Error compiling 4.03pl1 on AIX 4.3.3 with Informix

Hello, I'm having trouble compiling with AIX 4.3.3 and Informix. It looks like a problem with the PHP library? I'm using IBM's compiler (xlc), and ran configure with "./configure --with-apxs=/usr/local/etc/apache/bin/apxs --with-mysql --with-informix". I have $INFORMIXDIR properly set, and have the PATH properly set to compile. ---quoted text---- <snip> /bin/sh ../libtool --silent --mode=link cc -g -I/cas/db/incl/esql -o libZend.la -ldl -lbind -lm -ldl -lcrypt zend-parser.lo zend_alloc.lo zend_compile.lo zend_constants.lo zend_dynamic_array.lo zend_execute.lo zend_execute_AP I.lo zend_highlight.lo zend_llist.lo zend_opcode.lo zend_operators.lo zend_ptr_stack.lo zend_stack.lo zend_variables.lo zend.lo zend_API.lo zend_extensions.lo zend_hash.lo zend_list.lo zend_indent.lo zend_builtin_functions.lo zend_sprintf.lo libZend_c.lalibtool: link: `libZend_c.la' is not a valid libtool archive make: 1254-004 The error code from the last command is 1. Stop. make: 1254-004 The error code from the last command is 1. ----end quote---- Is there a problem using IBM's compiler instead of gcc to compile PHP on AIX? Thanks in advance, Zack