SWIG PHP build failure on Mac OSX

[Gabriel Petrovay]

See the zorba coders topic under: "Still SWIG problems..."

Linking CXX shared module libzorba_api.so
Undefined symbols:
 "_zval_is_true", referenced from:
     _wrap_swig_zorba_api_alter_newobject(int, _zval_struct*,
_zval_struct**, _zval_struct*, int)in zorba_apiPHP5_wrap.cxx.o
 "_zend_lookup_class", referenced from:
     SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*,
int)in zorba_apiPHP5_wrap.cxx.o
 "__object_init", referenced from:
     SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*,
int)in zorba_apiPHP5_wrap.cxx.o
    (maybe you meant: __object_init_ex)
 "__zend_hash_add_or_update", referenced from:
     SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*,
int)in zorba_apiPHP5_wrap.cxx.o
 "_php_strtolower", referenced from:
     SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*,
int)in zorba_apiPHP5_wrap.cxx.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [swig/php/libzorba_api.so] Error 1
make[1]: *** [swig/php/CMakeFiles/zorba_api.dir/all] Error 2
make: *** [all] Error 2

[Rodolfo Ochoa (rodolfo-ochoa)]

Please, elaborate, I can't reproduce this error...

[Gabriel Petrovay (gabipetrovay)]

This (still) is a problem on Mac OSX 10.6

Linking CXX shared module libzorba_api.so
Undefined symbols:
  "_zval_is_true", referenced from:
      _wrap_swig_zorba_api_alter_newobject(int, _zval_struct*, _zval_struct**, _zval_struct*, int)in zorba_apiPHP5_wrap.cxx.o
  "_zend_lookup_class", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
  "__object_init", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
     (maybe you meant: __object_init_ex)
  "__zend_hash_add_or_update", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
  "_php_strtolower", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [swig/php/libzorba_api.so] Error 1
make[1]: *** [swig/php/CMakeFiles/zorba_api.dir/all] Error 2
make: *** [all] Error 2

[Gabriel Petrovay (gabipetrovay)]

If this helps, CMake output relevant tot PHP is:

-- /usr/include/php/main
-- Found PHP5-Version 5.3.3

...

-- PHP Found and Active!
-- PHP Path:/Users/sausalito/builds/zorba/build/swig/php
-- PHP Extension Path: /Users/sausalito/builds/zorba/build/swig/php
-- Configuration file: /Users/sausalito/builds/zorba/build/doc/php/examples/php.ini
-- Simple configuration file: /Users/sausalito/builds/zorba/build/doc/php/examples/simple.php
-- Installing: /Users/sausalito/builds/zorba/build/doc/php/examples/simple.php

[Matthias Brantner (matthias-brantner)]

It seems like this guy had the same problem. There might be a hint how to solve it:

http://blog.liuzehua.com/post/5135443847/compiling-icephp-on-mac-os-x

[akaplan (akaplan)]

I've had the same error:
Undefined symbols:
  "_zval_is_true", referenced from:
      _wrap_swig_zorba_api_alter_newobject(int, _zval_struct*, _zval_struct**, _zval_struct*, int)in zorba_apiPHP5_wrap.cxx.o
  "_zend_lookup_class", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
  "__object_init", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
     (maybe you meant: __object_init_ex)
  "__zend_hash_add_or_update", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
  "_php_strtolower", referenced from:
      SWIG_ZTS_SetPointerZval(_zval_struct*, void*, swig_type_info*, int)in zorba_apiPHP5_wrap.cxx.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [swig/php/libzorba_api.so] Error 1

Here's the command-line:
/usr/bin/g++-4.2 -pipe -O2 -I/opt/local/var/macports/build/_Users_andre_MacPorts_textproc_zorba/zorba/work/zorba-2.0.2/build/../include -arch x86_64 -Wall -Wextra -Woverloaded-virtual -Wsign-promo -Winit-self -Wno-unused-parameter -fvisibility=hidden -fno-strict-aliasing -O3 -DNDEBUG -arch x86_64 -isysroot / -mmacosx-version-min=10.6 -bundle -Wl,-headerpad_max_install_names -L/opt/local/lib -arch x86_64 -o libzorba_api.so CMakeFiles/zorba_api.dir/zorba_apiPHP5_wrap.cxx.o ../../src/libzorba_simplestore.2.0.2.dylib -bundle -Wl,-headerpad_max_install_names -Wl,-flat_namespace,-U,_convert_to_boolean,-U,_gc_remove_zval_from_buffer,-U,_zend_throw_exception,-U,_zend_register_long_constant,-U,_zend_get_constant,-U,__zval_copy_ctor_func,-U,__convert_to_string,-U,__estrndup,-U,__efree,-U,__emalloc,-U,__estrdup,-U,__object_init_ex,-U,__zend_get_parameters_array_ex,-U,__zend_list_find,-U,__zval_copy_ctor,-U,_add_property_zval_ex,-U,_alloc_globals,-U,_compiler_globals,-U,_convert_to_double,-U,_convert_to_long,-U,_zend_error,-U,_zend_hash_find,-U,_zend_register_internal_class_ex,-U,_zend_register_list_destructors_ex,-U,_zend_register_resource,-U,_zend_rsrc_list_get_rsrc_type,-U,_zend_wrong_param_count,-U,_zval_used_for_init -lpthread /opt/local/lib/libicuuc.dylib /opt/local/lib/libicui18n.dylib /opt/local/lib/libicudata.dylib /opt/local/lib/libxml2.dylib /opt/local/lib/libxslt.dylib /opt/local/lib/libxerces-c.dylib /opt/local/lib/libxml2.dylib /opt/local/lib/libxslt.dylib /opt/local/lib/libxerces-c.dylib

By adding all undefined symbols to the -Wl,-flat_namespace,-U,_convert_to_boolean,-U,... switch, it compiled fine.
The undefined symbols as reported are:
_zval_is_true
_zend_lookup_class
__object_init
__zend_hash_add_or_update
_php_strtolower

 So the command with -Wl,-flat_namespace,-U,_convert_to_boolean,-U,...,-U,_zval_is_true,-U,_zend_lookup_class,-U,__object_init,-U,__zend_hash_add_or_update,-U,_php_strtolower
compiled fine

The list of undefined symbols is in cmake_modules/FindPHP5.cmake, so the fix would be to update this file.

Also the output name of the zorba extension should be consistent with the content of zorba_api_wrapper.php:
- zorba_api_wrapper.php tries to load zorba_api.so
- the extension file is libzorb...

[William Candillon (wcandillon)]

Hello,

Indeed this fix the bug.
Please find the patch enclosed.