Re: Linking and autoloading of dependent extensions

On 27 05 2014, at 14:32, Johannes Schlüter <johannes@schlueters.de> wrote: > On Tue, 2014-05-27 at 14:13 +0200, Michael Wallner wrote: >> I've prepared a tiny POC which enables linking and autoloading of >> dependent extensions: >> https://github.com/m6w6/php-src/compare/module_deps >> >> Anybody else other than me interested in this feature? > > This is a problem hurting me for a while and I'm happy you're looking > into it! I'm not sure about the solution here, though. This solution > assumes > > * the extension is inside extension_dir and > * a specific naming scheme on the extension's shared library file. > > Both assumptions might be wrong and might lead to loading the wrong file > when different ones are around. This will also lead to a misleading > error message ("PHP Warning: Module 'foo' already loaded in Unknown on > line 0") where the users just tries to load it once in wrong order. Thanks Johannes, as always you’ve got a bigger picture than I have! The warning should be easy to mitigate except for multiple extension INI entries; not sure if this is that important, though. The second problem is a bit harder, except for source distribution installations where EXTENSION_DIR should be fine and PECL installs where I could use INI’s extension_dir. For relocated extension_dirs like Linux dist packages, this might indeed be a problem. Thank you, Mike