thanks in advance.