after configureing php4b3 with:
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 ./configure --with-mysql=/usr/local/mysql --with-apache=../apache_1.3.9 --enable-track-vars
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when running make, i get the following errors and make quits:
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"zend_execute.c", line 1699: warning(1110): statement is unreachable
                                break;
                                ^

"zend_execute.h", line 49: error(1113): function "safe_free_zval_ptr" was
          referenced but not defined
  ZEND_API inline void safe_free_zval_ptr(zval *p);
                       ^

"zend_execute.h", line 51: error(1113): function "i_zend_is_true" was
          referenced but not defined
  ZEND_API inline int i_zend_is_true(zval *op);
                      ^

"zend_execute.h", line 53: error(1113): function
          "zend_assign_to_variable_reference" was referenced but not defined
  ZEND_API inline void zend_assign_to_variable_reference(znode *result, zval **variable_ptr_ptr, zval **value_ptr_ptr, temp_variable *Ts ELS_DC);
                       ^

"zend_execute.h", line 56: error(1113): function
          "zend_ptr_stack_clear_multiple" was referenced but not defined
  ZEND_API inline void zend_ptr_stack_clear_multiple(ELS_D);
                       ^

"zend_execute.h", line 57: error(1113): function "zend_ptr_stack_get_arg" was
          referenced but not defined
  ZEND_API inline int zend_ptr_stack_get_arg(int requested_arg, void **data ELS_DC);
                      ^

5 errors detected in the compilation of "zend_execute.c".
*** Error code 1 (bu21)
*** Error code 1 (bu21)
*** Error code 1 (bu21)
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