Hi All Previously I had posted about a link error /lib/libc.a(moveeq.o):moveeq.s:(.pr+0xc): undefined reference to `.___memmove' caused in AIX 5.3. Eric had replied that in AIX, one should use the AIX ld and NOT gnu ld. I tested and this works. The error no longer appears. Please also see note from Eric on this : See http://www.ibm.com/developerworks/aix/library/au-gnu.html for the linking issues, and note it says: "You cannot use the GNU linker on AIX as this will cause incorrectly linked binaries. By default, the AIX linker is used when using GCC on AIX. You should only use the default AIX linker." Thanks much With Regards Vardhan