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Posted: Mon Apr 16, 2007 4:24 am

Hi

Just building a new dev server and can't seem to get dbg working, which seems odd as it is normally so simple.

I'm wondering if it is because I'm running PHP 5.2.1 and the .so I'm using is the 5.2.x one bundled with PHPEd 4.6.3.

For example:

grendel:/usr/lib/php/20060613-zts# php -v
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20060613-zts/dbg.so' - /usr/lib/php/20060613-zts/dbg.so: undefined symbol: compiler_globals in Unknown on line 0
PHP 5.2.1 (cli) (built: Apr 16 2007 17:46:47)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2007 Zend Technologies

FWIW here's my PHP compile lines

./configure --with-layout=GNU --with-pear=/usr/share/php --enable-track-vars \
–enable-force-cgi-redirect –with-openssl=shared,/usr –with-zlib \
–with-exec-dir=/usr/lib/php/libexec –prefix=/usr –with-apxs2=/usr/bin/apxs2 \
–with-regex=php –with-config-file-path=/etc/php –with-curl=shared,/usr \
–with-gd –with-zlib-dir=/usr –with-jpeg-dir=shared,/usr \
–with-png-dir=shared,/usr –with-mysql=/usr –with-mysql-sock=/tmp/mysql.sock

Posted: Wed Apr 25, 2007 4:16 pm

--enable-track-vars
removing this will solve your problem.

Posted: Mon Jan 14, 2008 5:36 pm

I seem to be suffering from this also. Originally --enable-track-vars was in the configure so I recompiled without that but it still refuses to load with the same error. Here's the ./configure from phpinfo:-

Code:

'./configure' '--prefix=/opt/php' '--sysconfdir=/etc/php' '--with-config-file-path=/etc/php' '--disable-debug' '--enable-pic' '--disable-rpath' '--enable-inline-optimization' '--with-bz2' '--with-db4' '--with-curl' '--with-dom' '--with-exec-dir=/usr/local/bin' '--with-freetype-dir' '--with-png-dir' '--with-gd' '--enable-gd-native-ttf' '--with-ttf' '--with-gdbm' '--with-gettext' '--with-ncurses' '--with-gmp' '--with-iconv' '--with-jpeg-dir' '--with-openssl' '--with-png' '--with-pspell' '--with-regex=system' '--with-xml' '--with-expat-dir' '--with-pcre' '--with-zlib' '--with-layout=GNU' '--enable-bcmath' '--enable-exif' '--enable-ftp' '--enable-magic-quotes' '--enable-safe-mode' '--enable-sockets' '--enable-sysvsem' '--enable-sysvshm' '--enable-discard-path' '--enable-yp' '--enable-wddx' '--enable-mbstring' '--enable-mbstr-enc-trans' '--enable-mbregex' '--without-oci8' '--with-pear' '--with-kerberos' '--with-ldap' '--with-mysql' '--enable-memory-limit' '--enable-bcmath' '--enable-shmop' '--enable-calendar' '--enable-dbx' '--enable-dio' '--enable-mcal' '--with-apxs2=/opt/httpd/bin/apxs' '--with-imap-ssl' '--with-mcrypt' '--with-xsl' '--with-mysqli=/usr/bin/mysql_config'

We're running on a Linux 64 bit platform and we made sure we were using the x86_64 version of the module. Any ideas? tia.
(edit: we're using php5.2.5 :-

Code:

Server API Apache 2.0 Handler
Virtual Directory Support enabled
Configuration File (php.ini) Path /etc/php
Loaded Configuration File /etc/php/php.ini
PHP API 20041225
PHP Extension 20060613
Zend Extension 220060519
Debug Build no
Thread Safety enabled
Zend Memory Manager enabled
IPv6 Support enabled
Registered PHP Streams php, file, data, http, ftp, compress.bzip2, compress.zlib, https, ftps
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
Registered Stream Filters string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, convert.iconv.*, bzip2.*, zlib.*

Posted: Mon Jan 14, 2008 6:43 pm

Solved by recompiling Apache to be non-worker and php without thread safety.

Posted: Thu Jan 17, 2008 12:48 pm

"thead safety" is an experimental thing in PHP and it's not recommended to use it because many php extensions even included in the PHP source tree are not thradsafe by their design.
Certainly, Apache should be compiled in PreFork more and php threadsafety should be turned off.

On the other hand, if you have a lot of plain html/jpg/gif/css/js files on your server, you may get some performance boost if you run Apache in worker mode and php through a fastcgi apache module (still with php threadsafety turned off).