Linking an extension with a C++ library

nitefly

I need to build a PHP extension (on Linux) that links with an external library that has C++ functions.

I can build the extension and it will work. When I link with the .a file that contains the support functions I need, (and actually instantiate something) PHP can not load my .so.

I found a nice article on wrapping C++ methods for PHP, but nothing quite like this (even if I were to wrapper them, I still have the error). It seems like this must be a common problem with a simple solution. Can anybody help?

TIA

big_nerd

nitefly,

Do you have the source for the linked library?

Can you be entirely sure that it was compiled for use with your system?

Basically - have you tried to compile a standard linux application using your library?

Here is some information on static libraries, if you have the source, have you considered compiling it as a shared library?

http://www.dwheeler.com/program-library/Program-Library-HOWTO/x26.html

I havn't done much with PHP extensions, mainly I use it for items like math calculations that are better suited using C versus PHP, perhaps someone can answer if PHP needs to have a shared library?

I am only thinking this since PHP itself is invoked sevral times, and from what I know, all of the other PHP extensions are compiled as shared.

I hope this helps a bit... worst case scenario if you can post SOME code (obviously nothing proprietry) I can try to help.

nitefly

big:

Thanks, I did eventually get it it. I moved it from their generated makefile into our proprietary build system, started paring down what I didn't need, and also realized one of the link problems was a mangled name that I did not initially recognize.

Thanks,

nitefly