How to enable debug for my extension?

Mangol Smith wrote:

I'm trying to debug my extension.It says that PHP is built with debug flag,
but my not my extenison. I used --enable-debug for PHP build. But, in the
extension I wrote I can't find any configure option associated with debug in
./configure --help. I tried using the options --enable-debug and
--with-debug options, but no result. PHP is giving a startup error while
loading my extension.

the information whether to build a debug extension or not
is fetched from the PHP installation you're building
against, specifically from the ZEND_DEBUG definition in

$prefix/include/php/main/php_config.h

Looks like you are compiling against a PHP installation
that was compiled without debug enabled and then deploying
on a system or installation that has debug features built
in.

If you have several PHP installation with different
install prefixes installed on your system you need to
specify which to use to build your extension against with

./configure --with-php-config=$PATH_TO/php-config

You can check whether you have the right php-config by
calling

$PATH_TO/php-config --extension-dir

This will give you

$prefix/lib/php/extensions/no-debug-non-zts-20071006

fror a non-debug build and

$prefix/lib/php/extensions/debug-non-zts-20071006

for a debug one.

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