# Unable to load DSO's when using embed sapi module - Thread: https://externals.io/message/23626 - Original archive: https://news-web.php.net/php.internals/23626 - Started by Nabeel on 2006-05-24T09:58:54+00:00 - Messages: 2 - Reply by email to internals@lists.php.net - More for agents: search with https://externals.io/search.md?q={query} · JSON API at https://externals.io/api · documentation at https://externals.io/llms.txt --- ## #23626 — Nabeel — 2006-05-24T09:58:54+00:00 URL: https://externals.io/message/23626#23626 Hi, I want to call PHP code from C. So, I compiled sapi/embed module with my PHP 5.1.4 source (--enable-embed=static). It works fine when I access standard PHP functions. When any .so file (e.g.: axis2.so) is dynamically loaded to PHP, it gives the following error when I run my test C code. (this happens with other DSO's as well.) PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/ext/axis2.so' - /usr/local/lib/php/ext/axis2.so: undefined symbol: _zval_ptr_dtor in Unknown on line 0 axis2.so works fine thourgh cli and apache interfaces. I wonder whether I am missing something. Any help is greatly appreciated. Thanks, -Nabeel --- ## #23645 — Nabeel — 2006-05-25T10:47:12+00:00 URL: https://externals.io/message/23626#23645 Thanks for the guess. But when one of these parameters is wrong, PHP engine specifically says so. My configuratin options for php build are --with-apxs2=/usr/local/apache2/bin/apxs --enable-embed=static --with-zlib --enable-debug. I use phpize with the extension. So, this automatically makes the version, debug info, zts settings info of the extension exactly similar to those of PHP. I have listed the gdb trace for successful and unsuccessful cases. I'd appreciate if someone can point what the root cause for this issue. =========================================================================== When I run a php file through CLI the gdb trace I get is listed below. It successfully loads the axis2.so Breakpoint 1, php_ini_register_extensions () at /usr/app/php-5.1.4/main/php_ini.c:552 552 zend_llist_apply(&extension_lists.engine, php_load_zend_extension_cb TSRMLS_CC); (gdb) n 553 zend_llist_apply(&extension_lists.functions, php_load_function_extension_cb TSRMLS_CC); (gdb) s zend_llist_apply (l=0x837ab9c, func=0x820e5d1 ) at /usr/app/php-5.1.4/Zend/zend_llist.c:190 190 for (element=l->head; element; element=element->next) { (gdb) n 191 func(element->data TSRMLS_CC); (gdb) s php_load_function_extension_cb (arg=0x97a7650) at /usr/app/php-5.1.4/main/php_ini.c:232 232 zval *extension = (zval *) arg; (gdb) n 235 php_dl(extension, MODULE_PERSISTENT, &zval, 0 TSRMLS_CC); (gdb) p *extension $4 = {value = {lval = 159003284, dval = 1.7054524387922518e-313, str = {val = 0x97a3294 "axis2.so", len = 8}, ht = 0x97a3294, obj = {handle = 159003284, handlers = 0x8}}, refcount = 0, type = 6 '\006', is_ref = 243 ' (gdb) n 236 } (gdb) n zend_llist_apply (l=0x837ab9c, func=0x820e5d1 ) at /usr/app/php-5.1.4/Zend/zend_llist.c:190 190 for (element=l->head; element; element=element->next) { (gdb) 193 } (gdb) php_ini_register_extensions () at /usr/app/php-5.1.4/main/php_ini.c:555 555 zend_llist_destroy(&extension_lists.engine); (gdb) ================================================================================= When I use the embed sapi, it fails without being able to load axis2.so (please see the gdb trace below) Breakpoint 1, php_ini_register_extensions () at /usr/app/php-5.1.4/main/php_ini.c:552 552 zend_llist_apply(&extension_lists.engine, php_load_zend_extension_cb TSRMLS_CC); (gdb) n 553 zend_llist_apply(&extension_lists.functions, php_load_function_extension_cb TSRMLS_CC); (gdb) s zend_llist_apply (l=0x8344f5c, func=0x80d6f2d ) at /usr/app/php-5.1.4/Zend/zend_llist.c:190 190 for (element=l->head; element; element=element->next) { (gdb) n 191 func(element->data TSRMLS_CC); (gdb) s php_load_function_extension_cb (arg=0x920e580) at /usr/app/php-5.1.4/main/php_ini.c:232 232 zval *extension = (zval *) arg; (gdb) n 235 php_dl(extension, MODULE_PERSISTENT, &zval, 0 TSRMLS_CC); (gdb) p *extension $3 = {value = {lval = 153133716, dval = 1.7051624436017789e-313, str = {val = 0x920a294 "axis2.so", len = 8}, ht = 0x920a294, obj = {handle = 153133716, handlers = 0x8}}, refcount = 0, type = 6 '\006', is_ref = 61 '='} (gdb) s php_dl (file=0x920e580, type=1, return_value=0xbf943d74, start_now=0) at /usr/app/php-5.1.4/ext/standard/dl.c:113 113 if (type == MODULE_PERSISTENT) { (gdb) n 114 extension_dir = INI_STR("extension_dir"); (gdb) 119 if (type == MODULE_TEMPORARY) { (gdb) 122 error_type = E_CORE_WARNING; (gdb) 125 if (extension_dir && extension_dir[0]){ (gdb) 126 int extension_dir_len = strlen(extension_dir); (gdb) 128 libpath = emalloc(extension_dir_len+Z_STRLEN_P(file)+2); (gdb) 130 if (IS_SLASH(extension_dir[extension_dir_len-1])) { (gdb) 133 sprintf(libpath, "%s%c%s", extension_dir, DEFAULT_SLASH, Z_STRVAL_P(file)); /* SAFE */ (gdb) 125 if (extension_dir && extension_dir[0]){ (gdb) p libpath $4 = 0x923bd04 "/usr/local/lib/php/ext/axis2.so" (gdb) n 140 handle = DL_LOAD(libpath); (gdb) s 141 if (!handle) { (gdb) n 142 php_error_docref(NULL TSRMLS_CC, error_type, "Unable to load dynamic library '%s' - %s", libpath, GET_DL_ERROR()); thanks, -Nabeel Richard Lynch wrote: >Wild Guess: > >You maybe have different versions and/or different debug/zts settings >on the binaries, and need to re-compile the other files in parallel... > > > > > > […]