Compiler:  ibmcxx.cmp                 3.6.6.0
-------------------------------------------------------
The following lines are output of the make command:
................
        /bin/sh ../libtool --silent --mode=compile cc -DHAVE_CONFIG_H -I. -I. -I..  -DXML_BYTE_ORDER=21 -g -
c ./zend_execute.c
"./zend_execute.c", line 2375.1: 1506-162 (W) No definition was found for function zend_ptr_stack_get_arg.
Storage class changed to extern.
"./zend_execute.c", line 2375.1: 1506-162 (W) No definition was found for function zend_ptr_stack_clear_mult
iple.  Storage class changed to extern.
"./zend_execute.c", line 2375.1: 1506-162 (W) No definition was found for function zend_assign_to_variable_r
eference.  Storage class changed to extern.
"./zend_execute.c", line 2375.1: 1506-162 (W) No definition was found for function i_zend_is_true.  Storage
class changed to extern.
"./zend_execute.c", line 2375.1: 1506-162 (W) No definition was found for function safe_free_zval_ptr.  Stor
age class changed to extern.
        /bin/sh /usr/local/sources/php/php-4.0.0/libtool --silent --mode=link cc -g   -o php -export-dynamic
         stub.lo libphp4.la
...............
ld: 0711-317 ERROR: Undefined symbol: .safe_free_zval_ptr
ld: 0711-317 ERROR: Undefined symbol: .zend_assign_to_variable_reference
ld: 0711-317 ERROR: Undefined symbol: .i_zend_is_true
ld: 0711-317 ERROR: Undefined symbol: .zend_ptr_stack_clear_multiple
ld: 0711-317 ERROR: Undefined symbol: .zend_ptr_stack_get_arg
ld: 0711-317 ERROR: Undefined symbol: .is_numeric_string
make: 1254-004 The error code from the last command is 8.
---------------------------------------------
I had to undef HAVE_DLFCN, since ibm defines the function dlerror as dlfcn.h:extern char     *dlerror(void);
while php uses:
const char	*dlerror(void);
The compiler sees the difference as an error.
--------
The file stub.c has size 0.