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
<php_load_function_extension_cb>) 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
<php_load_function_extension_cb>) 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
<php_load_function_extension_cb>) 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...
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