Description:
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i have tried to install the php's functions for informix, but i have had some problems, i installed the apache 2.0.50 and the php 5.0.1, when i configure the php with the next line ./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql --with-informix. i have set the default path for informix (/home/informix). i got the next error.

Reproduce code:
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/zend_highlight.lo Zend/zend_llist.lo Zend/zend_opcode.lo Zend/zend_operators.lo Zend/zend_ptr_stack.lo Zend/zend_stack.lo Zend/zend_variables.lo Zend/zend.lo Zend/zend_API.lo Zend/zend_extensions.lo Zend/zend_hash.lo Zend/zend_list.lo Zend/zend_indent.lo Zend/zend_builtin_functions.lo Zend/zend_sprintf.lo Zend/zend_ini.lo Zend/zend_qsort.lo Zend/zend_multibyte.lo Zend/zend_ts_hash.lo Zend/zend_stream.lo Zend/zend_iterators.lo Zend/zend_interfaces.lo Zend/zend_exceptions.lo Zend/zend_objects.lo Zend/zend_object_handlers.lo Zend/zend_objects_API.lo Zend/zend_mm.lo Zend/zend_default_classes.lo Zend/zend_reflection_api.lo Zend/zend_execute.lo sapi/cli/php_cli.lo sapi/cli/getopt.lo main/internal_functions_cli.lo -lcrypt -lcrypt -lmysqlclient -lresolv -lm -ldl -lnsl -lxml2 -lz -lm -lxml2 -lz -lm -lxml2 -lz -lm -lcrypt -lxml2 -lz -lm -lcrypt  -o sapi/cli/php
main/internal_functions_cli.lo(.data.rel+0x28): undefined reference to `ifx_module_entry'
collect2: ld returned 1 exit status
make: *** [sapi/cli/php] Error 1